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These rubies were determined to be glass filled, partly due to the use of the DiamondView.
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.

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Two white jade bracelets with dark color patches.
Nephrite Bracelet with Filled Cavity

A jade bracelet contains unusual fillers, used to create a smooth surface.

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The wax-impregnated bangle (left) showed bluish fluorescence under long-wave UV.
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.

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These two opals were represented as natural-color blue and pink opal from Mexico.
Update on Dyed Hydrophane Opal

Opal purportedly from a new deposit is found to be dyed.

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This 20.60 ct specimen was purchased by the client as a “natural white pearl.”
Filled Pearl with Surface Features

A pearl, thought to be natural, is revealed to be a bead-cultured specimen with a pre-drilled nucleus.

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Top: The drilled green briolettes. Bottom: Fluid inclusions, crystals, and two-phase inclusions.
Coated Beryl Imitating Emerald

Coating on a beryl demonstrates the importance of thorough examination of jewellery and gem materials.

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Beads with submetallic luster.
Chalcedony Beads Coated With Titanium Nitride

Beads in an necklace show a metallic appearance not seen in chalcedony.

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Steam-dyed “chicken-fat yellow beeswax” amber.
Steam-Dyed Amber

Testing identifies a new treatment method as the cause of colour in beeswax amber.

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Three rough hessonite samples
Polymer-Treated Hessonite

Hessonite thought to be glass-filled is found to have been treated with polymer.

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Dyed and impregnated turquoise.
Impregnated and Dyed Turquoise

Natural turquoise has been subjected to dyeing and three types of impregnation.

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