Antique Jewellery Guide | Berganza

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jewellery terms glossary


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A glossary of jewellery terms


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A. AUGIS   l    A. W. CROSBEE & CO   l    ABRAHAM MEYER BLANCKENSEE   l    AHRONSBERG BROTHERS   l    ALABASTER & WILSON   l    ALBERT CHAIN   l    ALBERT CHAMBIN   l    ALBERT SYDENHAM   l    ALEXANDER BROTHERS LTD   l    ALEXANDRITE   l    ALFRED MENU   l    AMBER   l    AMETHYST   l    ANCHOR CHAIN   l    ANDRÉ VASSORT   l    ANTIQUE   l    AQUAMARINE   l    ART DECO   l    ART MODERN/ RETRO   l    ART NOUVEAU   l    ARTHUS-BERTRAND   l    ARTS & CRAFTS MOVEMENT   l    ASSCHER BROTHERS   l    ASSCHER CUT   l    ASTERISM   l    ATKIN BROTHERS   l    AUBÉ   l    AUDEMARS PIGUET   l    AUGUSTE PEYROULA   l   

ASTERISM

This is an optical effect seen in gemtones cut en cabochon. This is caused by needle like inclusions that form a cross. It is often a six-pointed star which is produced, but there can be more or less points. This effect is often more visible under a bright direct light source, e.g. torch. Asterism can be seen in sapphires, rubies, rose quartz, diopside and garnet.



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Updated 5/12/2022 at 7:51PM

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