Quartz 25.75 ct Brilliant!

 

IF - No Inclusions under 10x Loupe

VVS - Inclusions not visible to naked eye

VS - Barely see inclusion

SI - Slight Inclusion

I - Many Inclusions

I've indicated HYDROTHERMAL under treatment.  WHY: This is genuine Quartz, showing all the characteristics of quartz and was sold to me as a natural stone. However most experts I've consulted say that with stones this large, the possibility is 99.5% that its a synthetic, most likely produced by the hydrothermal method, resulting in stones that are identical to natural stones. Definitive testing would require sending it to a lab e.g. EGL in JHB which charges R275/ct (in this case R6000 plus). Also it is possible some of the tests would be destructive. Simply put: I can't (& the gemologists I 've spoken to wouldn't) put pen to paper certifying that its 100 % natural or synthetic, without lab certification. So I've indicated hydrothermal to denote the possibility. 

The weight, measurements, specific gravity (SG) and refractive index (RI), where applicable, of the stone(s) are measured and provided in a report to the buyer. The RI and SG are the 2 most important indicators of gem identity.

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