Research Article Search Results

Analysis of a 5.03 ct HPHT-grown blue synthetic diamond, the largest ever examined by GIA.

A recent rush in Madagascar yields new sapphire production.

A parcel revealed to contain natural, treated, and synthetic diamonds reinforces the importance of identification.

Presents the underlying physics and methodology of this analytical technique, which has become an essential tool in identifying treated and synthetic diamonds.

Lesser-known gem materials are seen in pieces alongside a collection created as an artistic inheritance for future generations of jewelry fans.

Phase changes illustrate the temperature and pressure conditions in the fluid inclusion system of a Sri Lankan sapphire.

An unusual doublet consisting of two sections of natural emerald is examined the Tokyo lab.

A report on the color treatment process for these intensely greenish yellow to yellowish green cultured pearls and the techniques for identifying them.

Accompany GIA field gemologists on a true gemstone mining adventure in exotic Mogok, Myanmar. This legendary source has been called “The Valley of Rubies,” but also produces a variety of other gemstones.

Enter a world not well-known in the West—the world of the maharajas and their jewelry, coveted by the modern-day moguls of business, entertainment, and royalty. See the fantastic works of art made today in the form of enameled Kundan meena jewelry and the regal look of polki diamonds.