TANZANITE DIAMOND EARRING

A pair of 18K white gold earrings set with one deep blue tanzanite and one diamond on each piece.
 
GIA CERTIFIED ✔
 
Geological History
The Merelani Mining area beneath Mount Kilimanjaro is the only known source of Tanzanite in the world. This makes the stone considerably rarer than Diamonds and one with a finite resource.
 
This gorgeous pair of Tanzanites are some of a very few produced in a very small window of the earth's history. They were formed 500 million years ago. The host rock they formed in are late Proterozoic metasediments that were originally a series of sands and clays rich in organic matter with elevated levels of uranium, vanadium and aluminium rich minerals. These sediments were highly weathered and deposited in a lake. During and after the Pan-African tectono-thermal (mountain building) metamorphism a release and migration of hydrothermal fluids took place. The result was the deposition from these fluids of calcium, magnesium, vanadium, uranium, strontium and Zinc as well as heavy rare earth elements Co2 and SO3 along the Lelatema fault zone into chocolate tablet shaped boudin structures.
 
This rare pair of Tanzanites were amongst a number of crystals that formed in this structure as a result of the enormous geological events that formed the mighty Mount Kilimanjaro. They lay there for hundreds of millions of years until they were discovered by independent Tanzanite miners as they explored deep into the earth's surface. Five hundred million years after its conception these lovely, rare crystals finds themselves in human hands.
 
Cut by master cutters in our Tanzanian based lapidary on Goloindoi road in Arush, Tanzania and then brought to our main offices for photography and laser inscription. A journey of 550 million years has paused here.