Hence, we propose a portable setup for the automatic mineral identification of gemstones based on a custom‐built 405nm Raman spectroscopy probe system. This device enables the noninvasive mineral identification
A surface crack on a gemstone. Gems with fissures may befracture filled. Fluorescence The ability of some gems to appear a different color when viewed under ultraviolet light. Whether or not a stone has fluorescence is a valuable aid in gem identification. ...
The hardness stone directory chart for most common minerals is a must appreciated bonus. A.S., Montreal Canada Alain Simard on Jun 1st 2018 Mohs hardness tester for Mineral identification. I first heard of this from a friend who has had one for some time. He uses it frequently and says...
Ruby is the most popular red gemstone, and sapphire is the most popular blue gemstone. The pie chart on this page shows the share of colored stone imports on a dollar-value basis that went to the categories of sapphire, ruby, emerald, and all other gemstone varieties during the 2015 ...