Prismatic Rutile in Quartz
A rock crystal quartz displayed a large, well-formed rutile crystal inclusion under the table.
Second World Emerald Symposium
Important topics such as sustainability, blockchain, nanotechnology, and traceability were discussed at the second World Emerald Symposium held in Bogotá.
Emeralds Filled with Epoxy Resin: DiamondView Observations
“Blue flashes” seen with the DiamondView help to analyze the quantity and variety of emerald-filling substances.
GSA 2018 Report
Presenters reported on a broad range of research topics at the annual meeting of the Geological Society of America in Indianapolis.
GIA Researchers Look Inside Black Diamonds
Black diamonds are striking in jewelry. GIA researchers report on the unique properties used to identify black diamonds and the potential treatments.
Sulfur isotopes in diamonds reveal differences in continental construction
Smit K.V., Shirey S.B., Hauri E.H., Stern R.A. (2019) Sulfur isotopes in diamonds reveal differences in continental construction. Science, Vol. 364, No. 6438, pp. 383-385.
《宝石与宝石学》(Gems & Gemology)2018 年冬季刊：粉红色至红色钻石和宝石级水铝石的颜色成因、琥珀宫的神秘与辉煌以及斑珠母贝产"Pipi"珍珠的宝石学特征
《宝石与宝石学》2018 年冬季刊摘要。
Book Review: Narrative Jewelry: Tales from the Toolbox
Review of Narrative Jewelry: Tales from the Toolbox by Mark Fenn.
Evaluating mechanisms for eclogitic diamond growth: An example from Zimmi Neoproterozoic diamonds
Smit K.V., Stachel T., Luth R.W., Stern R.A. (2019) Evaluating mechanisms for eclogitic diamond growth: An example from Zimmi Neoproterozoic diamonds (West African craton). Chemical Geology, Vol. 520, pp. 21-32.
Reply to: Evidence for two blue (type IIb) diamond populations
Smith E.M., Shirey S.B., Richardson S.H., Nestola F., Bullock E.S., Wang J.H., Wang W. (2019) Reply to: Evidence for two blue (type IIb) diamond populations. Nature, Vol. 570, pp. E28-E29.
A pearl identification challenge
Sturman N., Otter L.M., Homkrajae A., Manustrong A., Nilpetploy N., Lawanwong K., Kessrapong P., Jochum K.P., Stoll B., Götz H., Jacob D.E. (2019) A pearl identification challenge. Gems & Gemology, Vol. 55, No. 2, pp. 229-243.
A new method for determining gem tourmaline species by LA-ICP-MS
Sun Z.Y., Palke A.C., Breeding C.M., Dutrow B.L. (2019) A new method for determining gem tourmaline species by LA-ICP-MS. Gems & Gemology, Vol. 55, No. 1, pp. 2-17.
Geographic origin determination of alexandrite
Sun Z.Y., Palke A.C., Muyal J., DeGhionno D., McClure S.F. (2019) Geographic origin determination of alexandrite. Gems & Gemology, Vol. 55, No. 4, pp. 660-681.
systematics of fluid-rich ‘fibrous’ diamonds
Timmermann S., Yeow H.L., Honda M., Howell D., Jaques A.L., Krebs M.Y., Woodland S., Pearson G.D., Avila J.N., Ireland T.R. (2019) U-Th/He systematics of fluid-rich ‘fibrous’ diamonds – Evidence for pre- and syn-kimberlite eruption ages. Chemical Geology, Vol 515, pp. 22-36.
Season’s Sales: US Up 4% to 5%, But China Continues to Lag
The U.S. holiday season saw strong sales, but China continues to struggle. Plus: diamond market report and lab-grown diamond sales.
Land of origins: A gemological expedition to Ethiopia
Vertriest W., Girma D., Wongrawang P., Aitkarnsakul U., Schumacher K. (2019) Land of origins: A gemological expedition to Ethiopia. Gems & Gemology, Vol. 55, No. 1, pp. 72-88.
Field gemology: Building a research collection
Vertriest W., Palke A.C., Renfro N.D. (2019) Field gemology: Building a research collection and understanding the development of gem deposits. Gems & Gemology, Vol. 55, No. 4, pp. 490-511.
A decade of ruby from Mozambique
Vertriest W., Saeseaw S. (2019) A decade of ruby from Mozambique: A review. Gems & Gemology, Vol. 55, No. 2, pp. 162-183.
Fancy Colors, History Ruled 2018 Auctions
World-class fancy colored diamonds and truly historic jewels highlighted the 2018 auctions, but total jewelry sales were down from 2017.
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