The stony-iron meteorites known as pallasites are famed for the areas of yellowish green olivines they contain. Since the earliest description by Peter Simon Pallas in the 18th century, reference has ...

The gemological properties of synthetic green and lavender jadeite, which has been manufactured by the General Electric Company on an experimental basis, are summarized. The synthetic jadeites ...

This collection includes a palette of beautiful cultured pearls. Besides round golden white loose cultured pearls, there’s a strand of well-matched round whites and a strand of oval pastel colors. The ...