Is spinel a fake ruby?

No, spinel is a completely different and genuinely natural gemstone, not a fake ruby. Due to limited gemological knowledge in earlier eras it was often mistaken for ruby, but modern science recognizes them as two entirely distinct minerals.

Is spinel cheaper than ruby?

Usually yes — spinel is more affordable than ruby of comparable quality, though rare, high-quality spinel can still command a significant price. The exact price depends on quality, size, and origin.

Is spinel as durable as ruby?

Spinel's hardness (8 on the Mohs scale) is slightly lower than ruby's (9), but spinel is still considered durable enough for everyday wear. Both are scratch-resistant and long-lasting gemstones.

What is spinel's place in traditional astrology?

Ruby is an established navratna gemstone associated with the Sun in Vedic astrology. Spinel has no classical astrological status — some modern practitioners associate it loosely with Mars, but this isn't established in classical texts.

Which one should I choose between the two?

If you need a 'ruby' specifically on astrological advice, a certified natural ruby is the right choice — spinel isn't considered a substitute for it. But if you're simply looking for a beautiful, durable, and relatively affordable deep red gemstone, spinel is an excellent option.

Can the two be told apart without a lab test?

Telling ruby and spinel apart with the naked eye is nearly impossible, which is exactly why they were confused with each other for centuries in history. A lab test checking refractive index and other properties is the only reliable way to identify them precisely.

Ruby vs Red Spinel: The Difference, Identification and Which One to Buy

Quick Answer

Ruby belongs to the corundum family (hardness 9), while spinel comes from an entirely different mineral family (hardness 8) — both get their red colour from chromium, so they look nearly identical. Historically, several famous “rubies” (like the British Crown Jewels’ “Timur Ruby”) were later found to actually be spinels. Astrologically, ruby is the established navratna gemstone; spinel has no classical status.

Introduction

Ruby and spinel are both deep, vivid red gemstones, and both owe their colour to the same element — chromium. This very similarity fooled jewellers and royal courts alike for centuries. Today, modern gemology can easily tell the two apart, but it’s important to understand this difference while buying — especially since there’s a clear distinction between the two in price, availability, and astrological status.

The Difference in Chemical Composition and Hardness

Ruby belongs to the corundum (aluminium oxide) family, with a hardness of 9 on the Mohs scale — one of the hardest natural minerals after diamond. Spinel is made of magnesium aluminium oxide, with a hardness of 8 — also quite durable, though slightly softer than ruby.

A Story of Historical Confusion

Before modern gemological science, ruby and spinel were often taken to be the same gemstone, because both come from similar mines (such as Myanmar’s Mogok Valley) and are nearly indistinguishable in colour. The famous “Black Prince’s Ruby” and “Timur Ruby” set in the British Crown Jewels were both believed to be rubies for centuries — but modern examination found they are actually spinels.

Origin and Availability

Both gemstones are often found in the same geographic regions — especially Myanmar (Mogok Valley), which produces premium ruby and spinel alike. Other major spinel sources include Tajikistan, Sri Lanka, and Vietnam. Ruby is also mined in large quantities from Mozambique and Thailand.

The Difference in Astrological Significance

In Vedic astrology, ruby is an established navratna gemstone associated with the Sun, with centuries of classical backing. Spinel has no classical astrological status — it’s a purely modern, non-traditional gemstone that some people choose simply for its beauty and affordable price, not for astrological purposes.

Quick Facts

Feature	Ruby	Spinel
Mineral family	Corundum	Spinel group
Hardness (Mohs)	9	8
Source of colour	Chromium	Chromium/Iron
Astrological status	Established navratna (Sun)	No classical status
Typical price level	Higher	Relatively affordable
Main sources	Myanmar, Mozambique, Thailand	Myanmar, Tajikistan, Sri Lanka

Expert Tip: If you’re buying “ruby” on astrological advice, the certificate should clearly state the gemstone’s species as “Corundum (Ruby)” — never accept a certificate with a vague description like “red gemstone.”

Buying Advice

If your purpose is astrological, buy a certified natural ruby — spinel isn’t considered a substitute, no matter how similar the colour looks. If your purpose is purely jewellery and beauty, spinel is an excellent, durable, and relatively affordable option. In either case, always confirm the species on the certificate.

Key Takeaways

Both get their red colour from chromium, so they look nearly identical.
Ruby is harder (9); spinel is slightly softer (8), but both are durable.
For astrological purposes, only certified ruby is suitable, not spinel.
Telling them apart by eye is nearly impossible — a lab certificate is the decisive proof.

Conclusion

The similarity between ruby and spinel is as fascinating as the distinction between them is important — especially when the purpose of the purchase is astrological. This decision becomes easier with the right certificate and a trustworthy seller. Contact us for certified quotations on any gemstone.