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Ships within 48 hours · Estimated delivery Oct 1 - Oct 6
Stone Size (mm): 20x13
When set upper and lower limit value
A highly prized Conch Pearl
02 regardless of shape
Stone Size (mm): 18
GemLED Refractometer With M7 Docking Station Desktop Jewellery & Watch Multi-Functional Repair Tool with LED Lights Stone Size (mm): 20x13Innovative gemstone refractometer with built in LEDs for mains and battery operation. Refractometer contact liquid ND 1. 79 and polarization filter included. Refractive index: nD 1. 30 1. 81, scale graduation 0. 01 for an easy, direct and accurate reading Monochromatic illumination with powerful LEDs 589nm of the sodium D wavelength, arranged directly on the refraction element within the refractometer housing, for a sharp and high contrast image of
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