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How Do They Treat Ruby Gemstones? | Gem Rock Auctions

How Do They Treat Ruby Gemstones? | Gem Rock Auctions

 · Dangers In todays article, we will give you a short introduction on how are mined and the involved. The main methods of are placer, underground and hydraulic the method depends on how deep into the earth the are situated. There are other methods which we will also briefly touch upon

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