See GIA CERTIFICATION as the details are registered.
I purchased it from a seller that was on eBay in about 2020.
An Unmounted Synthetic Sapphire
the oval mixed-cut stone, measuring11.94 x 10.00 x 6.52mm, stated to weigh 6.22cts.
Accompanied by GIA Certificate No:2225437495 dated May 18 2022
stating "Laboratory Grown Sapphire".
The demand for synthetic sapphires is very limited.
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