I have a 0.75ct London blue Sapphire -Unheated.
7.7mm x 4mm x 2mm with a Mohs hardness rating of 9 out of 10, this high luster sapphire is perfect for setting. Sourced from Thailand.
I brought the the sapphire from a auction.
An Unmounted & Unheated 0.75ct Sapphire,
the elongated step-cut stone of "London blue" color, of Thailand origin,
dimensions: 7.7mm x 4mm x 2mm