Sorting a natural example from one produced in a lab is not always ... It is thought that the colour in red and pink diamonds is caused by a change in the structure of the crystal called plastic ...

Scientists said recently they have found the “missing ingredient” for pink diamonds, some of the world’s most expensive stones due their rarity and beauty, and the discovery could help find ...

“Argyle pink tender diamonds have outperformed all major equity markets over the past two decades, achieving double-digit price growth in that time,” points out Patrick Coppens, general ...

PERTH, Australia -- Rio Tinto's second Beyond Rare™ Tender: The Art Series 02 has delivered a strong result, reflecting the extraordinary rarity and unique provenance of the collection, together with ...

(IDEX Online) - A sale of "beyond rare" diamonds - primarily pink, red and violet stones from the Argyle mine - delivered ...