Birthstones · Month 7 of 12
July Birthstone: Ruby
July’s stone is ruby. It is cut and moving in the Collection.
Ruby is corundum coloured red by chromium. Burmese stones carry the red the trade still measures every other ruby against.
The Optics
Chromium impurities in corundum give ruby its red and its telltale fluorescence under long-wave light.
One-time payment. All 15 stones on any device, yours permanently. Stones still being cut arrive here at no extra cost. The Quiz is free and asks for nothing.
See the stone on its own: Ruby. The same mineral in blue is Sapphire.