I want to polish a few turquoise stones I have with zam that have dull areas but I was wondering if turquoise is too soft to use wool pads. I use them for Jadeite and nephrite but jade is a much harder stone. I also wanted to ask about using diamond paste to smooth some stones but now I’m thinking turquoise is too porous. Is my only option sand paper? Thanks in advance.
The turquoise is inexpensive treated stone, probably Kingman, and at the time would have been considered near bottom shelf in terms of price and quality. These were usually delivered unstrung, with the stringing taking place in the shop or trading company which commissioned the work.
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Turquoise and variscite are closely related but chemically different. Variscite, does not contain copper which gives turquoise its characteristic blue green color.
Turquoise is a soft material, 4 – 5 on the mohs scale, which means most turquoise can be scratched with a penny. So, it is very common for a turquoise dealer to stabilize the stone. There are many different techniques used for stabilizing turquoise, some even have a patent. Basically what is done is turquoise is introduced to a foreign substance that is going to harden and deepen the color ...