There is a lot of confusion between zircons, a mined mineral, and cubic zirconia, an inexpensive synthetic crystal. But jewelry designers know the difference. The ranks of independent designers who ...

Evidence of Earth's first continents — 4.3-billion-year-old "diamonds" — are actually just fragments of polishing grit, a new study finds. In 2007, an international team first reported discovering the ...

Zircon is a mineral that exists in nature from colorless to reddish-brown, yellow, green or blue. Zircon may also be transparent making its visual appearance similar to a diamond. Zircon is a common ...

Subscribe now to view details for this work, and gain access to over 18 million auction results. Purchase One-Day Pass ...