Diamonds might be forever but that doesn't stop them being bought and sold. One stone thought to have once belonged to Marie ...

An analysis of a 700-year-old ring reveals a unique reddish-purple sapphire set in 18-karat gold with a lion decoration.

Tired of office gossip and negativity? The article suggests using high vibrational crystals to create a more peaceful ...

Corundum crystals are pink, purple to red, and blue; colorless sapphire coexists with ruby, ... chalcedony, jade, and fluorite (figure 18). Figure 18. Common misspellings in the Luc Yen gem market ...

Purple lines represent H–H bonds with the distance shorter than 1.5 Å. A longer H–H distance was employed to account for analytical errors in calculating these rings. ( D and E ) Snapshots of atomic ...