Enstatite is a magnesium pyroxene that gem collectors know in bronze-brown to green faceted stones, occasionally with a bronzy schiller in its iron-richer forms. Sri Lanka, Myanmar and East Africa provide most gem material; hardness 5.5.GEMIC Institute’s enstatites are natural, certified by our accredited gemologists in Siem Reap and filmed stone by stone. Each is unique — worldwide tracked shipping and a 30-day return window included.