Bort Gemstone: Properties, Meanings, Value & More | Gem Rock Auctions
RED FANCY COLORS - MID House of Diamonds
Bort diamond | PriceScope
Identity Help : Diamond??
Bort Gemstone: Properties, Meanings, Value & More | Gem Rock Auctions
TIL that diamond, despite being the hardest material known, will shatter if hit with a hammer. Hardness means resistance to scratching; toughness is a different property. : r/todayilearned