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Search Results - Gemstones, May 2017

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Figure 1. (left) Inclusion consisting of a liquid phase with a vapour bubble. Figure 2. (right) Polariscope-revealed inclusion

Gemstones
Understanding inclusions: part 5 tourmaline

Always colourful, always durable; tourmaline is a jewellery-industry favourite. JUNE MACKENZIE reports. Read more »
Figure 1. (left) Corrosion tubes. Figure 2. (right) Lamellar twinning

Gemstones
Understanding inclusions: part 4 tanzanite

Compared to other gemstones, tanzanite is young. JUNE MACKENZIE discusses this popular gemstone that Tiffany & Co brought to market in the 1960s. Read more »

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Sunday, 24 March, 2019 01:54pm
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