Australian Rough Crystal Opal 37.5ct Coober Pedy Olympic Rubs I38


1 in stock


This rough opal was mined by us on the Olympic opal field of Coober Pedy Australia.

After 30 years in the opal business, we firmly believe opal can be the most beautiful gem on Earth, and we love the colourful characters and lifestyle of the outback opal fields. Here at Star Mountain Gems we are privileged to do our best to acquaint the world with the colour, light and beauty that quality Australian opal has to offer.

Video of us outback opal hunting the pocket this opal came from on Olympic at around 12:55 :

Item Specifics:


WEIGHT: 37.5 carats, 7.5 grams or 0 oz 5 dwt, weighed dry.

These are medium to high yield rubbed pieces.

These stones should cut around 24 -27 carats of solid opal low dome cabochons or could be sliced for doublets and / or inlay etc to increase yield potential.

Use the ruler as your guide to size (INCHES)

We do not sell opal simulants of ANY sort. All of our opal is 100% guaranteed natural Australian opal.

The color variations in some photos are due to different light angles and distances. All of our auctions are photographed with macro settings under a halogen lamp. In all photo’s the opal is immersed.

Please check the dimensions carefully as the opal will not be as big in your hand as it looks on your monitor! Please check the description carefully before bidding and view your purchased rough opal wet in sunlight or in a dark room with a direct light source ie: desk lamp, down light etc. (As photographed and practiced throughout the opal industry).

Additional information

Weight 85 g

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