The way the cabochons are cut along with parallel tube-like inclusions could have caused double chatoyancy. Many thanks to Gems & Gemology for sharing the info.
Showing posts with label Phenomenal Gemstones. Show all posts
Showing posts with label Phenomenal Gemstones. Show all posts
Monday, May 27, 2024
Saturday, May 25, 2024
An Exceptional Cat’s-Eye Emerald
A colored stone storyteller. Many thanks to Gems & Gemology for the insightful story.
Tuesday, August 15, 2023
Star Aquamarine
Take a look as the asterism (6-ray star-like) in aquamarine which I think is quite rare. Many thanks to Jessa Rizo of GIA Carlsbad for the report.
Saturday, February 04, 2023
Tuesday, September 06, 2022
Three-Rayed Asterism In Quartz
The multi-star phenomenon could be caused by structural features or inclusions. The way the stone was cut could also be a factor.
Friday, June 10, 2022
Star Topaz From Vietnam
The uneven distribution of inclusions explains why some rays became blurred or vanished while others were continuous and sharp. But still it was intriguing to observe the rare phenomenal optical effect.
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