Natural-Looking Inclusions in a Ramaura Synthetic Ruby
Milky clouds and flux inclusions in a synthetic ruby create a challenge for identification.
Metallic See-Through Backing on Omphacite Jade
An unusual effect created by the backing on a jade carving is observed in the Carlsbad laboratory.
Large Natural Diamonds with Asteriated Cloud Inclusions
Two natural diamonds containing cloud inclusions that resemble stars are examined in the Carlsbad laboratory.
Seed Features in an Akoya Keshi Pearl
Examination of an akoya keshi pearl in the Mumbai laboratory reveals rare seed features and an acicular structure.
Bicolor Chrysoberyl with Chrysoberyl and Alexandrite Zones
The Tokyo laboratory reports on a submitted stone composed of both chrysoberyl and alexandrite.
Calcite Pearl with Red X-Ray Fluorescence
A nacreous-looking calcite pearl exhibiting red X-ray fluorescence is documented for the first time at GIA.
Large Treated-Color CVD Laboratory-Grown Diamond Rings
Testing of five CVD laboratory-grown diamonds submitted to the New York laboratory reveals post-growth treatment to achieve fancy colors.
Large Tridacna Shell with a Blister Pearl and a Shell Blister
A large shell submitted to the Mumbai laboratory exhibits both a blister pearl and a shell blister.
A Large Multicolored Natural Blister Pearl
A large baroque-shaped blister pearl with a unique multicolored appearance is examined in the Mumbai laboratory.
Unique Moiré-Pattern Metallic Inclusion in Paraíba Tourmaline
An intriguing inclusion scene is analyzed in a Paraíba tourmaline from Brazil.