Ruby, Mozambique (1.06 ct)
Origin & Origin of Rubies
For the formation of corundum, the special geological environment is necessary, in which there is an excess of aluminum with simultaneous poverty of silicon, otherwise, as is usually the case, no corundum but aluminosilicates such as kyanite and andalusite are formed. Corundum is aluminum oxide. Its color is caused by trace elements.
The fact that red corundum, i.e. ruby, is formed owes this anomaly to yet another element: chromium, which itself is present in the earth’s crust in only 0.02 percent by weight, must also be present at the same time and place. This proves the extreme rarity of rubies in the earth’s crust.
Rubies can sometimes be microscopically assigned to a country of origin. This is done by using the presence or absence, quantity and combination as well as shape of minerals, twin lamellae, rutile dust arrangement and color distribution. Likewise, healing cracks, which are the remnants of melting processes in corundum during genesis, can provide information about genesis, origin, and subsequent human-induced changes based on their appearance. More details about the stones afford laboratories.
Valuable gemstones for your investment
Via the marketplace of the German Gemstone House (DEH), part of the exclusive secondary market concept, customers can privately resell the colored gemstones they originally purchased from the DEH.
Every gemstone on the marketplace meets the strict quality criteria of the DEH and is carefully checked before sale. The gemstones are stored safely in the DEH or in the open bonded warehouse (OZL). Buyers benefit from certified reports from renowned laboratories (DSEF, Gübelin, SSEF) and a valuation report from a Chamber of Commerce expert. The entire sales process is accompanied professionally and reliably by the DEH.
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