Pakistan gem safari

Written by Alain Darbellay GGGems


Continued from page 1
deposit of natural cherry topaz inrepparttar world. -------------------------------------------------- Emerald from Mingora,repparttar 109298 main city of Swat. The deposit discovered in 1958 was closured and monopolized byrepparttar 109299 government, it is what compelled certain inhabitants residing inrepparttar 109300 neighborhood to dig under their house in order to researchrepparttar 109301 prohibited treasure. TECTONIC CONTROL OVER EMERALD MINERALIZATION IN SWAT. It is inrepparttar 109302 Swat valley that Alexander of Macedon fought Emerald and chromian tourmaline occur in carbonate-talc/ and won some of his major battles before crossing over serpentine/chlorite rocks, carbonate-bearing talc schists, torepparttar 109303 plain of Pakistan. and associated quartz veins near Mingora, Charbagh, and Let us note thatrepparttar 109304 emerald was known for a long time Shangla. The rocks are altered ultramafics found in a in this valley, thanks to an analysis on a stone of a discontinuous belt of volcanic, volcano-sedimentary, and Gallo-Roman ear-ring, witch shown that this emerald sedimentary rocks that have undergone high P-low T originated in ofrepparttar 109305 mines located inrepparttar 109306 Swat valley. metamorphism. This thanks torepparttar 109307 measurement ofrepparttar 109308 report/ratio of

This is atrepparttar 109309 occasion of one of our visits inrepparttar 109310 valley, that some children tolled us that they found some fragments of emerald inrepparttar 109311 Swat river. concentration ofrepparttar 109312 isotopes 18O and 16O. Indeed,repparttar 109313 isotopic composition out of oxygen of this precious stone is dependent on that ofrepparttar 109314 rock where it crystallized. Central street of Mingora. ------------------------------------------------- Blue-green tourmaline from Kunar valley, Afghanistan. Nimak mendy, old Peshawar, onrepparttar 109315 road to Afghanistan. Mountains of Afghanistan. Alain talking with our Afghan friend Sarbaz. GGGEMS.COM

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Discovery of Pyrope Spessartite garnets ( Madagascar )

Written by Alain Darbellay GGGems


Continued from page 1
At this time startedrepparttar orange garnet's fever. The stone did not show almost any more change, its champagne-orange color atrepparttar 109297 day was simply reinforced in a vivid orange or for other elements in an orange-red under electric light. This type of garnet is a pyrope-spessartite also containing vanadium and chromium traces. Onrepparttar 109298 totality of Malaya extracted, a small part was pure, but much showed typical inclusions of this stone. Initially networks of rutile needles and strain patterns were often present, and inclusions of graphite accompanied them. Negative crystals and, quartz, apatite, monazite and zircon had been also invited duringrepparttar 109299 growth ofrepparttar 109300 precious malaya garnet. Hererepparttar 109301 first pyrope-spessartite cut in 1998. Realized in an arid landscape composed of bushes and cactus, this discovery remains exceptional by repparttar 109302 quality of its product and also byrepparttar 109303 fact that it wasrepparttar 109304 second deposit inrepparttar 109305 world to deliver this type of Malaya garnet.

Here, one ofrepparttar 109306 only intact garnets found inrepparttar 109307 occurrence. Its unusual stacking shape must be noticed. Refractive Index: 1.73 - 1.81 Chemical Composition: [Mg3 + Mn3]AL2(SIO4) Hardness: 7 - 7.5 Density: 3.65 - 4.20 Crystal Group: Cubic Above,repparttar 109308 only phlogopite mica found inrepparttar 109309 neighborhood ofrepparttar 109310 deposit at that time, it is still in its gangue. Of transparent quality, it shows a similar color to that of malaya garnets. Garnet data Madagascar Gem Safari Malaya garnet Catalog

Allrepparttar 109311 pictures on this site have been shot by gggems.com Alain Darbellay

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