Summer 2010

DIAMONDS
Unusual facet arrangement produces scalloped appearance in diamond.

COLORED STONES AND ORGANIC MATERIALS
Chrysocolla chalcedony from Acari, Peru.
Recent finds of kunzite in Pala, California.
Natural pearls of the Pectinidae family: Review and origin of color.
More on ruby from Cabo Delgado, Mozambique.
Ruby, sapphire, and spinel mining in Vietnam: An update.
Sphene from northern Pakistan.
Spinel from Bawma, Myanmar.
Tsavorite and other green garnets reportedly from Afghanistan.

SYNTHETICS AND SIMULANTS
An unusual lab-grown garnet: Calcium niobium gallium garnet.
Glass imitations of emerald with straight zones.
“Nanogems”—A new man-made gem material.
Serpentine doublets, sold as pietersite, from Arizona.

TREATMENTS
A composite coral bangle.
Lead glass–filled ruby in antique jewelry.
Tanzanite and other gems set with colored adhesive.

CONFERENCE REPORTS
1st Italian Conference on Scientific Gemology.
Sinkankas Symposium 2010—Gem Feldspars.

MISCELLANEOUS
Gem news from Myanmar.

ANNOUNCEMENTS
Updated CIBJO Blue Books released.

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