From what I've seen they use bloodstone and Krobo powder glass.

He made a deal with a woman for some bloodstone, and you helped.

Still clutching the bloodstone, she motioned for two of the slaves to follow.

After glancing at Everlyn for permission, Khallayne reached to pick up the bloodstone.

This portion of the desert was rich in agates and numerous specimens of bloodstone.

Birthstone rings, too: garnet, amethyst, bloodstone, topaz, tourmaline; rings with ruby and emerald chips.

She crossed to the hearth and took down the bloodstone.

The candy is a success and Jack is going to have his bloodstone fob.

Large masses of exquisite bloodstone, the size of a man's head, were exceedingly numerous.

So, she ruins Mac's day, gets the bloodstone in exchange, end of story-niceand neat.

They needed bloodstone, and I had the only stuff in town that was pure enough!

A bloodstone pendant rested below her creamy throat.

The bloodstone he'd taken from Everlyn's neck.

Other stones you might find are the quartz gems: rose quartz, amethyst, rock crystal, agate, jasper, bloodstone.

Skirt comes in asking for bloodstone.

By the bloodstone that is my birthright, I'll keep my oath until the going down of one more sun.