Spinel
History's great imposter — the "Black Prince's Ruby" in the British Crown Jewels is actually a spinel. Vivid neon red "Jedi" spinels from Myanmar's Mogok and Namya, plus cobalt blue from Vietnam's Luc Yen, made spinel August's modern birthstone.
Known origins & mines
Mahenge Spinel Deposits (Epanko) · Tanzania
Marble-hosted deposit at Epanko village that erupted in 2007 with a 52-kg hot pinkish-red crystal - now the world reference origin for neon …
Mogok Valley · Myanmar
The 2000-year-old "Valley of Rubies" produces the benchmark pigeon-blood red with strong fluorescence. Mogok stones typically show syrupy co…
Ratnapura Gem Fields · Sri Lanka
"City of Gems" — 2500 years of pit mining in river gravels yield ruby alongside nearly every other gem species. Sri Lankan ruby leans pink (…
Luc Yen District · Vietnam
The An Phu market trades cobalt-blue and hot-pink spinels found since 1983 in marble hills — Vietnamese cobalt spinel is among the rarest co…
Kuh-i-Lal Spinel Mines · Tajikistan
The Pink Queen of Timur's treasures came from these Pamir cliffs worked since antiquity; large rose-pink spinels up to kilograms appear in P…
Namya Mines · Myanmar
North of Hpakant, Namya gravel produces neon pink-red spinels that rival ruby saturation without ruby price — the modern "Jedi"-adjacent mat…
Tunduru Fields · Tanzania
River-flat diggings discovered 1994 producing rainbow sapphire parcels alongside spinel, garnet and rare taafeite — one of Africa's most div…