Sugilite

KNa₂Li₃(Fe, Mn, Al)₂Si₁₂O₃₀, Potassium Sodium Lithium Iron Manganese Aluminum Silicate

• Sugilite is a somewhat obscure mineral named for the Japanese geologist who discovered the first specimens in 1944, Ken-ichi Sugi.
• Hardness: 6-6.5
• Iwagi Island, Shikoku, Japan as well as Mont Saint-Hilaire, Quebec, Canada and most importantly, South Africa.

$85-$285