This technique is usually applied to brownish or light yellow diamonds of relatively small size. The New York lab recently tested a very large yellow diamond that had been artificially irradiated.

The spectral features observed in this large diamond are rarely encountered in natural diamonds ... though the previous grade was Fancy brownish greenish yellow. This significant improvement in color ...

Jean Schlumberger left an indelible mark on creative codes of Tiffany & Co, marrying fantasy with the finest diamonds and ...

“We’re also seeing really substantial necklaces that include rough diamonds. This past week, (American actress) Zoe Saldana wore a very big necklace with lots of green and brown and yellow ...