Heavens-Piercing Drill

Here's a variant on the "Shuriken" design, written for paler materials. It has a very similar crown and a semi- barion pavilion, and is written specifically for paler materials like lavender spinel, although it is a flexible design. Works in materials from quartz to rutile (RI = 1.54 - 2.62) with no changes, but I prefer it in pale spinel.