ROUGH MATRIX FROM ANDAMOOKA 17.51 CTS [MS2248 ]

 

 

THIS IS NATURAL WHITE OPAL MATRIX FOUND IN ANDAMOOKA SOUTH AUSTRALIA THAT HAS BEEN TREATED TO LOOK LIKE EXPENSIVE BLACK OPAL. THE TREATMENT IS PERMENANT BUT IF YOU RE SHAP OR CUT IT YOU WILL HAVE TO RE TREAT IT.THE COLOURS AND FIRE ARE AMAZING.ON THE OPAL FIELD THEY CALL THIS CONCRET WHICH IS A HORRIBLE NAME FOR SUCH A BEAUTIFUL STONE.WE DO OFFER GEM MATRIX ON THIS SITE WHICH YOU CAN GET A NATURAL POLISH ON IT-THAT SELLS FOR $10 -20 PER CARAT WHILE THIS SELLS FOR $1-2 PER CARAT FOR LARGER STONES.THIS MATERIAL IS HARD TO GET A GOOD POLISH ON IT SO MOST PEOPLE USE LIQUID GLASS ON IT.

 

WEIGHT17.51  CTS APP

SIZE 32X 17X 8 MM APP

NOTE WE HAVE TAKEN THE PHOTO WITH THE ROUGH WET.

TREATMENT
Most cutters on the fileld use acid to treat the rough which can be a bit dangerous-a more safer methosd is as follows.1 kilo (about 2 pounds) brown sugar. 3 litres water (4 - 5 pints) Mix until dissolved. place in electric crock pot or other pot to heat. After cleaning and shaping stones to your desire place in syrup and bring to hot without boiling. Leave cooking slowly for 12 hours.. Remove and wrap tightly (no air bubbles) in aluminum cooking foil and place in a cast iron pot or directly onto coals from an open fire and leave for 4 hours to carbonize sugar. Remove from heat (stones will remain hot for a long time). Rub outside carbon from stones with coarse emery paper using plenty of water. (I put them in a hand bowl and scrub them under the water) Keep rubbing until the color shows through. After you have the desired effect dry the stone with a paper towel and leave under a normal light globe to warm then coat with clear auto finish lacquer. Allow to dry completely before handling.

 

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