Diopside – Natural, Faceted, Green, 4.08 ct

The trillion cut is a popular gemstone design that performs well optically. It's also an odd, 3-symmetry, design. Other odd symmetry designs can be used as rounds or for novelty cuts but face some limitations. Tashmarine diopside, 4.08-ct, trillion brilliant cut. © Dan Stair Custom Gemstones. Used with permission. ("Tashmarine" is a trademark of Columbia Gem House).

Article: Odd Symmetry Designs for Gemstones

Credit: Dan Stair Custom Gemstones