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Gem Silica, a greenish-blue variety of chalcedony, is gaining momentum in Asia, especially among Chinese buyers.
Market uncertainties have not affected the value of rare and high-quality gems, with many collectors continuously looking for exceptional stones to further enrich their treasure troves. Among these investment gems, an alluring variety of chalcedony called Gem Silica – also traded as Taiwan sapphires – has become more popular especially among Chinese buyers over the years.
According to Yu Chung-ta of high-end gem dealer Chia Ta Jewellery Co Ltd, these so-called Taiwan sapphires have always been favoured by Chinese collectors who are partial to materials with an icy appearance that resemble top-quality jadeite. "With trendy and fashionable designs, we see tremendous...
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