This is our Detailed explanation of Gemstone enhancements and treatments. In this section we are going to read about Composite gemstones.

There are many different types of composite or assembled gemstones. It is customary to speak of a doublet if two pieces of either the same of different material as combined, usually with a colorless cement. It continues where as if there pieces then triplet and so on. This method is most commonly used with opal enhancements to make the color of the opal gemstones to be more vibrant using a black cement at the bottom. These are also found in the new welo opal from Ethiopia in the market.

Main types of treatments that I recommend you to continue reading are:

Heat Treatment

Irradiation Treatment

Chemical Treatment

Surface Modification

Composite Gemstone

Synthetic Overgrowth

These are some of the treatments that are done most commonly in the trade.