The quality and size of this 4.04 ct CVD-grown diamond ring demonstrate the advancing technology in laboratory-grown diamonds.
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The New York lab recently examined several diamonds with an interesting variation on the cabochon.
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Jürgen Schütz discussed the opal sourcing and cutting activities of the German firm Emil Weis.
Read MoreA new display area has helped this unique museum to establish itself as one of the finest gemology exhibits in the world.
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Master lapidarist Stephen M. Avery, known for his signature cuts, reflects on his 50 years in the business.
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Two rare gray spinel stones stand out at the AGTA show for their exceptional size, quality, and color.
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Review of The Secret Teachings of Gemcutting: 50 Classic Gemstone Designs, by Justin K. Prim.
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A centuries-old diamond featuring a hand-drilled hole inspires an investigation of the briolette cutting style and the history of drilling diamonds.
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Offers a systematic evaluation of rose cuts produced for various colored stones in the latter seventeenth century, based on the examination of rare artifacts that belonged to the archbishops and prince-electors of Trier and Cologne.
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A gem cutter’s thoughtful design enhances the natural color zoning in an 8.55 ct alexandrite.
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