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
Crystal Head Vodka Crystal Head Vodka Crystal Head Vodka is a brand of vodka manufactured by Globefill Inc. in Newfoundland and Labrador, Canada. It was conceived and founded by actor Dan Aykroyd and artist John Alexander in 2007. The vodka is quadruple-distilled and seven times filtered, with the final 3 filtrations through Herkimer diamond crystals, which are actually a type of double-terminated quartz rather than diamond. The Crystal Skull bottle was designed by artist John Alexander and is manufactured by Milan-based glass-manufacturer Bruni Glass. Aykroyd and Alexander first conceived of the idea for Crystal Head Vodka in 2007. Due to the lack of