The rubies from Zahamena share obvious similarities with those from Andilamena, such as their inclusions (mainly zircon and rutile crystals associated with rutile needles) and trace-element …

Aug 15, 2019 · Muscovite inclusions are occasionally encountered in rubies from Madagascar (figure 48) as well as amphibole, which may generally have a distinctive morphology with …

Suddenly Madagascar was not just on the ruby and sapphire map, but the center of the corundum universe. Since then, a glittering array of other occurrences of ruby and sapphire have been …

Aug 7, 2017 · Following the charts for the micro-features of emerald and sapphire—published in Winter 2016 and Summer 2017, respectively—this chart on ruby rounds out G&G’s series on …

Perhaps the most distinctive inclusion feature of these new rubies from Madagascar is the dark red to black rods of what appears to be primary rutile. Also note the zoned cloud of exsolved …

May 5, 2024 · For instance, Madagascar ruby runs a similar color spectrum to Mozambique: pinkish-red to orangy-red to red. Pigeon blood and deep red stones can be found, with some …

For over a decade Madagascar has been mining rubies and sapphires in a corundum equivalent of the gold rush. These rubies have good clarity but frequently have undesirable color zoning …

Since 2012, a new gem find near Didy (Madagscar) has produced some sapphires and rubies of outstanding size and quality (Pardieu et al. 2012, Peretti and Hahn 2012). This material …

Sep 1, 2008 · Mineral inclusions in ruby consist of Mg-rich phlogopite, rutile with some lamellar exolutions of ilmenite, zircon, albite, pyroxene, garnet, and Cr-bearing spinel. The trace …

Ruby, sapphire, emerald, tourmaline, and garnet are well-known gemstones, but the list of exquisite stones extends far beyond these. Today, we’ll highlight a selection of Madagascar …