Company profile

Established in 1995, Lindian supplies professional refractometers with consistent performance and ISO 9001 certified quality. For more information, please visit Refractometer.com.cn.

All products

Portable Gemstone Refractometer, Jewlery Refractometer

The RHG-181 Gemstone Refractometer is a portable optical instrument designed to measure refractive indices from 1.30 to 1.81, enabling fast identification of gemstone types, differentiation between natural, synthetic, and treated stones, and analysis of optical properties such as birefringence and crystal orientation—making it a practical tool for jewelers, gem traders, and inspection agencies. Specifications Measurement Range Resolution Dimensions Weight 1.30-1.81 0.01 30*70*130mm 0.4kg

10x Gem Magnifier for Gemstone Inspection, Jewelry Magnifying Glass

The RHGX Gem Magnifier is a precision optical instrument designed for detailed observation of gemstone inclusions, surface features, and treatment indicators, widely used in gem identification, appraisal, processing, and quality inspection. - Magnification Range: 10X–80X total magnification for detailed inspection at varying levels. - Field of View Diameters: φ18, φ15, φ6, φ5, φ4, φ3 mm for different magnification settings. - Dimensions / Weight: 28 × 18 × 36 cm; 6.1 kg – suitable for desktop lab or appraisal use.

Bench Top Gem Polarimeter, Gemstone Polariscope

The gem polariscope is a non-destructive optical tool used to identify gemstone authenticity, distinguish between isotropic and anisotropic materials, and analyze optical properties such as refraction type, axiality, and optical sign.

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