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Opal Matrix

Matrix when referred to opal can be a number of different things. The most commonly known type of opal matrix is Andamooka Matrix. Andamooka matrix is a treated type of opal. The color will only be visible when it has been treated by boiling it in sugar and then using acid to treat it. Even though matrix opal can look beautiful the beholder, don’t be fooled that it is worth the same as natural solid opal. I have seen many people invest in matrix opal and not know what they buying and paying too much. Andamooka will be a very 2 dimensional type of opal with no depth of play…

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Opal Cabochons

The term cabochon refers to a curved and polished dome. Opals are cut as cabochons. The most popular shape being an oval. Opal cabochons can be cut low, medium or high domed. Advantages of opal cabochons A cabochon cut allows a setting edge for the jeweller. When cutting the edges of the dome are slightly moving inwards thus allowing the jeweller to set the piece to the edge. Unlike a faceted gemstone which can chip on the edges a cabochon can only be scratched on the dome and can be easily be re-polished. A high domed cabochon gives the opal more depth of colour. A darker opal will predominately be cut…

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