Discover P.J. Joseph's blog, your guide to colored gemstones, diamonds, watches, jewelry, art, design, luxury hotels, food, travel, and more. Based in South Asia, P.J. is a gemstone analyst, writer, and responsible foodie featured on Al Jazeera, BBC, CNN, and CNBC. Disclosure: All images are digitally created for educational and illustrative purposes. Portions of the blog were human-written and refined with AI to support educational goals.
Friday, January 29, 2021
Black Star Sapphire With Dual Treatments
In Thailand, glass and dopping varnish is commonly used to treat black star sapphires for variety of reasons. Buyer beware. If in doubt, always consult a reputable gem testing laboratory.
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