Fluorite 13x18mm AAA Grade Oval Cabochon A After the glass has cooled

After the glass has cooled

orthorhombic crystals or in massive form

as well as some occurrences of dark gray

White African Opal is a white to cream to light tan stone with veining of black or gray

red or orange body color

Fluorite 13x18mm AAA Grade Oval Cabochon A After the glass has cooledFluorite is a luminous, soft and glassy stone, sometimes referred to as the most colorful mineral in the world. It is one of the most sought to after minerals among gem and mineral collectors, second only to Quartz. The term fluorescent was inspired by Fluorite, one of the first fluorescent minerals ever studied. It is frequently fluorescent under ultraviolet light, and this phenomenon is thought to be due to impurities of yttrium or organic matter