Photographic & Video Logs of
TZC1366

Log of TZC1366 on completion of cutting
Cut Shape : Oval

TableViewImage

Video Log of TZC1366 on completion of cutting


Log of TZC1366 in its rough state

Rough Image

ID # TZC1366

Geological History

This gorgeous Tanzanite began its formation on the slopes of Mount Kilimanjaro about 550 million years ago. Heated ground waters circulated through rock fractures, dissolving minerals from the surrounding rocks and redepositing them in open spaces like fractures. Here as the rock folded with time, the heat and pressure grew to a level where it was possible for Tanzanite to form.

This remained constant for the many millions of years between that time and the time it was discovered by man. Any changes in the environment during this time would have meant that this Tanzanite would not have formed the heat and pressure and mix of chemicals must have stayed constant for the entire 550 million years. Hundreds of millions of years later it was chiseled from the crevice within which it had lain for so long and carried to the surface by miners in Block D of the Merelani Tanzanite mining area.

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.

Gemstone Reports And Certification

This gemstone has several reports prepared for it by a GIA Gemologist and these reports are shipped with it.

Gemstone Grading Certificate

This certificate is a full and detailed grading report utilizing the Gemological Institute of America Grading system.

 View the certificate for this gemstone

 Learn about the certificate

Personalized History and Registration Report

 View and Print the History Report

This report has been prepared by a GIA Gemologist at Lapigems Gem Company. All gemological tests were performed using current techniques and using current gemological equipment. The gemstone here reported is certified and this report, combined with the printed photo-certificate constitutes a thorough certification of this gemstone from mine to private owner.

Private Ownership Registration
Registered on www.lapigems.com worldwide gemstone registration service. Registration information only available by password to account holder.

If you purchase this gemstone, full ownership registration and this history information will be stored in your account as a personalized Gem History & Ownership Report

Quality Report

 
Color - 4
Clarity - 4
Cut - 4
Rarity - 4


How are these quality allocations reached?

Color Clarity Cut Rarity

Gemstone Grading Report

The gemstone here described has been identified as a natural gemstone and has the following description :

Description : Faceted African Tanzanite
Weight : 8.2 carats
Shape : Oval
GIA Color Grade : vB 6/5more info
GIA Clarity Grade : VVSmore info
Species : Zoisite
Variety : Tanzanite
Refractive Index : 1.691
Cause of Color : Vanadium
Specific Gravity : 3.35
Optic Character : DR Biaxial
Crystal System : Orthorhombic
Treatments : Heated
Country of Origin : Tanzania, East Africa

Mining Report

Date Mined : 12th February 2007
Mining Location : Mt. Kilimanjaro, Merelani District, Tanzania
Type of Source : Primary
Mining Method : Open Cast
Host Rock : Graphite & Quartz Gneisses
Chemical Composition of rough : Calcium Alluminium Silicate

Gemological Testing Methodology

Gemological Tests performed on this gemstone by a GIA Gemologist include but are not limited to:

Refractive Index, Specific Gravity, Pleochroism, Polariscope to ascertain Optic Character, Spectroscope to ascertain spectrum, Magnification with GIA Microscope using darkfield lighting, Chelsea Filter, Ultraviolet Flourescence.





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Lapigems Gem Company is a member of / staff hold qualifications from the following leading Gemological Organizations

 

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