Item Type: SOLID NATURAL BLACK OPAL

LIGHTNING RIDGE AUSTRALIA

OPAL Size: 8 x 5 x 1 MM

UNTREATED

Weight (Carats):  IN HEADER

Colour : MULTI ,MIX HIGH GRADE OPALS

Pattern :

Number of pieces: one AS PER IMAGES

Accuracy of picture :

+  More Bright Accurate Less Bright

Comments :

Brightness Rating, 1 Dullest to 5 Brightest : 3.5 BRIGHTNESS

++++++
1 2 3 3.5 4 4.5 5

Opal body tone as recommended by Australian Gemstone Association Ltd : N2

+

Base of opal (bottom) :

+
+
Full opal Clean back Some Sand Majority Sand

Cabochon :

+
Low Medium High Definitions

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

READ THE OPAL PLUS STORY HERE