合成ダイヤモンドの特徴 (英語)
Presents a visual guide to the growth processes and major gemological spectroscopic features of synthetic diamonds.
Black Diamonds from Marange (Zimbabwe): A Result of Natural Irradiation and Graphite Inclusions
Characterizes a suite of 40 natural brown to black diamonds from this deposit so that they can be distinguished from suspected treated black diamonds.
Cultured Pearls from Lake Kasumigaura: Production and Gemological Characteristics
Examines Japanese “Kasumiga” freshwater cultured pearls, which grow in a variety of colors.
モンタナ州のYogo（ヨゴ）渓谷から産出されたサファイアの宝石学的な特徴 (英語)
A look at the mining and distinguishing characteristics of this naturally vibrant blue sapphire.
An Early Byzantine Engraved Almandine from the Garibpet Deposit, Telangana State, India: Evidence for Garnet Trade Along the Ancient Maritime Silk Road
Analyzes the chemical composition and inclusion characteristics of this ancient artifact.
Natural Blue and Black Diamonds, a Byzantine Garnet Intaglio, Yogo Sapphires, and “Kasumiga Pearls”
Natural-Color Blue, Gray, and Violet Diamonds: Allure of the Deep
Summarizes data collected on more than 15,000 natural blue/gray/violet diamonds examined by GIA during the last decade and examines the mechanisms that produce this color range.
Diamonds Help Solve the Enigma of Earth’s Deep Water
The first installment of G&G’s newest section explores how natural diamonds shed light on the mystery of water found in Earth’s deep mantle.
Summer 2018 G&G Publication Information
This document provides the publication information for Gems & Gemology
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