Research Article Search Results

Cutting Diffraction Gratings to Improve Dispersion (“Fire”) in Diamonds

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Suggested Reading on Rubies and Their Inclusions

Suggested Reading on Rubies and Their Inclusions

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Data Supplement

Compares the image quality provided by real-time microradiographic imaging (RTX) units fitted with two different detectors: an image intensifier (II) and a flat panel detector (FPD).

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Corundum with Spinel Corona from the Tan Huong–Truc Lau Area in Northern Vietnam

Explains the reactions responsible for the formation of a well-developed reaction rim of spinel that surrounds the corundum core in some specimens from this deposit.

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D-Color Natural IIa Diamond with Walstromite Inclusion

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Nephrite Bracelet with Filled Cavity

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Strong Pinkish Purple Freshwater Bead-Cultured Pearls

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Spectral Characteristics of Pinctada Mazatlanica and Pinctada Margaritifera Pearl Oyster Species

Examination of shells from on P. mazatlanica proves the similarities between that species and P. margaritifera.

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Coated Lawsonite Pseudomorphs Presented as Chromian Lawsonite

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Diagnostic Features and Heat Treatment of Kashmir Sapphires

Today, only by combining different gemological tests with years of practical experience, can a conclusive determination of the origin of a sapphire be made.

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What Have Diamond Ages Taught Us?

Diamond ages offer insight into continent evolution spanning billions of years.

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A Rare Ruby from Montana

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