Description

Item 1: Natural Opal (4.95 ct)
​This stone is shown in the first image, sealed in a plastic holder with its certificate.
​Certificate Number: cglm113312
​Weight: 4.95 carats (ct)
​Color: Play of color (the iridescent rainbow effect typical of precious opals)
​Shape & Cut: Oval cabochon cut
​Measurements: 16.80*12.20*6.20 { mm} (approximate)
​Gemological Properties: * Refractive Index (R.I.): 1.44 – 1.46
​Specific Gravity (S.G.): 1.98 – 2.20
​Item 2: Natural Opal (8.68 ct)
​This certificate is shown being held by a hand in the second image.
​Certificate Number: cglm113314
​Weight: 8.68 carats (ct)
​Color: Play of color
​Shape & Cut: Oval cabochon cut
​Measurements: 21.80*12.12*5.41\text{ mm} (approximate)
​Gemological Properties: * Refractive Index (R.I.): 1.44 – 1.46
​Specific Gravity (S.G.): 1.98 – 2.20
​Important Lab Disclaimers
​Both certificates include a standard disclaimer at the bottom: “Origin & enhancement not checked for the above specimen.” This means that while the lab has confirmed the stones are natural opals, they have not determined where the stones were mined (e.g., Australia or Ethiopia) or if they have undergone treatments like smoking or dyeing to improve their appearance.