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
Alone Again (Naturally) production company Clay Cow Productions made a music video for Lazlo Bane's version of the song. Har Mar Superstar regularly covers the song in his live shows. Diana Krall and Michael Bublé - for the album "Wallflower" (2015).<br> Neil Diamond recorded it on his 2010 album of covers, "Dreams". Lee So-ra recorded it on her pop remake album "My One and Only Love". Lori Cullen recorded it on her 2006 album "Calling for Rain". Alone Again (Naturally) "Alone Again (Naturally)" is a song by Irish singer-songwriter Gilbert O'Sullivan. It was released in 1972 at the same time as (but not