DIFFERENTIATES between Earth Mined & Type IIa/CVD/HPHT Diamonds, Simulant & Moissanite! A portable diamond verification instrument for loose and mounted stones. Designed to separate natural diamonds from synthetic diamonds and diamond simulants with its double probe tip testing method by depressing the probe tip 90 degrees perpendicular to the table of the gemstone. If the test specimen is not moissanite, diamond, or synthetic diamond a reading of simulant is indicated. When the specimen is moissanite, diamond, or synthetic diamond the user will be prompted to perform test II. Size: 4.8 cm (W) x 18.1 cm (D) x 2.4 cm (H) Weight: 0.12 kg