To buy the opal see link https://www.opalauctions.com/auctions/2625-cts-semi-black-opal-lightning-ridge-lro121-676171 SEMI BLACK OPAL This is a natural stone mined in Lightning ridge. This stone is suited to a ring or pendant. It is well polished and showing good fire . Body tone N5 Brightness-B1 Only those stones with a body tone of N5 to N6 are considered SEMI BLACK OPAL THE NEW OPAL ASSOCIATION BRIGHTNESS CHART HAS B1 AS THE BRIGHTEST. NOTE -unfortunately our camera picks up the mauve in the stone which the eye cant see so please consider this colour to be blue if in this stone. ... https://www.youtube.com/watch?v=lYb9vFBHaa8

A Harlequin pattern is the rarest of all Opal patterns. Opals can fetch hundreds of thousands of dollars when they display this pattern. Learn what defines a Harlequin pattern Opal now: https://www.opalauctions.com/learn/technical-opal-information/what-is-a-harlequin-pattern-opal ... https://www.youtube.com/watch?v=KyG94-UJYtY

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Taking The Sand Spot Out Of A Black Opal | Opal Cutting Get your Free book of Beautiful Opal's we've collected here: https://mailchi.mp/opalauctions/opal_ebook - - - A quick opal cutting video on taking a sand spot of a black opal. It's a great behind the scenes look on opal cutting. Watch More Opal Cutting Videos: https://www.opalauctions.com/learn/opal-information/the-opal-rough-cutting-channel Don't forget to share and subscribe! Share this video: https://youtu.be/cZkEWvB0eog Shop: Opal Auctions https://www.opalauctions.com Facebook: Opal Auctions https://www.facebook.com/OpalAuctions Instagram: Opal Auctions https://www.instagram.com/opalauctions ... https://www.youtube.com/watch?v=cZkEWvB0eog