NATURAL AUSTRALIAN BLACK OPAL

Item Type: SOLID NATURAL AUSTRALIAN BLACK OPAL CABOCHON LOOSE STONE WHICH SHOWS INTERESTING PATTERN AND COLOUR FORMATION. THIS BLACK OPAL IS PERFECT CUT WITH HIGH POLISH. PERFECT FOR ONE OF PIECE SILVER JEWELLERY MAKING AS NO TWO OPALS ARE THE SAME.

Origin : LIGHTNING RIDGE, BLACK OPAL IS FOUND MAILY AT LIGHTNING RIDGE

Opal Size : 16 X 12 X 5 MM Treated/Untreated : UNTREATED Weight (Carats) : 6.20 CTS

Colour : MULTI COLOUR RICH FIRE, BEAUTIFUL BLUE.

Pattern : BROADFLASH PATTERN

Number of pieces : 1

Accuracy of picture :

+More BrightAccurateLess Bright

Comments :

Brightness Rating, 1 Dullest to 5 Brightest :

+1233.544.55

Opal body tone as recommended by Australian Gemstone Association Ltd :

+

Base of opal (bottom) :

+Full opalClean backSome SandMajority Sand

Cabochon :

+LowMediumHigh

Definitions

Convert Weight : 5 Carats = 1 Gram Covert Size : 6 mm = 1/4 inch (approx)