Sword in the Stone
Tourmaline in Morganite
Morganite A pink gem variety of Beryl.
Formula: Be3Al2(Si6O18)
System: Hexagonal
Lustre: Vitreous, Sub-Vitreous, Waxy, Greasy
Hardness: 7½ - 8
Tourmaline is a crystalline boron
silicate mineral compounded with elements such as aluminium, iron, magnesium,
sodium, lithium, or potassium. Tourmaline is classified as a semi-precious
stone and the gemstone comes in a wide variety of colors.
System: Trigonal
Hardness: 7
From: Pederneira claim, São José da Safira, Doce valley, Minas Gerais, Brazil
Photo credit: Joe Budd
