Obsidian Ground Preforms 6-8"

Designed to finish with just one pass and some minimal edging and notching, these preforms are lens shaped with tapered ends and bevelled edges.

Choose from: Black, Mahogany, Midnight Lace, Silver Sheen, and Tiger Stripe Obsidian, or Dacite. 1 1/2 - 2" wide, 6 - 8" long, and 1/4 - 3/8" thick. $2.50/inch