Spinel Birthstone

 

Spinel was one of the most famous "impostors" in the gem world, often mistaken for ruby or sapphire due to its brilliant colors and exceptional clarity. 

Here we begin following;

 

What Birthstone Is Spinel?

Spinel is recognized as a modern birthstone for August. It shares this designation with peridot and sardonyx.

 

Here's a bit more detail on its status:

 

Official Recognition: In 2016, the American Gem Trade Association (AGTA) and the Jewelers of America officially added spinel as a second, modern birthstone for August. This was a significant move, as it was the first time the list had been updated since 1952.

 

Historical Connection: Even before its official designation, spinel has a long historical connection to August. For centuries, many famous "rubies" in crown jewels around the world were actually red spinels. This misidentification, due to their similar color and occurrence in the same mines, gives spinel a royal and ancient pedigree.

 

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Why Is Spinel A Great Birthstone?

Durability: With a hardness of 8 on the Mohs scale, it is durable and perfect for everyday wear in jewelry like rings and bracelets.

 

Variety of Colors: While often associated with vibrant reds and hot pinks, spinel comes in a stunning range of colors, including lavender, blue, violet, and even black. This gives August babies many beautiful options.

 

Brilliance: Spinel has excellent brilliance and clarity, often requiring no heat treatment to enhance its natural beauty.

 

So, in summary: Yes, spinel is absolutely a birthstone for August, and it's a beautiful, durable, and historically rich gemstone for anyone born in that month.

 

Learn more about spinel's geological properties on Wikipedia's spinel page.

 

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How Can You Tell If A Spinel Is Real?

Excellent question. Given that spinel was historically mistaken for other gems like ruby and sapphire, it's fitting that we now need to know how to identify it!

 

The good news is that for a beginner, there are some simple observations you can make, but for a definitive answer, professional gemological testing is usually required.

 

Here’s a breakdown of how to tell if a spinel is real, from simple checks to scientific methods.

 

Simple At-Home Observations (Clues, Not Proof)

These can raise red flags for fakes like glass, but cannot conclusively identify a natural spinel.

 

Look for Bubbles: Imitations like glass will often have tiny gas bubbles or swirl marks visible under a 10x loupe. Natural spinel, being a crystalline gem, will not have bubbles. It may have natural inclusions like crystals, fingerprints, or tiny fractures, but never bubbles.

 

Check the Hardness: Spinel is very hard (8 on the Mohs scale). It should not be easily scratched by a steel file (hardness ~6.5). Warning: This is a destructive test and should only be done as a last resort on an unset stone and in an inconspicuous area. It's not recommended.

 

The "Sparkle" Test (Dispersion): Spinel has a nice brilliance, but its "fire" (the separation of light into spectral colors) is lower than that of diamond. If a stone is being sold as spinel but has rainbow-colored flashes as strong as a diamond's, it's likely a fake like cubic zirconia (CZ).

 

Professional Gemological Testing (Definitive Proof)

This is how gemologists and labs definitively identify spinel. The most common imitations or look-alikes are synthetic spinel and glass, which require these tools to detect.

 

Refractometer (Measuring Refractive Index - RI):

 

Every gem has a specific RI, which is how much it bends light.

 

Natural Spinel's RI: Typically around 1.718.

 

Glass Imitations: Usually have a lower RI (1.50 - 1.70).

 

Synthetic Spinel: Often has a slightly higher RI than natural spinel. This is a key indicator.

 

Polariscope:

 

This tool tests a gem's optical character.

 

Spinel is Isotropic: This means it is singly refractive. When rotated under a polariscope, it will remain dark or stay the same.

 

Common Look-alikes are Anisotropic: Corundum (ruby/sapphire) is doubly refractive and will appear to lighten and darken when rotated. This is one of the easiest ways to tell a red spinel from a ruby.

 

Spectroscope:

 

This instrument analyzes the light spectrum absorbed by a gem, revealing a unique "fingerprint."

 

Spinel's Spectrum: Red and pink spinels show a distinct pattern of bright fluorescent lines, most notably in the red region. Blue spinels show complex bands of absorption. This is a very reliable test.

 

Checking for Inclusions:

 

Under a microscope, gemologists look for natural inclusions that confirm a stone's identity.

 

Natural Spinel Inclusions: Often contain small, octahedral crystals, "fingerprint" inclusions, or zoning.

 

Synthetic Spinel Inclusions: Often have curved striae (growth lines) and are often too clean.

 

Common Fakes & How to Spot Them

 

The Single Best Way to Know for Sure

Get a certificate from a reputable gemological laboratory.

 

If you are making a significant purchase, the safest and most reliable method is to have the stone graded and certified by a lab like:

 

GIA (Gemological Institute of America)

 

AGL (American Gemological Laboratories)

 

Gübelin Gem Lab

 

SSEF (Swiss Gemmological Institute)

 

A lab report will definitely state the gem species as "Spinel," its origin (e.g., Myanmar, Vietnam), and note if it is natural or synthetic.

 

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How Rare Is Spinel?

That's the key question, and the answer is fascinating because spinel's rarity is a paradox:

 

As a mineral, spinel is relatively common. But as a fine gemstone, it is exceptionally rare.

 

Think of it like this: finding a spinel crystal in the earth is not unusual, but finding one that is large, clean, and has a vibrant, desirable color is a true treasure.

 

Here’s a breakdown of its rarity:

 

1. Gem-Quality vs. Mineral Specimens

Common: Small, included, or poorly colored spinel crystals are found in many locations around the world. These are not suitable for cutting into faceted gems for jewelry and have little commercial value.

 

Rare: Transparent crystals with intense color and good clarity that can be cut into beautiful gems are much, much rarer.

 

2. The Rarity of Specific Colors

This is where spinel's rarity truly shines. The most sought-after colors are incredibly scarce:

Which Color Spinel Is Best

Vivid Red ("Jedi" Spinel): This is the "holy grail." A pure, neon-bright red with no secondary brown or purple tones is one of the rarest finds in the gem world, especially from the legendary mines in Myanmar (Burma).

 

Cobalt Blue: The stunning, saturated blue caused by cobalt (primarily from Vietnam and Tanzania) is also extremely rare. A fine, vivid blue spinel over 2-3 carats is a major collector's item.

 

Vivid Hot Pink: Intense, electric pink stones are highly prized and very rare.

 

3. The Rarity of Size

While small spinels (under 1-2 carats) in nice colors can be found, large, fine-quality spinels are extraordinarily rare.

 

Finding a 5-carat spinel with top color and clarity is a significant event.

 

Historical spinels like the 170-carat "Black Prince's Ruby" in the British Crown Jewels are legendary precisely because such sizes with good color are almost unheard of today.

 

4. The "Natural" Rarity

Unlike many other gemstones, spinel is rarely heat-treated or enhanced. This is a critical point:

 

~98% of Sapphires and a large percentage of rubies and tanzanite are heat-treated to improve their color and clarity.

 

~99.9% of Spinels are sold exactly as they came out of the ground.

 

This means when you buy a beautiful spinel, you are almost always buying a gem in its pure, natural state. The rarity of a beautiful, untreated gemstone is, in itself, a rare thing in the modern market.

 

Comparison to Other Gemstones

vs. Ruby/Sapphire: Fine, unheated ruby and sapphire are rarer and more expensive than fine spinel. However, you can find beautiful spinels that rival the color of these gems for a fraction of the price, making spinel an exceptional value.

 

vs. Diamond: Gem-quality diamond is much more common in the market than gem-quality spinel. The diamond supply is tightly controlled, creating an illusion of rarity, while the spinel supply is genuinely fragmented and limited for top-quality material.

 

Spinel is not a rare mineral, but a fine gem spinel is very rare.

 

Its rarity is defined by a perfect storm of factors: the right color, the right clarity, and the right size, all in a naturally occurring, untreated package. This combination is what makes the finest spinels some of the most coveted and passionate pursuits for gem collectors and connoisseurs.

 

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Which Color Spinel Is Best?

That's the million-dollar question! The "best" color in spinel is highly subjective and depends on what you value most—rarity, value, or personal taste. However, from a gemological and market perspective, there is a clear hierarchy.

 

Here’s a breakdown of the most prized spinel colors, from the ultimate collector's choice to other stunning options.

 

The Ultimate "Best": Vivid Red (The "Jedi" Spinel)

Why it's top-tier:

 

Rarity: This is the most legendary and rarest color. A pure, intense, neon-red with no secondary brown or purple tones is the holy grail for collectors.

 

The "Jedi" Name: A trade term for the finest red spinels from Myanmar, named for their "force-of-nature" vivid red, supposedly with no "dark side" (no dark tones).

 

Historical Significance: This is the color that was mistaken for ruby in the crown jewels for centuries. It carries a royal pedigree.

 

Price: Commands the highest prices per carat, often tens of thousands of dollars for top-quality stones.

 

If you want the absolute best in terms of rarity and prestige, a vivid "Jedi" red spinel is it.

 

The Other Top Contenders

These colors are also exceptionally rare and valuable, sometimes rivaling reds.

 

1. Vivid Cobalt Blue

Why it's prized: The stunning, saturated blue is caused by cobalt, the same element that gives some sapphires their famous color. This is extremely rare, especially from sources like Vietnam and Tanzania.

 

Appeal: It's a brilliant, electric blue that is very distinctive and highly sought-after by connoisseurs.

 

2. Vivid Hot Pink

Why it's prized: An intense, almost fluorescent pink is incredibly eye-catching. The most famous source for this color is the Mahenge mine in Tanzania, which produces stones with an unforgettable neon glow.

 

Appeal: It offers a modern, vibrant alternative to pink sapphires, often with more brilliance and a brighter tone.

 

3. Flaming Red-Pink or Pinkish-Red (The "Flamingo" Pink)

Why it's prized: This color sits in a beautiful zone between pure red and pure pink. It's less orange than a ruby but has a fiery, saturated warmth that is incredibly desirable.

 

Appeal: It captures the best of both red and pink, offering a unique and passionate color.

 

A Guide to Choosing Your "Best" Spinel

Since "best" is personal, here’s how to decide:

 

For the Collector & Investor: Seek a Vivid Red "Jedi" or a Vivid Cobalt Blue. These are the ones that will hold and increase in value the most due to their extreme rarity.

 

For Someone Who Loves Vibrant, Modern Gems: A Vivid Hot Pink from Mahenge or a Flamingo Pink offers incredible brilliance and a contemporary look that is hard to match.

 

For the Best Value & Beauty: Don't overlook other beautiful colors! Lavender, soft pink, and violet spinels can be absolutely stunning and are much more affordable, offering incredible beauty for the price. They are perfect for jewelry.

 

For a Unique, Earthly Tone: Greyish-blue spinels have a sophisticated, subtle beauty that is very trendy in modern jewelry design.

 

Summary Table of Spinel Colors

 

There is no single "best" color, but the uncontested champion for rarity and prestige is the vivid red "Jedi" spinel. However, the "best" spinel for you is the one whose color captivates you the most. The great thing about spinel is that in any of these colors, you are getting a durable, brilliant, and almost always untreated gemstone.

 

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How Much Does Spinel Cost?

The cost of spinel has a wider range than almost any other gemstone, so it's a great question. To give you a practical answer, let's break it down by quality and color.

 

The price of spinel is primarily determined by Color, Carat Weight, and Clarity.

 

Here is a general price guide per carat for faceted, natural spinels (prices are in USD and can fluctuate).

 

Spinel Price Ranges (Per Carat)

1. Commercial Grade: $50 - $300 per carat

What you get: These are the most common spinels. They are typically pale, muted, or have grayish/brownish undertones. Colors include light lavender, dusty pink, and grayish-blue.

 

Best for: Affordable, colorful jewelry where top-tier color isn't the priority.

 

2. Good Quality: $300 - $1,500 per carat

What you get: This is the sweet spot for many jewelry lovers. You'll find nice, noticeable color here—clean stones with pretty pinks, vibrant purples, and decent reds or blues that just aren't the "top" saturation.

 

Best for: Beautiful, eye-catching jewelry that offers excellent value for a high-quality, natural gem.

 

3. Fine Quality: $1,500 - $5,000+ per carat

What you get: This tier is for exceptional color. Think vivid hot pinks, strong cobalt blues, and rich reds. The stones will be eye-clean and well-cut to maximize their brilliance.

 

Best for: The discerning buyer or collector seeking a gem with investment potential and stunning beauty.

 

4. Exceptional / Collector Quality: $5,000 - $30,000+ per carat

What you get: This is for the absolute rarest of the rare.

 

Vivid "Jedi" Red (no secondary tones)

 

Intense Cobalt Blue from Vietnam

 

Large sizes (over 3-5 carats) with the above colors.

 

Best for: Serious collectors and investors. These gems are comparable in price to fine sapphires and rubies.

 

Cost by Color (General Guide)

Red Spinel: The most expensive. Starts around $800-$1,000/ct for decent color and can soar to $30,000/ct for the finest "Jedi" reds over 2 carats.

 

Cobalt Blue Spinel: Extremely rare and valuable. Expect to pay $2,000 - $10,000/ct for good to fine quality.

 

Hot Pink Spinel (e.g., from Mahenge): Highly sought-after. Prices range from $1,000 - $7,000/ct for vibrant stones.

 

Violet/Purple Spinel: More affordable. Can range from $200 - $1,500/ct depending on saturation.

 

Lavender & Pastel Spinel: The most affordable colors. Typically $50 - $500/ct.

 

Real-World Examples:

A 1-carat, good-quality pink spinel for a ring: might cost $500 - $900.

 

A 2-carat, fine-quality violet spinel for a pendant might cost $2,500 - $4,000.

 

A 3-carat, exceptional cobalt blue spinel for an investment piece: could easily cost $25,000 - $60,000+.

 

Why Such a Wide Range? The Value Proposition

Remember, spinel is rarely treated. This is a massive advantage. When you buy a spinel in the $300 - $1,500/ct range, you are often getting a gem with a natural color that would cost 3-5 times more if it were a ruby or sapphire.

 

You can spend a little on a pretty spinel or a fortune on a rare masterpiece. This makes spinel an exciting gemstone, as it offers both incredible beauty for the budget-conscious and supreme rarity for the collector. Always buy from a reputable dealer and ask if the stone has a lab report for important purchases.

 

For current gemstone market prices, visit the American Gem Society's price guide.

 

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Which Is Better, Spinel Or Sapphire?

This is a classic question in the gem world, and the answer isn't straightforward because "better" depends entirely on what you're looking for. There is no outright winner; each gem has its own crown.

 

Think of it like comparing a sports car (spinel) to a luxury sedan (sapphire). Both are excellent, but they serve slightly different purposes and appeal to different tastes.

 

Here’s a detailed comparison to help you decide which is "better" for you.

 

Head-to-Head Comparison

 

When to Choose Spinel:

You value a natural, untreated gem. This is spinel's biggest advantage.

 

You love vibrant, electric colors. The best spinels have a neon-like glow that is hard to match.

 

You want the look of a ruby or sapphire for a better price. A fine red spinel can rival a ruby, and a cobalt blue spinel can mimic a sapphire, often at a fraction of the cost.

 

You appreciate something unique. Spinel is a gem for those who know and love stones, making it a conversation piece.

 

When to Choose Sapphire:

You need maximum durability for an heirloom piece. While spinel is very durable, sapphire's hardness of 9 is the practical pinnacle.

 

You are drawn by tradition and symbolism. Sapphires are associated with royalty, wisdom, and romance (think Princess Diana's ring).

 

You want a specific, classic color. The iconic cornflower blue sapphire is a timeless choice.

 

Resale value and brand recognition are important. Sapphire is a universally recognized precious gemstone.

 

The Bottom Line:

Choose Spinel if... You are a purist who prizes a completely natural gem, you are captivated by intense color, and you are looking for exceptional value and uniqueness.

 

Choose Sapphire if... You desire the ultimate in durability for daily wear, you are inspired by centuries of tradition and fame, and you are willing to pay a premium for a recognized "precious" gemstone.

 

In short, for the gem connoisseur and value-seeker, Spinel is often the more exciting choice. For the traditionalist seeking a proven heirloom, Sapphire is the timeless champion.

 

You truly cannot go wrong with either. The "better" gem is the one that speaks to you personally.

 

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Can Spinel Get Wet?

Yes, spinel can get wet. It is perfectly safe for spinel to come into contact with water.

 

However, there are a few important nuances to consider, especially regarding the jewelry setting and how it gets wet.

 

Why Spinel is Safe in Water

Excellent Durability: Spinel is very hard (8 on the Mohs scale), making it resistant to scratches from everyday wear and tear. Water won't damage the gem itself.

 

Chemical Stability: Spinel is not affected by water, mild soaps, or most common chemicals. It won't dissolve, etch, or become cloudy from water exposure.

 

When to Be Cautious (It's About the Setting)

The risk isn't the spinel itself, but the metal of the jewelry setting and how the activity might physically impact the piece.

 

 

Quick Guide: Can I Get My Spinel Jewelry Wet?

✅ Okay: Handwashing, rain, accidental splashes.

 

⚠️ Be Cautious: Showering (can cause buildup, dulling sparkle).

 

Avoid: Swimming pools, hot tubs, ocean swimming, and applying lotions or perfumes while wearing it.

 

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What Zodiac Is Spinel?

Spinel's connection to the zodiac isn't as direct as it is to birthstones, but we can make a clear connection based on its birthstone status.

 

Spinel is most strongly associated with the zodiac signs of Leo and Virgo.

 

Here's why:

 

As the modern August birthstone, spinel's primary astrological connection is with the two zodiac signs that rule most of August:

 

Leo (July 23 - August 22): Leos are known for their fiery, passionate, and regal nature. The vibrant red and hot pink spinels perfectly match Leo's dramatic and powerful energy.

 

Virgo (August 23 - September 22): Virgos are associated with purity, practicality, and wisdom. The cleaner, more subdued shades of spinel, like soft lavender or blue, can resonate with Virgo's analytical and calm demeanor.

 

Spinel's Energetic Properties and the Zodiac

Beyond the birth month link, spinel is known in metaphysical circles for certain properties that can benefit various signs:

 

Revitalization and Energy: Spinel is often called the "stone of immortality" for its ability to revitalize and renew energy. This can be beneficial for signs that experience burnout or need a boost of motivation.

 

Passion and Joy: The red varieties are linked to passion, vitality, and joy, which can complement fire signs like Leo, Aries, and Sagittarius.

 

Calm and Clarity: The blue and lavender varieties are associated with peace, clarity, and emotional balance, which can be supportive for water signs like Pisces, Cancer, and Scorpio, or to help ground air signs like Gemini and Libra.

 

While any zodiac sign can wear and appreciate spinel, it has a direct astrological link to Leos and Virgos due to its status as the primary modern birthstone for August.

 

If you're choosing a spinel based on your zodiac sign, you might also select a color that aligns with your sign's element (e.g., a fiery red for a Leo or a calming blue for a Pisces). Ultimately, the "best" spinel is the one you're most drawn to.

 

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Why Is Spinel So Popular?

Spinel's rise in popularity is a fascinating story in the gem world, and it's not due to a single factor, but a perfect storm of several key reasons.

 

Once a gem known mainly to collectors and connoisseurs, spinel is now a sought-after star. Here’s why:

 

1. The "Purity" and "No Treatment" Appeal

This is arguably the biggest factor for modern buyers. In an era where consumers are more knowledgeable, spinel’s greatest selling point is that it is rarely treated or enhanced.

 

Comparison: ~98% of sapphires and a vast majority of rubies are heat-treated to improve their color and clarity. With spinel, what you see is its natural, authentic beauty. This authenticity is incredibly appealing.

 

2. Exceptional Color Range and Vibrancy

Spinel comes in a stunning array of colors, but it's not just the variety—it's the quality of the color.

 

"Neon" Hues: Spinel is famous for its intensely saturated, almost electric colors. The "Jedi" reds from Myanmar and the vivid hot pinks from Tanzania (Mahenge) have a glow that is very rare in other gemstones.

 

Cobalt Blue: The vibrant blue spinels from Vietnam and Tanzania rival the finest sapphires in color, without the need for heat treatment.

 

3. Brilliance and Durability

Hardness: With a hardness of 8 on the Mohs scale, it is extremely durable for everyday wear in rings, earrings, and pendants.

 

Sparkle: It has a high refractive index, giving it excellent brilliance and fire. A well-cut spinel is exceptionally lively and bright.

 

4. Rarity and Exclusivity

While common in lower grades, fine-quality spinel in large sizes is genuinely rare. As consumers look for unique alternatives to the "big three" (diamond, ruby, sapphire), spinel offers a sense of individuality and exclusivity. Owning a beautiful spinel feels like being "in the know."

 

5. The "Great Imposter" History Adds Romance

The fact that some of the world's most famous "rubies" in crown jewels (like the Black Prince's Ruby) are actually spinels adds a layer of royal intrigue and romance to the gem. This fascinating history makes it a great conversation piece and connects it to a rich, if misunderstood, past.

 

6. Official Recognition as a Birthstone

In 2016, the Jewelers of America officially added spinel as a modern birthstone for August, alongside peridot and sardonyx. This was a massive boost to its public profile and commercial availability, introducing it to millions of new customers.

 

7. A Shift in Consumer Mindset

Modern gem buyers are often:

 

More educated and seek out unique stones.

 

Value-conscious, and spinel offers the look of a ruby or sapphire for a more accessible price point (at the non-top-tier level).

 

Drawn to a story, and Spinel has a compelling one.

 

Spinel's popularity is a classic case of a "hidden gem" being discovered. It combines the modern desire for authenticity and unique beauty with the timeless qualities of durability, brilliance, and a royal pedigree. It’s no longer just an alternative; it’s a first-choice gem in its own right.

 

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Is Spinel Good For Everyday Wear?

Yes, spinel is an excellent choice for everyday wear.

 

It's one of the most durable and practical colored gemstones you can choose for a piece of jewelry, like an engagement ring or a daily-worn pendant. Here’s a breakdown of why it's so well-suited for this purpose.

 

The Case FOR Everyday Wear

Exceptional Hardness: Spinel scores 8 on the Mohs scale of mineral hardness. This makes it very resistant to scratching from everyday hazards like dust (which is around 7-7.5 on the scale). For context:

 

Diamond: 10

 

Sapphire/Ruby: 9

 

Spinel: 8

 

Emerald: 7.5-8

 

Quartz (Dust): 7

 

High Toughness: Unlike gems like emerald that are inherently brittle and can chip easily, spinel has good toughness. This means it can better withstand accidental bumps and knocks without cracking or chipping.

 

Excellent Stability: Spinel is not affected by light, heat, or common chemicals. It won't fade over time, and it's safe to clean with standard jewelry cleaning methods (warm water, mild soap, ultrasonic cleaners).

 

Important Considerations for Daily Wear

While the gem itself is perfectly suited, the longevity of any everyday jewelry also depends on the setting and your lifestyle.

 

The Setting is Key: For a ring worn every day, a protective setting is highly recommended. A bezel setting or a setting with strong, sturdy prongs (like six-prong for a round stone) will protect the spinel from hard impacts from the side.

 

Your Activities: If you have a very active lifestyle (e.g., working with your hands, heavy manual labor), it's always wise to remove any fine jewelry, including spinel, to avoid sharp, direct blows.

 

Maintenance: Like all jewelry, spinel will accumulate dirt, oils, and lotions over time, dulling its sparkle. Regular gentle cleaning will keep it looking its best.

 

Comparison to Other Popular Gemstones

vs. Sapphire (9): Sapphire is slightly harder and marginally more scratch-resistant, but for all practical purposes, spinel's hardness of 8 is more than sufficient for a lifetime of wear.

 

vs. Emerald (7.5-8): Spinel is generally a much better choice for everyday wear. Emerald is more brittle and often has inclusions that make it prone to chipping.

 

vs. Tanzanite (6.5-7): Spinel is a far superior choice for daily wear. Tanzanite is much softer and can be easily scratched.

 

Spinel is a fantastic, durable, and worry-free gem for everyday wear. Its combination of hardness, toughness, and stability makes it a top-tier choice for engagement rings and other frequently worn jewelry.

 

Just remember: No matter how hard the gemstone, the single most important factor for longevity is the security of the setting. Have a jeweler check the prongs and setting every year or so to ensure everything is secure.

 

So, if you love the vibrant colors of spinel, you can confidently choose it for a piece you plan to wear every day.