Thumbnail, 1.4 x 1.1 x 1.0 cm, 15.58 ct
South Africa

A very fine, textbook Diamond octahedron, weighing in at 15.58 carats. The crystal has edges up to 1.4 cm. When even minimally backlit, you can see zones of gemminess within the crystal. A choice Diamond specimen for the shape and size in this price range. Note the sharp patterns shown in mirror-reflections, which helped us illustrate the classic octohedral shape here.