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The article presents abstracts on instruments and techniques in gemology which include the application and development of digital image processing in gemmology, the use of cameras and computers in photographing jewelry and the use of digital combination photography in improving images of microscopic minerals.

The article presents abstracts on gems which include a description of the three sources of high-quality aquamarine from Minas Gerais, Brazil, an analysis of the chemical composition of nephrites from China and a comparison of mechanical mining and traditional mining in Sri Lanka.

The article presents abstracts on synthetic and simulant gems which include a description of bead materials, a discussion of gemmological characteristics and identification of a kind of dyed red coral imitation and a discussion of polymerization recycling of wasted turquoise.

The article presents abstracts on gemstones which include the determination and distribution characteristics of trace rare earth elements in pearls using inductively coupled plasma mass spectrometry (ICP-MS), assessment of granitic pegmatites and a description of pearls from the lion's paw scallop.

The article focuses on a test conducted to 21 samples of black-and-white diamond jewelry using Fourier transform infrared (FTIR) and Raman spectroscopy. It is said that about 10 of the jewelry samples were found to have black synthetic moissanite. Raman spectroscopy revealed that the inclusions in black synthetic moissanite were determined as crystalline silicon. The research "Synthetic Moissanite: A New Diamond Institute" by K. Nassau et al. noted that such moissanites were not developed through a so-called seeded sublimation process.

The article presents abstracts on jewelry history which include a description of the characters of gemstones from Liangzhuang King's tomb in Ming Dynasty in Zhongxiang, Hubei Province, China and an exploration of Western lapidary tradition in geological literature.

The article presents abstracts on gem-related treatments which include the filling of fractured rubies with glass-forming additives, identification of treated chicken-blood stones and imitations and a description of three dimensional fluorescence spectra representation of natural and treated amber.

An abstract of the article "Pt Alloy Materials for Jewelry and Ornaments," by Y. Ning is presented.

The article presents abstracts on gems which include a description of a valuation model for cut diamonds, presentation of a dataset for conflict diamonds and a study on disease status of gem worker's silicosis.

The article presents abstracts on topics about gems which include the application of geochemical ratios for delineating gem-bearing sites, the distribution of microelements in Pinctada martensii and its manual nucleus inserted pearl layer, and the impact of supergene conditions on fossil ivory quality.