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18.78 Ct. Boulder Opal

18.78 Ct. Boulder Opal

1 was available / New
Indicative market price: R2,650


Joined 10 Mar 2007
Pretoria / Tshwane
bidorbuy ID: 63482208


 18.78 Ct. Boulder Opal


 Product ID BOP10046
 Gemstone Type Boulder Opal
 Quantity 1
 Weight 18.78 Ct.
 Clarity Opaque
 Colour Multi Colour
 Shape Oval
 Cut Cabochon
 Origin Australia
 Treatment None
 Dimensions (w x l x d) 17.33 x 21.94 x 6.12
 Mohs 5½ - 6½
 Refractive Index (RI) 1.37 - 1.52
 One of the top two most valuable class of opal.
 Laboratory  Report No See warranty and guarantee
 Estimated Market Price R 2 650.00
 Due to the difference in calibration of weighing and measuring instruments, all measurements must be considered as approximates only.










We use a microscopic photography system. The actual gem is smaller than the above images. Many inclusions shown are not visible to the naked eye. The pictures shown are of the gem you will receive.



  • Gemstone type warranty
  • Money back guarantee
  • Most competitive prices
  • Natural gemstones
  • No restocking fee
  • No combination fee
  • Verified seller


 IF VVS1 - VVS2 VS1 - VS2 SI1 - SI2 I1 - I3 OPAQUE
 Internally Flawless Very, Very Slight Inclusions Very Slight Inclusions Slight Inclusions Included Does not allow light to pass through it.

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Warranty & Guarantee:

Warranty Offered Warranty Type: Dealer

Gemstone type is as specified.

Money Back Guarantee Offered Money-Back Guarantee:

7 Days: All purchases have a 7-day inspection period. Please email us with all the details before returning your purchase. Shipping costs are not refundable, and are for your own account. Please note that items must be returned in their original condition.

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