GIA recently released a video that provides an overview of lead glass-filled rubies and explains why it has begun to call them a "manufactured product" on reports. The video, which was created to educate the trade and public, also covers how to identify lead glass-filled rubies with a microscope and how to care for them. This article offers an in-depth understanding of this material....
(2012) Complete Story
There are a few scientific methods for precisely determining karat gold purity, some destructive (fire assay) and others nondestructive (X-ray florescence). Both methods require costly equipment, special procedures and a well-lit and ventilated area. A simpler method for determining gold purity in jewelry is the touchstone testing process, an age-old technique that is relatively nondestructive to jewelry and offers quick results.... (2011) Complete Story
Gemstones that become loose in their settings can cause damage to both the gem and the setting. A regular inspection of jewelry can catch this problem in its early stages, before too much damage is done. Vector tightening prong-set stones is a quick, safe and effective way to secure gemstones....
(2011) Complete Story
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