Suggested Reading on Rubies and Their Inclusions
Suggested Reading on Rubies and Their Inclusions
30-Year Marine Corps Veteran Fulfills Dream of Becoming a Field Gemologist
The rigors and often-harrowing conditions of gemology field expeditions are no match for 30-year Marine veteran with a love of gems.
True Colors of “Dalmatian Jasper”
Discusses the mineralogical composition and provenance of this spotted decorative gemstone.
Saltwater Pearls from the Pre- to Early Columbian Era: A Gemological and Radiocarbon Dating Study
Examines 85 saltwater natural pearls, reportedly harvested from the Caribbean islands off the coast of Venezuela during the early 16th century, to determine their age.
“Flower in the Rain” Inclusion in Sri Lankan Sapphire
A growth blockage/fluid inclusion combination in a blue sapphire from Sri Lanka resembles a bloom in a rainstorm.
Growth Tube Cluster in Sapphire
Surface-reaching growth tubes in a sapphire provide insight into the gem’s origin and treatment history.
Observations on HPHT-Grown Synthetic Diamonds: A Review
Summarizes statistical data and distinctive features of several thousand gem-quality HPHT synthetic diamonds examined by GIA from 2007 through 2016.
Photoluminescence Spectra of Emeralds from Colombia, Afghanistan, and Zambia
Compares PL spectroscopy data of 48 emerald samples from three countries to evaluate the usefulness of the technique in geographic origin determination.
Colombian Emerald Industry: Winds of Change
A firsthand look at Colombia’s emerald mines and the cutting and trading industry in Bogotá.
Update on Mozambique Ruby Mining and Trading
Current activity and production at various sites around Mozambique are reported.
Synthetic Star Sapphires and Rubies Produced by Wiede’s Carbidwerk, Freyung, Germany
Details the process used by Wiede’s Carbidwerk to produce star synthetic corundum from the mid-1950s through the 1970s.
Quarterly Crystal: Barite in Fluorite
A fluorite specimen hosts two eye-visible, prominent white barite inclusions.
Hematite in Quartz: “A Rose by Any Other Name”
A quartz cabochon hosts an unusual rose-shaped hematite inclusion.
Blue-Green Pyrope-Spessartine Garnet with High Vanadium
Garnets with a unique color and a previously unreported chemical composition are examined at GIA’s Carlsbad lab.
The “Montana Queen” Sapphire
A rough blue sapphire crystal from the Rock Creek deposit is heat treated and cut to become the largest known faceted blue Montana sapphire.
A Review of HPHT Synthetic Diamonds Grown forJewelry Use
An overview of the Fall 2017 Gems & Gemology content.
Book Review: Taffin: The Jewelry of James de Givenchy
Review of Taffin: The Jewelry of James de Givenchy, by James Taffin de Givenchy, Tobias Meyere, and Hamilton South.
.jpg "YMAL GIA Ed")
