beautiful Australian Koroit boulder opal from the Yowah region. lovely plays of colour, showing blue, purple green total weight 350 CTS CHECK OUT MY OTHER OPAL LISTINGS
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Rough koroit/yowah opal..most have patten some have colour..I have tried to show the best I can in pictures and videos (dry and wet) it weighs altogether at 556.9ct
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Koroit Boulder Opal rough Piece. Blue and green fire pattern mixed with natural pattern. Source - Queensland Koroit. Weight - 23g - 115 crt. Based in Cornwall. (watch out for the ones saying gamble rough, no/little colour etc you are just buying worthless potch).
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3 pieces of a Koroit Queensland boulder opal nut, Split to show beautiful natural pattern and with rough edges, hints of blue and green opal. Source - Queensland Koroit. Weight - 900 carats - 180g. Based in Cornwall.
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The Boulder Opal gemstone from Queensland, Australia is a stunning piece with a bi-colour/multicolour . This natural gemstone, measuring 2.1 cm in length, 1.7 cm in width, and 1.3 cm in depth, features a rough shape . With beautiful opalescence gem opal, 16 carats
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This Koroit Boulder Opal is a stunning piece with a deep green and blue colour, originating from Australia. The gemstone is rough in shape and opaque with ideal cut grade and opalescence effect. Measuring 20mm in length, 12mm in depth, and 9mm in width, this natural gemstone is perfect for any high level jewellery making project, either as a secondary addition or as a one off specialty centre piece. With no enhancements or modifications, this Australian rough boulder opal is a very beautiful and desirable addition to any gemstone collection.
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The rough shape of the gemstone retains the authentic beauty of its natural form, unpolished to preserve its raw, eye-catching charm. Its excellent cut grade ensures that the stunning bi-colour/multicolour gemstone effect is showcased, while the eye-clean clarity grade confirms its quality.
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Source - Queensland Koroit. Queensland boulder opal rubbed piece 151 carats - rough opal needs cutting. Based in Cornwall. (watch out for the ones saying gamble rough, no/little colour etc you are just buying worthless potch).
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