How much does Spinel cost?

Spinel is an oxide mineral, magnesium aluminum oxide (MgAl₂O₄), historically confused with ruby because the two form in the same deposits. Spinel forms in the same geological environments as ruby and sapphire - aluminum-rich metamorphic rocks and marbles. In fact, spinel and corundum frequently occur side by side in the same deposit, which is why they were confused for centuries. The Mogok deposits in Myanmar produce both ruby and red spinel from the same marble host rock.

Unlike corundum, spinel is singly refractive (cubic crystal system), which gives it a different optical character - spinel has a clean, vivid color without the directional color variation (pleochroism) seen in corundum. This can actually be an advantage aesthetically, as spinel shows consistent color from all angles.

The 2007 discovery of neon pink-red spinels from Mahenge, Tanzania, sent shockwaves through the gem world. These spinels glow with a fluorescent intensity unlike anything seen before, and prices for top Mahenge stones have skyrocketed.

Identification Guide

Spinel is identified by its cubic crystal habit (octahedral crystals), hardness of 8, and lack of pleochroism. Unlike ruby and sapphire, spinel is singly refractive - it shows no doubling of facet edges when viewed through the stone.

Distinguish from ruby (doubly refractive, trigonal crystals), garnet (lower hardness, different SG), and red tourmaline (lower hardness, prismatic habit). Spinel's octahedral crystal form is diagnostic when crystals are available.

Spotting Fakes

Synthetic spinel has been produced since the early 1900s and is common. Flame-fusion synthetic spinel is used to imitate many gems (ironically, synthetic blue spinel is more often sold as fake sapphire or aquamarine than as spinel). Lab testing distinguishes natural from synthetic. The biggest historical 'fake' involving spinel: the 170-carat 'Black Prince's Ruby' in the British Crown Jewels and the 'Timur Ruby' are both actually spinel.

Some links in this post go to Amazon. Crystal Almanac earns a commission from qualifying purchases at no extra cost to you. Tools recommended here are ones we would use ourselves to run the tests described - the recommendation comes first, the link is downstream of it.

Verify Spinel Before You Buy

Affiliate picks

Spinel gets imitated with glass, dyed stand-ins, and cheaper lookalikes. These four tools run the checks in the Spotting Fakes section above, so you can tell real from fake before you pay - online, at a show, or in a shop.

10x triplet jeweler's loupe$20-40
The first tool worth owning. Round gas bubbles (glass), dye pooled in cracks (dyed howlite, magnesite, agate), and flow lines are invisible to the naked eye and obvious at 10x. A triplet lens keeps the edges sharp.
Shop on Amazon
Mohs hardness pick set~$40
Calibrated picks settle the cheap swaps in seconds - howlite (3.5) sold as turquoise (5-6), glass (5.5) sold as quartz (7). Faster and more accurate than the fingernail-and-knife method.
Shop on Amazon
0.01g digital pocket scale~$15
Density catches what the eye misses. A glass 'quartz' weighs suspiciously light; lead-loaded plastic 'lapis' weighs suspiciously heavy. Weigh, compare to the known density, and flag the mismatch before the money leaves your hand.
Shop on Amazon
365nm UV flashlight$20-30
Many stones have a distinctive fluorescence (hyalite opal, fluorite, ruby, scheelite). A longwave UV light is the fastest tiebreaker when a piece passes the other tests but still looks off.
Shop on Amazon

Cultural & Metaphysical Traditions

Presented as cultural traditions, not scientific evidence

Spinel spent centuries being called ruby - it had no separate identity in the gem trade until modern mineralogy distinguished them. The great rubies of royal collections (British, Russian, Iranian) are largely spinel. Rather than diminishing spinel's reputation, this history has given it a romantic mystique as the stone that fooled kings. Modern collectors consider fine spinel undervalued relative to ruby and sapphire.

Metaphysical and “healing” associations are cultural traditions, not medical advice or scientific fact. Crystals are not a substitute for professional medical care.

ChakraRoot (red)ChakraThird Eye (blue)ChakraHeart (pink)ZodiacAries ZodiacSagittarius ElementFire

Where It's Found

Myanmar - Mogok

Finest red spinels, historic source alongside ruby

Sri Lanka - Ratnapura

Full color range, alluvial deposits

Tanzania - Mahenge

Exceptional neon pink-red, modern sensation

Tajikistan - Pamir Mountains (Kuh-i-Lal)

Historic source of 'Balas rubies'

Price Guide

Entry$50-200/ct (good quality)

Mid-Range$500-3,000/ct (fine)

Collector$10,000+/ct (Mahenge neon or top red)

Good to Know

💎

Scratch test: At hardness 8, Spinel can scratch glass and steel. It's durable enough for any type of jewelry.

🌍

Global supply: Found in 4 notable locations worldwide, from Myanmar to Tajikistan.

⚖️

Heft test: Spinel has a specific gravity of 3.60 - noticeably heavier than quartz. You'll feel the density when you pick it up.

Care & Safety

What spinel can and cannot tolerate, based on its hardness (Mohs 8) and chemistry (MgAl₂O₄).

Can Spinel go in water?

Yes. Spinel is hard (Mohs 8) and chemically stable, so plain water is fine for rinsing and cleaning with mild soap. Avoid prolonged soaking, which serves no purpose, and dry the stone afterward.

Can Spinel go in salt water?

Not recommended, even though spinel itself is hard and not water-soluble. Salt is corrosive and mildly abrasive: it can dull a polished surface, attack metal settings, and crystallize inside small fractures as the stone dries. A brief dip will not destroy spinel, but rinse it with fresh water afterward and dry it. For routine cleaning, plain water is the safer choice.

Water safety for every stone →Full crystal care guide →