Marble-hosted ruby deposits represent the most important source of colored gemstones from
Central and South East Asia. These deposits are located in the Himalayan mountain belt …

Madagascar is one of the most important gem-producing countries in the world, including
ruby and sapphires. Gem corundum deposits formed at different stages in the geological …

Oxygen isotopic compositions of rubies and sapphires from 106 deposits worldwide, as well
as heated natural corundum, have been measured in this study. Artificially heated …

Fluid inclusions have been studied in rubies from marble-hosted deposits in the Luc Yen
mining district, North Vietnam. Raman and Infrared spectroscopy combined with …

Marble-hosted ruby deposits occur in the Lo Gam tectonic zone along the northeastern flank
of the Day Nui Con Voi Range in the Red River Shear Zone, in the northern part of Vietnam …

The oxygen isotopic composition of gem corundum was measured from 22 deposits and
occurrences in Madagascar to provide a gemstone geological identification and …

Ruby growth in phlogopite-bearing marbles has been indirectly dated using the 40Ar/39Ar
laser stepwise heating technique on purified syngenetic phlogopite and other micas from …

Since 1983, gem-quality rubies have been recovered from the Luc Yen and Quy Chau
mining areas in northern Vietnam. Since 1991,'basaltic'-type blue-green-yellow ('BGY') …

Summary¶ Mong Hsu rubies of the “trapiche” type are sporadically seen in the gem market.
However, they have never been described in the field. The study of the nature of solid …

High failure rates of the current drug development process are driving exemplary changes
toward methodologies centered on human disease in-vitro modeling. Organoids are self …