Untreated Australian Bolder Opal 4.75 (OPBP476)

4.75 Carat
Vivid Violet-Blue
Glitter-of-Rainbow-Colors
Opaque

GRADING REPORT OPBP476

- Identification: Natural Unheated & Untreated Bolder Opal
- Carat: 4.75
- Shape: One-sided Pear Cabochon
- Measures: 15.41x10.41x3.60 (millimeter)
- Body Color: Blue Front
- Play of Color: Good
- Pattern: Blue, violet zones with local rainbow glitter 
- Clarity: Opaque
- Cutting Grade: Very Good
  - Finish: Very Good
  - Depth: 34%
- Origin: Queensland, Australia

Treatment: None

Certificate No: DSEF OP 080045

Overall Grade: Very Good

Comment: Lightning ridge bolder opal in big ringsize, or mid-sized pendant. In addition to local rainbow glitter-of-color, this opal shimmers blue and violet just below the surface, an overall color attraction, like a cabochon sapphire or turquoise. 15x10mm will make a visible pendant. For a ring we need a big size plus protective settings, as with all opals. See the side-image, how the blue sits in a slim layer on the matrix. The finest colors of sky and sea and flowers captured in the beautiful wavy surface of one gem. The closer one looks the more details and distinct hue and tone of blue and violet you will discover. DSEF report guarantees the real deal in an ocean of fakes, buys rainforest protection, fights for animal rights, and come free of charge to your doorstep.