Its color varies from gray to brown or purple. Axinite is hard enough to be cut and used in jewelry that's highly resistant to scratches. It's not as durable as very hard gemstones like diamonds ...

“It’s not reddish brown, it’s not reddish purple, it’s not reddish ... Only about 30 percent of natural diamonds are considered gem-worthy, and among those, less than 1 percent are fancy ...

Diamonds can also come in black, blue, green, pink, red, purple, orange or yellow. Diamonds are a very strong gem. Its name derives from the Greek word "adamas" which means "invincible" or ...