Description
One place in the world where limestone matrix opal occurs, is in a small area of South Australia called Andamooka. For this reason, this material is called Andamooka matrix opal. When it is treated, it is known as Andamooka treated matrix opal and the focal bead in this Rainbow piece is one of these treated opals. Treatment of the limestone matrix involves a fairly simple process of simmering the stones in a very rich solution of sugar in water, followed by a period of simmering in a bath of very concentrated sulfuric acid. The action is that the sugar penetrates into the limestone matrix and then the acid 'cooks' it turning the white sugar behind and around the 'pockets' of opal, into a black carbon. The result is that the blackened matrix surrounding the pockets of opal, does not diffract light, and the colors of the opal beam through. The quality of the finished stone is gauged by the brilliance of the fire and the richness and range of the colors. Apparently, this treatment is no harder than making dinner. This is a cute little wearable piece strung on 2mm agate beads. It is strung to16" long with a sterling spring ring clasp.
Sorry but this necklace has already found its forever neck. It is here in case you would like to custom create something specifically for you that has a similar feel. Price varies according to materials. Thank you for looking...
To discuss the creation of a similar custom piece please contact us today by clicking here!
