Fall 2013 - Volume 49, Issue 3
Issue Overview
Show Filters
Diamond with Unusual Laser Manufacturing Remnant

An unusual laser manufacturing remnant, possibly once used to guide a gem cutter, was left behind in a clock-like shape.

Read More

Turquoise with Fingerprint Pattern

A fingerprint pattern, possibly left by human skin oils during the assembly process, is observed in natural turquoise beads.

Read More

Large Pinkish Brown CVD Synthetic Diamond

Report on the analysis of an unusually large CVD synthetic diamond, unique in that its Faint to Light pinkish brown color doesn’t appear to be the result of post-growth treatment.

Read More

Green Sapphire Filled with Glass

Analysis reveals blue lead glass filling in a sapphire that has an overall green bodycolor as a result of the filling’s combination with natural yellow color.

Read More

A Useful Technique to Confirm the Hydrophane Nature of Opal

Observing a water drop’s interaction with opal, as well as refractive index, can confirm a specimen’s hydrophane nature with less risk of breakage than total immersion.

Read More

Purple Jadeite Rock

Detected mineral components—jadeite and quartz, with reddish orange portions of cinnabar—shed light on a purple bead’s possible origin.

Read More

Diamond with High Concentration of Nickel

Analysis of Fancy Light greenish yellow diamond leads to detection of nickel, as well as an inclusion that gives a color-change effect.

Read More

Enormous South Sea Cultured Pearl Filled with Cultured Pearls

An unusually large cultured pearl was filled with multiple cultured pearls, perhaps after the emergence of an original single-bead nucleus.

Read More

Imitation Rainbow Moonstone Assemblage

Examination of an imitation rainbow moonstone assemblage containing plastic-coated gypsum.

Read More