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Unheated African Tourmaline 1.21 (bto121)

multi-green tourmaline without inclusions or treatments precision cut IGI report included
more images
Price:
$750.00
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1.21 Carat
Multicolored Blue-Green
Medium 30-50
Free of Inclusions

Details:

GRADING REPORT BTO121

  • Identification: Natural Unheated & Untreated Tourmaline
  • Carat: 1.21
  • Shape: Rectangular Baquette
  • Measures: 7.06x4.01x4.10 (millimeter)
  • Color Grade: Very Good
  • Tone: Medium 20-50
  • Color Zoning: None (see comment)
  • Clarity: Free of Inclusions
  • Cutting Grade: Very Good
    • Brilliancy: 75%
    • Depth: 58% (lengthwise) 
  • Origin: Mozambique
  • Treatment: None

Certificate No: To be delivered / Excluded in price / On request

Overall Grade: Very Good+

Comment: Almost colorless in one corner, then gradually moving to an apple green in the other corner, yet this would not be called colorzoning but a classic feature of some tourmaline; with red on the other side it is called watermelon, a rarity in the open market. Like many Mozambique tourmalines, when hit with direct light, they mirror back with a paraiba-like bright blue-green (as in the main image). That shining, captured in the main image is, however, visible only in specific angles, not continously, and is thus NOT a paraiba-like tourmaline. Pendant material for a slender person or full ringsize upto US-size eight. Under 'more images' note, how this tourmaline 'stands-up' on its side lengthwise (a sign of good cutting) and a second image were a different hue of green-blue prevails. Also a characteristic effect in tourmaline with its strong pleochroism.   

P.S. The unusual circumstances of this year, personal and in general, have so far hindered us from getting lab reports done, although I dare hope this will change by late May when I will visit Antwerp in person. The price here quoted is EXCLUDING our usual certificate. If you like to have a lab report for this garnet we need to add between $100 for a full IGI report. A $1,000 premium AIG report seems out of dimensions for a 'normal' almandine. But it too, would need a good deal extra time (currently over 12 weeks, sigh). That prices in this P.S. section differ is no lazy mistake but reflects the different pricing policies of the gem labs we use. Some calculate via weight, e.g. a 7 carat garnet is more expensive to test than a one carat, others labs go via pieces, when a small sapphire costs as much as a 10 carat gem.     

Discuss design options (with a hunted matched pair possible, yet NOT with the same color zoning, there will always be a difference.) 

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