AS HARD AS A DIAMOND BECAUSE IT IS A DIAMOND. Not every finger longs to sparkle. Diamond and darkness converge in a bold new expression of love's lasting promise. The black collection is the result of decades of science, technology and art - driven to perfection by a relentless quest for the ultimate black diamond. Timeless and dark as the depth of the earth that forge diamond, ELYSIUM BLACK jewelry brings drama and desire together. Proudly Made In The U.S.A. Elysium Black diamond rings are available in 6.0Mm width sizes 3 to 9 (whole and half sizes); 7.0Mm - 8.0Mm width sizes 5 to 13.5 (whole and half sizes). Elysium rings are hypo-allergenic and may be customized with laser engraved designs. on the outside