Separating Glass-Filled Rubies Using the DiamondView
The DiamondView instrument is able to identify glass as the filler in a pair of heart-shaped rubies.
Nephrite Bracelet with Filled Cavity
A jade bracelet contains unusual fillers, used to create a smooth surface.
Strong Fluorescence in B-Jade Impregnated with Wax
A bangle is an example of the misconception that B jade is only impregnated by resin, when in fact wax-impregnated jadeite is also considered B-jade.
Update on Dyed Hydrophane Opal
Opal purportedly from a new deposit is found to be dyed.
Filled Pearl with Surface Features
A pearl, thought to be natural, is revealed to be a bead-cultured specimen with a pre-drilled nucleus.
Coated Beryl Imitating Emerald
Coating on a beryl demonstrates the importance of thorough examination of jewellery and gem materials.
Chalcedony Beads Coated With Titanium Nitride
Beads in an necklace show a metallic appearance not seen in chalcedony.
Testing identifies a new treatment method as the cause of colour in beeswax amber.
Hessonite thought to be glass-filled is found to have been treated with polymer.
Impregnated and Dyed Turquoise
Natural turquoise has been subjected to dyeing and three types of impregnation.