Corundum – Lab-made, Rough, Red
Flame fusion creates long, tear-shaped pieces of synthetic corundum. This sample, consisting of a mix of aluminum oxide and chromium, would have yielded a synthetic ruby. This piece, on display at the Natural History Museum in London, UK, was removed from the flame fusion process before completion. Photo by Aramgutang. Public Domain.
Article: What are Lab-Grown Sapphires?
Credit: Aramgutang
Gemstone | Corundum |
Natural or man made | Lab-made |
Gem State | Rough |
Color | Red, Green, Purple, White |
Transparency | Opaque |
Multi-color | more_than_3_colors |