Ruby Stones

Grobet ruby stones are pure, sintered crystals of synthetic ruby. Unlike India stones or grinding wheels, there are no clay or glass bonding materials used in the manufacturing process.

Do not confuse these pure ruby stones with cheap ruby colored aluminum oxide stones that are soft.

These genuine ruby stones are extremely hard and resistant to wear.

Available in medium and fine

For faster deburring and blending use with an Ultrasonic Handpiece.

Use dry or with stoning oil on steel alloys, carbide, glass, quartz, and porcelain.

Please click on a picture or description for more information about Grobet ruby stones.