Specific gravity (SG) is the ratio of a substance’s density to the density of a reference substance. The reference substance is nearly always distilled water, which has an SG value of 1. Anything with
The term “impurities” has many connotations, but in gold mining and refining, impurities refer to anything that lowers the karat weight or millesimal fineness of a sample of gold. In our business,
A client recently asked if the items we buy include trophies and medals. Well, just like the significance of the accomplishments they commemorate, the aftermarket value of trophies and medals varies
Earlier this year, the International Institute of Diamond Grading & Research (IIDGR), a De Beers Group company, announced SYNTHdetect – a new type of screening device that jewelry and gemstone
It’s common knowledge that diamonds are created by the incredible pressure and heat deep below the surface of the earth – only becoming accessible after volcanic activity brings them closer to earth’s
For centuries, diamonds have been known for their incredible hardness. Now, researchers from the Australian National University have devised a way to synthesize diamonds that are up to 58% harder than
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