Synthetic diamond "nanocrystalline" and "microcrystalline" diamond, respectively. Synthetic diamond is the hardest known material, where hardness is defined as resistance to indentation. The hardness of synthetic diamond depends on its purity, crystalline perfection and orientation: hardness is higher for flawless, pure crystals oriented to the <nowiki>[</nowiki>111<nowiki>]</nowiki> direction (along the longest diagonal of the cubic diamond lattice). Nanocrystalline diamond produced through CVD diamond growth can have a hardness ranging from 30% to 75% of that of single crystal diamond, and the hardness can be controlled for specific applications. Some synthetic single-crystal diamonds and HPHT nanocrystalline diamonds (see hyperdiamond) are harder than any known
What Comes Naturally with chart success. What Comes Naturally What Comes Naturally is the tenth studio album by Scottish-born singer Sheena Easton, released in 1991 through MCA Records. This album includes Easton’s final American Top 40 hit to date, "What Comes Naturally", which remained on the pop chart for 10 weeks. Other singles released were "You Can Swing It" and "To Anyone", both which failed to chart. The album charted in the United States at number 90. Easton is the co-writer on three tracks on the album. Easton is one of the few white artists to adopt the new jack swing sound from