A Sri Lankan gem company claims it has discovered the world's largest single natural blue sapphire, a 683-pound gemstone that it plans to auction after obtaining an official valuation. A 310 kilograms ...
Sapphire is a corundum gemstone that has meaning, properties, and uses. Corundum gemstones are the crystalline form of aluminum oxide with traces of iron, titanium, vanadium, and chromium. Sapphire is ...
Wait a minute, corundum is just a mineral, right? Yes, and being relatively common mineral found in all kinds of rocks (igneous, metamorphic and sedimentary) and very hard and nicely colored, it has ...
Neelam, or blue sapphire, is a mineral corundum linked to Saturn in Vedic astrology, believed to clear obstacles and alter destiny. While scientifically unproven, wearing this rare and expensive gem ...
JOHANNESBURG (miningweekly.com) – The inaugural auction of rough ruby and corundum mined at Aim-listed Gemfields’ 75%-owned Montepuez deposit, in Mozambique, has raised $33.5-million, taking the ...
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