08-08-2020, 08:18 PM
(08-08-2020, 04:20 PM)Navaratna Wrote: There's also Star sapphires and star rubies which are pretty unique. Black Star sapphires really are something else. Here's an example of a famous enormous Star Sapphire https://en.m.wikipedia.org/wiki/Star_of_India_(gem)
I'm familiar with those. There's also star garnets, and another pattern in corundum called a "trapiche" that looks pretty cool.