Overview:
 
Natural Solid Australian Boulder Opal Ring.

This boulder opal is of the highest quality and calibre one can find, very bright and Lively displaying vivid colors of the rainbow including the rare RED! it is absolutely flawless and immensely beautiful!

Mounted in solid 18k Yellow gold in a simple and charming Florentine design.
 
Very hard to find, this superb 100% natural solid black opal is a stunner. Displaying gorgeous Red, Purple, green, blue, gold and orange multicolours and an ultra-bright pattern with loads of fire and brilliance, this brilliantly-coloured opal is a real gem.
 
Brilliance scale: B4.5 (very bright to brilliant - gem quality)
Total Carat Weight (TCW): 5.80 carats
Gemstone Type: Boulder Opal
Size: 17.7 x 12.3 x 2.4 millimetres
Cut Grade: Excellent
Gemstone Shape: Oval
Gemstone Creation: Natural
Gemstone Form: Professionally cut and polished
 
Specifications:
 
Weight: 9.42 grams
 
Stones: Large 5.80ct natural solid Australian boulder opal gemstone measuring 17.7mm x 12.3mm and 2.4mm thick.
 
Size & Measurements: The ring is a Size 11 (US) . Can be resized. 
 
Metal & Hallmark: 18 karat solid yellow gold (ring) - Ring hallmarked 750 (18k).