No Reserve Price Black, Multicolour Opal - 6.54 ct - International Gemological Institute (IGI)

02
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04
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19
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Current bid
€ 3
No reserve price
Purificacion Aquino Garcia
Expert
Selected by Purificacion Aquino Garcia

Holds a gemmology degree from IGE Madrid and an MBA from University of Santiago de Compostela.

Retail Estimate  € 900 - € 1,100
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Bidder 4551 €3
nlBidder 5315 €2
frBidder 9653 €1

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IGI certified opal, 6.54 carats total, oval cabochon-cut gemstone with play of colour, semi-translucent with a black base and multicolour tones, dimensions 20.57 x 11.49 x 5.78 mm, heat treated, cut grade Excellent, certificate 700597203, origin not stated.

AI-assisted summary

Description from the seller

"IGI Certified 6.54Carat Natural Opal
Certificate Number : 700597203
Color - Blue,Dominant Colors.Green,Orange & Purpul.
Shape - Oval
Cut - Cabochon
Dimensions - 20.57 x 11.49 x 5.78mm
Transparency -Semi-Transparent
Comments; Play of Color effect
Smoke-treated

Shipping 1 to 3 working days by FedEx

"IGI Certified 6.54Carat Natural Opal
Certificate Number : 700597203
Color - Blue,Dominant Colors.Green,Orange & Purpul.
Shape - Oval
Cut - Cabochon
Dimensions - 20.57 x 11.49 x 5.78mm
Transparency -Semi-Transparent
Comments; Play of Color effect
Smoke-treated

Shipping 1 to 3 working days by FedEx

Details

Lab report number
700597203
Gemstone type
Opal
Total carat weight
6.54
Gemstone colour
Black, Multicolour
Optical effect
Play of colour
Cut grade
Excellent
Transparency
Semi-translucent
Clarity grade
Eye clean
Treatment
Heat treatment
Origin as given on certificate
No origin given
Laboratory Report
International Gemological Institute (IGI)
Sealed by laboratory
No
Shape
Oval
Cutting style
Cabochon cut
ThailandVerified
764
Objects sold
100%
pro

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Catawiki always aims to offer you the best possible buying experience. Our experts virtually review and select every object in line with our submission guidelines. While we strive to provide a detailed description and photographs of each jewellery object, discrepancies or inaccuracies may occur. It is your responsibility to review all of the information provided about an object, including the condition and description, before placing an order. Sellers are responsible for the information, pictures and description provided, including the quality, quantity and nature of the jewelry supplied. A small imperfection that cannot be seen in the photo but is included in the description is not a non-conformity. A Lab Report is not a guarantee, valuation or appraisal regarding the articles described therein. A Lab Report contains only the characteristics of an article described after it has been graded, tested, examined, and analyzed using the techniques and equipment used at the time of the examination from that specific Lab. The results of any other examination performed on the article may differ depending when, how, by whom and with which grading standard the article is examined. In addition, any changes and improvements in techniques and equipment that may have occurred which may enable the examiner to detect, among other things, the use of processes for altering the characteristics of an article which use was previously undetectable, does not automatically mean the object does not conform to its description.

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