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Diamond vs topaz HRD Antwerp
HRD Detects Topaz Imitating Diamonds
HRD Antwerp has identified two stones that were believed to be diamonds as topaz, reflecting a trend to fool rough
News Jul 16, 2017 Rapaport News
9,381-carat topaz
Record Flawless Blue Topaz to Go on Show
A 9,381-carat topaz will go on display at a London museum next month. The world’s largest flawless blue topaz is scheduled
News Sep 28, 2016 Rapaport News
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