158 CTS Australian Opal Rough Dark Parcel Lightning Ridge - Potch Opal

158 Carats Lightning Ridge Potch Opal Rough Parcel from Lightning Ridge Australia. Potch opal is a common opal with no colour bar, hence does not exhibit any play of color. This lot displays minimal play of color. It comes in a variety of colours such white, grey or black. Potch is opal; it is exactly the same mineral – microscopic spheres of silica dioxide. The only difference is that in potch, the tiny spheres are jumbled, whereas in precious opal they’re all laid out evenly. Potch opal is a great starting stone to help beginners become comfortable with lapidary equipment without the thought of polishing away hundreds or even thousands of dollars worth of opal down the drain. Potch opal can be made into jewelry. Recommended uses: Hobby/Gamble/beginner Colour: Purple/Blue/White with a hint of red Gemstone: Natural Solid Dark Opal Rough Treatment: None Measurement given is of the largest piece Item Information SKU: Dimensions (mm) 30.02 x 23.75 x 9.84mm Weight (carats) 319.2 carats Type: Rough Body Tone: N5 Body tone is dark not black. You’ll notice a range of body colors here. Treatment: None Photos show lot for sale. Water was sprayed on them to show how it will look finished. Most taken in natural outdoor light. Some photos show opal dry not wet. The opals come in a range of sizes. Offers considered. Bundle to save more. Questions? Please leave a comment below.