JOALYS Collection

Blue Spinel Collection

5 stones in stock · $552 to $2,066 · $175–$401 per carat · 3.15–5.15 ct

Blue spinel is one of the most sought-after gems among serious collectors. From electric cobalt blue to steel grey-blue, this spinel variety captivates with its rarity and natural unheated beauty. Our collection of 9 pieces offers an exceptional selection.

3.15 carats

$552

$175/ct · Eye Clean

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Blue Spinel: From Electric Cobalt to Steel Blue

Cobalt blue spinel, primarily from Sri Lanka and Vietnam, is considered the most valuable spinel in the world. Its intense blue from cobalt traces rivals the finest sapphires. Grey-blue and steel blue spinels offer a more accessible but equally fascinating alternative.

Unheated, Naturally Magnificent

Like all spinels, blue is never heat-treated. Its color is 100% natural, a major advantage over often-heated blue sapphires. 8 Mohs hardness.

JOALYS

9 pieces sourced directly. Independent laboratory report included. Insured shipping, 7-day guarantee.

Frequently Asked Questions

Is cobalt blue spinel rare?

Extremely rare. Cobalt blue is the most valuable spinel in the world. Quality specimens from Sri Lanka and Vietnam reach prices comparable to the finest sapphires.

Blue spinel vs blue sapphire?

Blue spinel is always unheated, which is rare for sapphires. It has 8 Mohs hardness (vs 9 for sapphire) but distinctive brilliance. Cobalt blue spinel rivals the finest sapphires in beauty.

Is blue spinel suitable for rings?

Yes. 8 Mohs hardness, resistant to everyday scratches. Its intense blue creates spectacular jewelry.

Where do the finest blue spinels come from?

Sri Lanka and Vietnam for cobalt blue. Tanzania and Myanmar for grey-blue and steel tones. Each origin has its distinct character.