Uncut Rough 4.87 carat cluster of colorless cubic crystals

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Ex Tax: $2,867.00

Uncut Rough Diamond (4.87 carat cluster of colorless cubic crystals) from Mbuji-Mayi, 300 km east of Tshikapa, Democratic Republic of the Congo
Minerals Species: Diamond (4.87 carat cluster of colorless cubic crystals).
Origin of mineral deposit: Mbuji-Mayi, 300 km east of Tshikapa, Democratic Republic of the Congo.
Description: Cluster of four intergrown lustrous colorless natural diamond crystals with fine patterns on the surfaces. The diamond crystals are cubic form, with concave crystal faces. Internally the diamond crystals are transparent with no visible inclusions. No damage.This uncut rough crystal of Diamond (4.87 carat cluster of colorless cubic crystals) from Mbuji-Mayi, 300 km east of Tshikapa, Democratic Republic of the Congo
Overall size of mineral specimen: 10x8x5 mm.
Size of individual crystals: 6-7 mm

Top quality, extremely high value, mine fresh, 100% natural rough (uncut) diamonds!

As such these diamonds are ready to set in a jewelry of your choice!

Yes, it is possible to mount without polishing. Our rough diamonds are hand-picked to ensure the smoothest surfaces and finest brilliance.

Perfect shapes promise a high weight retention and extra brilliance if cut and polished.


Geologists estimate that diamonds were born billion years ago when our planet earth was busy forming first continents!


Diamonds are traditionally used for healing and spiritual purpose. It is believed that diamonds may change one's life to a significant level. Diamonds are symbol of power. Wearing diamonds is a sacred art. People choose diamonds not only for luck, diamonds are also associated with Love and Romance!


Geologists estimates that diamonds were formed billion years ago when our planet earth was busy in forming its first continents. (The exact age of diamond is not known so far). Nature created diamonds from carbon by applying enormous pressure over a great period of time. You'll wonder who created such beautiful diamonds billion years ago! What is the purpose of their creation? There is history of evolution written on their surfaces, as mankind, are we ready to unveil the secret of the universe?


We at Robertson Precious Metals, provides you guarantee that this is mined fresh, 100% natural diamond and has never been treated or enhanced by any manner whatsoever. The diamond you are buying is same as the images shown in this listing page. This and every other diamond listed in our store is in full compliance with the rules and regulations set under the resolutions passed by 'UNITED NATIONS'. The shipment is fully insured for all destinations. Please note that rough diamond cannot be certified for its color and clarity. Even known laboratories such as GIA, HRD and IGI do not certify or grade rough diamond for its color and clarity. The color and clarity grades for this diamond are estimations based on our best knowledge and experience in trade.


You’ll get the same/exact diamond as per the description and the image(s) on this listing page. The Diamond will be packed in a traditional ‘diamond parcel’
Guarantee / Certification

    All gemstones are natural!
    We offer certification from AIGS for USD 260.00 (10-15 additional days)
    We also offer certification from the BGL lab for USD 130.00 only (5-10 days)

Size and Weight
Gems are always measured in Millimeter (mm)
    Compare mm Size with US coins
    Dimensions are given as length x width x depth, except for round stones which are diameter x depth
    Select gems by size, not by weight! Gem varieties vary in density, so carat weight is not a good indication of size
    Note: 1ct = 0.2g

Additional Quantities

    Every item is unique, so you can only order 1 of each item
    However, we often have similar or matching items. If so, we display them on the same gem detail page

Clarity Explained
    IF = Loupe Clean - Internally flawless; free of inclusions
    VVS = Almost Loupe Clean - Very, very slight inclusions; inclusions barely seen under 10x magnification
    VS = Eye Clean - Very slight inclusions; inclusions can be seen under 10x magnification
    SI = Slightly included - Small inclusions can be seen with the naked eye
    I1 = Included - Inclusions can be seen with the naked eye
    Transparent = A gemstone having the property of transmitting light without serious diffusion / may have rutile or other inclusions
    Translucent = Allowing light to pass through, but not transparent
    Opaque = Does not allow light to pass through

Return Policy

    All gems have a 30-day inspection period, which begins on the date of delivery. Gems may be returned for a full refund during this period.
    Please email us for return authorization code when returning a gem.
    For more details click here

No treatment means that the gemstone is completely free from all color, clarity and durability enhancements, such as heat-treatment, beryllium treatment, irradiation, fracture-filling, impregnation, stabilization or any other gemstone treatment. In other words, a non-treated gem has merely been mined and cut

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