Opalite play This Opalite pendulum 32mm selection weighs 8g. Opalite is an artificial form of opal an amorphous rock, lacking a crystalline structure. Opal is formed when silicic acid gel loses its water and solidifies. Tiny silicon dioxide globules are formed in with a small amount of water and gas enclosed. These globules bend light, giving the opal its wonderful play of colour. The flashing colours are called fire or opalescence. The fire appears as sparkles of vivid colours floating on top of the stone. Colour: black, blue, green, pink, red, white; iridescent or pearly Transparency: opaque, translucent, transparent Lustre: vitreous, waxy Crystal system: amorphous Fracture: uneven Hardness: 5.5-6.5 Mineral group: silicates Formula: SiO₂·nH₂O Location: Australia (97 per cent) Ethiopia, Madagascar, Mexico, USA Rarity: rare, extremely rare Chakra: Throat, Crown Emotional: amplifies, awareness, desire, eroticism, release inhibitions, seduction, sexuality, soothing Mental/intellectual: amplifies, love of life, optimism, spontaneity, unconventional thinking Spiritual: angelic beings, chakra rebalancing, creativity, inspiration, protection, purification. Brings forth the muse. Astrology: Libra Number: 8; Pink Opal, 6; Black Opal, 1 Birthstone: October