Black diamond pebble ringOrganic, imperfect round pebble ring is made of 10K yellow gold and a black diamond. A lovely simple piece perfect wearing alone or as stacking ring. Handmade with love in our studio, made to last for a very long time. Made of 10K solid yellow gold. 1. 2 mm band thickness. Round pebble measures approximately 4. 5 5 mm and 3 mm thickness. Size may vary slightly as they are handmade. 1 x Black diamond. VS quality. Total 0. 03 ct (approximately 2 mm).