Black Chalama Opal Ring / cabochon / new- 1.96 g - (1)

Ring Black Chalama Opal / Cabochon / new

In 925. Sterling silver set

10,4 mm x 6,5 mm

Weight: 1.96 g

New and unworn

Ring size:

U 54
UK N
US 6,8
Fr 14
Innendurchmesser: 17,2 mm

Black opals occur, just like their differently colored counterparts, as rounded to knobby masses without any recognizable crystal structure. Their beauty usually reveals itself only after the stone is cut.

Characteristically for this form of opals is their opalescence, which is expressed in an intense rainbow shimmer.

Additionally, the host rock of the opal here is dark, grey to black, which gave it this name.

Black opals form, just like other opals, from siliceous fluids that crystallize in sedimentary or volcanic rocks.

Their characteristic shimmer is due to water inclusions inside this mineral.

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