The basic gem testing articles offer tips on quick methods of testing using basic instruments. With practice basic tools can provide reliable indications of a stone’s ID. No tool on its own is a substitute for thorough gemological testing. So, keep in mind that when in your lab with more advanced equipment available, do not stop short at these simple tests.
Gem TestingSouth Sea and Tahitian cultured pearl producers have experienced significant interruptions to the cultivation process during the pandemic. The effects will be felt during the course of the coming few years.
Market TrendsPrasiolite: The least understood variety of quartz. The idea of “common” might discourage gaining further knowledge about a gemstone. The quartz group gems, as common as they are, seem to be the least understood not only…
*Gem Focus & Market Pulse (Free Subscriber)Meteorite collecting requires quite a specialized understanding of structures of other planetary objects and stars in our galaxy.
*Gem Focus & Market Pulse (Free Subscriber)The use of silicon carbide (synthetic moissanite) led to the development of electrical conductivity testers of similar appearance, but which worked on different physical properties—electrical rather than thermal.
Featured ArticlesThe bangle is the most popular jade jewel, but it is also the most complex to select. Next to all quality parameters, personal preferences, and budget, choosing the right size is of utmost importance. And when it comes to green and purple jadeite, perfect bangles are, as one would say, unheard of. Table 1 shows approximate retail values that currently apply for inferior to exceptional quality jade.
Featured ArticlesShortages of rough and increased consumer demand are driving monthly price increases. Predictions of a slowdown in spring did not happen. Inventories at very low levels.
Diamond MarketAs the holiday season approaches, one of the stories in the colored stone market continues to be the difficulty that dealers are having sourcing new stock.
Colored Stone MarketOne-step testing is a tempting proposition; however, it requires extensive knowledge and experience to perform the minimum number of tests required for accurate and conclusive identification.
Gem Testing