Zirconium dioxide jewellery. Like diamond, cubic zirconia has a cubic crystal structure and a high index of refraction. Visually discerning a good quality cubic zirconia gem from a diamond is difficult, and most jewellers will have a thermal conductivity tester to identify cubic zirconia by its low thermal conductivity (diamond is a very good thermal conductor). This state of zirconia is commonly called "cubic zirconia", "CZ", or "zircon" by jewellers, but the last name is not chemically accurate. Zircon is actually the mineral name for naturally occurring zirconium silicate (ZrSiO). Zirconium dioxide Zirconium dioxide (), sometimes known as zirconia (not to be
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