We live with a compulsion to leave behind a legacy. The evidence of our existence sometimes stays and sometimes fades: a ...

A relatively new production of red corundum, reportedly from Bangkok, has been offered for sale in recent years. Although the producers claimed that these stones were red diffusion-treated corundum (i ...

The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But ...

Diamonds have long been the ultimate symbol of love and commitment, their sparkling brilliance forever linked to life’s most emotional moments. Thanks to decades of marketing genius—most ...

Your first diamond purchase is a moment you never forget. Whether it’s a pair of diamond earrings or an engagement ring, these jewelry pieces are designed to last and often mark a special occasion.

Both rubies and emeralds are minerals, which is a type of rock with a consistent chemical composition and a highly ordered ...

One feature of compounds made with transition metals is their intense colour. There are many examples in nature, including ...

Diamond, often celebrated for its unmatched hardness and transparency, has emerged as an exceptional material for high-power electronics and next-generation quantum optics. Diamond can be ...

This study provides detailed mining and gemological information on the Jegdalek deposit, in east-central Afghanistan, which is hosted by elongate beds of corundum-bearing marble. Some facet-grade ruby ...