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FIRSTLY, APOLOGIES FOR THE PICTURES. THEY WERE TAKEN WITH MY CELL PHONE.
SECONDLY, THEY ALL HAVE PLAY OF COLOUR OR FIRE EVEN IF I HAVE NOT CAUGHT IT WITH MY PHONE.
Opals displaying play of colour are known as PRECIOUS OPALS, and opals lacking any play of colour are know as COMMON OPALS. Gems can be cut from both the Precious and Common forms, but Precious Opal is the priamry gem form of this stone. There are many varieties of both Precious and Common Opals. The most desired and beautiful form of opal is Black Opal, which is opal with a dark blue, green, grey or black background with a strong play of colour. Next in importance is White Opal, which is Opal with a light coloured body color (white, yellow, cream, etc.) with strong play of colour. Also important is Fire Opal, or Mexican Fire Opal, which is a transparent to translucent deep-orange red form of Common Opal. Fire Opal can also display play of colour, and this is a rarity called Precious Fire Opal.
PICTURE IS ENLARGED
Gem type:OPAL
SHAPE | MIXED CABOCHON | TREATMENT | NATURAL |
WEIGHT | 6.01 ct | ORIGIN | ETHIOPIA - YITA RIDGE, WELO, TSEHAY MEWCHA |
DIMENSIONS | MIXED | CLARITY | TRANSLUCENT |
COLOUR | PRECIOUS OPALS WITH PLAY OF COLOUR & PRECIOUS FIRE OPALS (FIRE OPALS WITH PLAY OF COLOUR) | HARDNESS | 6 |
LUSTRE | VITREOUS | QUANTITY | 8 |