Dear group members,
I have bought a Ruby in Afghanistan. Inside of this Ruby is a unknown animal, a fossil. Maybe million of years old unknown animal.
Can anybody help here?
Is this Ruby for a museum?!? Should I sell it?!? Would could be a tight price.
It is around 100 carat.
Thank you for your help
rubies and fossils, and for that matter any sedimentary rock, cannot co-exist. the temperature and pressure conditions that create rubies also create moderate to high grade metamorphic rocks, which would be the groundmass that the rubies are embedded in. Metamorphism will destroy any presisiting fossils or sedimentary rocks present, turning them into metamorphic rocks. the transition causes recrystallization of minerals present in sedimentary rock which contain the fossils. This will remove all trace of fossils and sedimentary minerals. High grade metamorphism in the trans himalayan mountain belt, those mountains extending from Iran thru Southeast Asia were created by the collision of the Indian plate with the Asian continent…Very high pressures and temperatures were created by the collision that also thrust up the mountains, including the Himalayas … the process is still ongoing with intense compression and heating of rocks, with the Himalayas continuing to be thrust upward at the present time. Rubies from Myanmar are found in marbles with a high aluminum content from clays…the limestone and clays were metamorphosed into marbles bearing rubies…the ground mass that your rubies are embedded in appear to be a felsic metamorphic rock, however, the parental rock had to contain an excess of aluminum for rubies to form…rarely are rubies found in igneous rocks. there will definitely be no fossils in igneous rocks… rocks that contain corundum that are igneous in origin include peraluminous syenites and lamprophyres… the rocks have to be deficient in silica and low in iron also, for sapphire and ruby coloration… although within the latter they may have been brought up as phenocrysts from deeper within the earth.
correction: phenocrysts should be xenoliths