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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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Sixteen samples of facet-quality ruby
Preliminary Observations on Facet-Grade Ruby from Longido, Tanzania

Microscopic observation and trace element analysis is performed on rubies from Longido.

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Map showing Muling’s location
Ruby and Sapphire from Muling, China

An emerging corundum deposit in north-eastern China is discussed.

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2016 GJX show at Tucson
Tucson 2016

An overview of the 2016 gem shows.

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Wheel of Light Numinous pendant
Wheel of Light’s Mesmerising Optics

A closer look at the Spectrum award-winning pendant from Nature’s Geometry.

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Rough rubies from Zahamena National Park in Madagascar.
Rubies from a New Deposit in Zahamena National Park, Madagascar

A field expedition from GIA Bangkok explores a new ruby deposit and collects specimens for study.

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Composite ruby rough
Unusual Composite Ruby Rough

In this composite, synthetic ruby rough attached to two natural ruby slabs was fashioned to imitate natural material.

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Coated lawsonite pseudomorphs coated to resemble chromian lawsonite
Coated Lawsonite Pseudomorphs Presented as Chromian Lawsonite

Samples composed of lawsonite pseudomorphs were coated to make them appear deep green and imitate chromian lawsonite crystals.

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Synthetic ruby in matrix
Assemblage of Synthetic Ruby in Calcite Matrix

Material set in a calcite matrix and represented as natural ruby is proven to be synthetic.

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Winter 2012 Gem News International

A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewellery manufacturing techniques and industry trends.

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