115ct Rough Fairy Matrix Opal Premium Nobby from Winton Queensland (23g, 0.8oz)

Description: 115ct Rough Fairy Matrix Opal Premium Nobby from Winton Queensland (23g, 0.8oz) With a higher iron content in its sandstone matrix, most Fairy Opal finished stones with one or two treatments will achieve a body tone in the N1-N4 range (Black Opal). - Whereas other matrix materials at this stage will have a body tone in the N5-N6 range (Dark Opal) with some N4 Black. Queensland Fairy Matrix Opal is an affordable way to create great looking black opals, with the added protection of a glassy resin coating. Treated to show the higher grade opal fire. - will need a final treatment after cutting. * Pictures taken wet. Has been; sliced to show face of the stone, permanently darkened to N3/N4 with a single sugar carbon and heat treatment. - easier treatment method due to properties of this material. * Please refer to pictures and video for size and quality. - WYSIWYG * Treatment Process: Dissolve sugar into hot water at about 50/50 ratio,Place stones into sugar water mixture for 1 day, Take stone(s) out of sugar water mixture and dry naturally for 1 day,Place stone(s) individually in a double piece of tin foil (aluminium foil) and add spoon full of vegetable oil (any),Wrap the foil around the stone(s) - not too tightly,Place stone(s) in foil onto a BBQ - medium heat with closed lid for 1 hour,Turn off BBQ and leave it for 2 hours to cool. Clean the carbon off the face of the stone (with a CAB, Rotary, Sander, Sand paper) and Ta-Da! Finish a stone in 3 steps:Shape and rub stone down to at least 2000 grit,Wash and then dry the stone thoroughly,Coat in a two part epoxy resin for a glassy finish. Coat of resin to seal and protect the stone and for additional lustreAfter cutting and polishing, a final coat of clear resin is applied which seals and protects the stone, and adds a glossy finish. A word on Stabilizing Fairy Matrix Opals can be stabilised if the rough stone is soft or crumbly. Can be stabilised if you are looking to polish a stone without a finishing coat of resin. - outcomes do vary and there are many resources that show how this is done. Will combine shipping. All items sent registered mail Australia Post International buyers please note:Import duties, taxes and charges, if any, are the buyers responsibility

Price: 112 AUD

Location: Sutherland

End Time: 2024-11-22T22:32:30.000Z

Shipping Cost: 13.13 AUD