
A Useful Technique to Confirm the Hydrophane Nature of Opal
Observing a water drop’s interaction with opal, as well as refractive index, can confirm a specimen’s hydrophane nature with less risk of breakage than total immersion.

Amber with Insect-Bearing Filling
Natural amber beads were found to have been filled with plastic and a variety of insects.

Green Sapphire Filled with Glass
Analysis reveals blue lead glass filling in a sapphire that has an overall green bodycolor as a result of the filling’s combination with natural yellow color.

Diamond with Unusual Laser Manufacturing Remnant
An unusual laser manufacturing remnant, possibly once used to guide a gem cutter, was left behind in a clock-like shape.

The Museum of London’s Extraordinary Cheapside Hoard
The history and mysteries behind a treasure of jewels hidden during the 1600s, a window to the past being fully opened to the public for the first time since a chance discovery a century ago.

Three Occurrences of Oregon Sunstone
Chronicles a visit to the high desert of eastern Oregon to examine commercial sources of this natural copper-bearing feldspar.









全世界最具代表性的奢华珠宝商幕后探秘
2013 年 9 月 18 日,GIA 和 French Connection Films/Quasar Multimedia 在美国 西海岸举行了《梦想大师》首映礼。





碳化硼:一种新的黑色钻石仿品
Specimen sold as black diamond identified as ceramic material commonly used in hard-plating applications

.jpg)


