Photographic & Video Logs of
TSVC859

Log of TSVC859 on completion of cutting
Cut Shape : Oval

TableViewImage

Log of TSVC859 in its rough state

Rough Image

ID # TSVC859

Geological History

In a lion-infested, dry area of Africa, amongst the Taita Hills of Kenya lies the place where Tsavorite was discovered and first mined. The basement system of rocks within which Tsavorite forms has been dated at between 800 million years and 1.2 billion years old. Tsavorite formed sometime during this time due to a process called “metamorphism”.

As magma pushed its way up through the existing rock the contact between the invading magma and the older rock caused a change to occur. The intense heat (as high as, and exceeding 750 degrees centigrade (about 1,530 degrees Fahrenheit) made the nearby minerals recrystallize into minerals stable at the higher temperature. This Tsavorite was one of these.

Millions of years later, as miners chiseled away at the mine face in the Wandani mining area they came across a “potato” or gem pocket. They chiseled it open and inside was a concentration of intense green gem quality Tsavorite. This was carefully clipped away from the host rock and collected into a “parcel” which was taken to Nairobi. Here, in the Lapigems offices they were identified as fine Tsavorite crystals using sophisticated gemological equipment. They were bought, sorted and then “knocked” (a process using fine gem tools) in order to remove heavily included sections. Once this process was complete, the now clean crystals were then examined and cut. Cutting is a long and highly skilled process and our master cutters have over 30 years of experience each.

This Tsavorite was one of the crystals purchased from this fine parcel and what you see before you today is several billion years old and a true gift of nature.

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 - 3.5


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 Tsavorite
Weight : 2.43 carats
Shape : Oval
GIA Color Grade : yG 5/5more info
GIA Clarity Grade : VVSmore info
Species : Grossularite Garnet
Variety : Tsavorite
Refractive Index : 1.743
Cause of Color : Vanadium
Specific Gravity : 3.61
Optic Character : SR
Crystal System : Cubic / Isometric
Treatments : None
Country of Origin : Kenya, East Africa

Mining Report

Date Mined : 28th January 2007
Mining Location : Tsavo, Taita District, Kenya
Type of Source : Primary
Mining Method : Open Cast
Host Rock : Graphite Gneiss / Crystalline limestone
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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