Spinel spent centuries hiding in royal treasuries under the name “ruby” — the celebrated Black Prince’s Ruby of the British Crown is in fact a magnificent red spinel. Today gemologists prize spinel in its own right: a singly-refractive gem of pure, saturated color, excellent brilliance and a solid 8 on the Mohs scale.Red and hot pink remain the most coveted hues, joined by cobalt blue, lavender, and steely gray — all typically untreated, a rarity in the modern gem market. Myanmar, Sri Lanka, Vietnam and East Africa supply most fine spinel today.Every spinel at GEMIC Institute is natural, individually tested by our accredited gemologists in Siem Reap and sold with its laboratory certificate. What the listing photo and video show is precisely the stone you receive — each one a unique piece, permanently withdrawn once sold. Worldwide tracked shipping and a 30-day inspection period protect every order. For a specific spinel color or size, talk to our gemologists.