Ruby & Sapphire - Treatments and Identification: Decades of Advancement
Visut Pisutha-Arnond
Gem and Jewelry institute of Thailand (2017)
In Collection
Corundum, Synthetics/Treatments
Paperback 9786169145097
Various methods of treatment have been invented to improve the color and/or clarity of low quality corundum. Among those, simple heating, flux-assisted heating, diffusion heating and lead-glass filling have been the common techniques used for the treatment throughout the last several decades. On the other hand, high-pressure-high-temperature (HPHT) treatment, oiling, dyeing and surface coating were occasionally encountered in the gem market. The emphasis of this review, therefore, will be given to the more common categories in chronological order. Finally, customers should be informed about the treatment of that particular piece of gemstone before buying, as this is an important aspect that can build “Consumers’ Confidence”.
Product Details
No. of Pages 95
Height x Width 260 x 185  mm
Personal Details
Read It Yes
Store GIT
Location B 3
Purchase Price 21.00 CHF
Purchase Date avril 2018
Condition First hand
Links GIT