Real Instruments Gem Refractometer 1.30–1.81 RI for Gemstone Testing

The Real Instruments Gem Refractometer (RHG-181) is a precision optical instrument designed for accurate refractive index (RI) measurement of gemstones and precious stones. With a 1.30–1.81 RI measuring range, it helps identify gemstones quickly and reliably for professional gemological analysis. Its durable ABS housing, high-quality optical components, and compact portable design make it suitable for jewelry stores, gemstone laboratories, educational institutes, and quality inspection applications.

Learn more in our blog:

• 10 Industries That Use Refractometers for Quality Control in 2026

Key Features

• Refractive Index (RI) measurement range 1.30–1.81
• High-precision gemstone identification
• Premium optical viewing system
• Durable ABS body construction
• Compact and portable design
• Fast and accurate gemstone testing
• Clear optical scale for easy reading
• Suitable for professional and laboratory use
• Low maintenance operation
• Reliable and repeatable measurement results

Applications

• Gemstone Identification
• Jewelry Manufacturing
• Jewelry Retail Stores
• Gemological Laboratories
• Diamond & Precious Stone Inspection
• Gold & Silver Jewelry Testing
• Educational Institutes
• Quality Control Laboratories
• Gem Dealers & Traders
• Research Applications

Specifications

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