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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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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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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Source - Queensland Koroit. Weight - 365 carats - 73g. 4 - The colour of theOpals Body Tone N1 - N4 - Is for black tone body types. Body Tone N5 - N9 - Is for lighter coloured Opals. Based in Cornwall.
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Chunk of a Koroit Queensland boulder opal nut, rough piece which shows natural pattern. Has an area of red green and blue fire, then a vein of the famous Koroit pattern that runs around the whole stone with fire in.
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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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Source - Queensland Koroit. Large Queensland boulder opal rubbed piece 132.5 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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A chunk of a Koroit Queensland boulder opal nut, Sliced to show beautiful natural pattern and then one rough edge with lovely green blue with a tiny hint of red opal. Source - Queensland Koroit. Weight - 1050 carats - 210g.
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