Gemchrome EOS Diamond Colorimeter – Professional D–M Colour Grading

The Gemchrome EOS Diamond Colorimeter is a professional instrument designed for fast, repeatable colour grading of loose round diamonds across the D–M colour range.

Designed for diamonds from 0.10 to 20.00 ct, the EOS provides results in less than 20 seconds with a stated repeatability of ±0.50 colour grade. Its integrated centering system helps position the diamond correctly, while long-life LED illumination provides consistent lighting for measurement.

A large 7-inch touchscreen and user-friendly software make operation straightforward, with colour grading available according to GIA™, IGI™ and HRD™ scales. The instrument also evaluates fluorescence across 4 grades.

Built with a robust anodized aluminium construction, the Gemchrome EOS is designed for professional diamond dealers, cutters, jewellers and gemological environments requiring efficient and consistent diamond colour assessment.

Key Features

• Professional diamond colour grading instrument
  
• Grades diamonds across the D–M colour range
  
• Suitable for loose round diamonds
  
• Diamond size range: 0.10–20.00 ct
  
• Repeatability / accuracy: ±0.50 colour grade
  
• Measurement time: less than 20 seconds
  
• GIA™, IGI™ & HRD™ grading systems
  
• Fluorescence evaluation: 4 grades
  
• Suitable for diamonds with clarity above SI1
  
• Automatic self-calibration after extended inactivity
  
• Built-in diamond centering device
  
• Long-life LED illumination
  
• Approx. 1 million measurements without lighting maintenance
  
• Large 7-inch touchscreen
  
• Robust anodized aluminium construction
  

Specifications

• Brand: Gemchrome
  
• Model: EOS
  
• Product Type: Diamond Colorimeter
  
• Diamond Type: Loose round diamonds
  
• Diamond Size Range: 0.10–20.00 ct
  
• Colour Range: D–M
  
• Colour Grade Accuracy / Repeatability: ±0.50 grade
  
• Colour Grading Systems: GIA™, IGI™, HRD™
  
• Fluorescence: 4 grades
  
• Recommended Clarity: > SI1
  
• Measurement Time: Less than 20 seconds
  
• Calibration: Automatic self-calibration after extended inactivity
  
• Display: 7-inch touchscreen
  
• Lighting: Long-life LED
  
• LED Service Life: Approx. 1 million measurements
  
• Stone Positioning: Built-in centering device
  
• Construction: Anodized aluminium
  

Why Choose the Gemchrome EOS?

The Gemchrome EOS combines a wide 0.10–20.00 ct capacity, rapid measurement and automated colour assessment in a professional desktop instrument. The touchscreen interface, automatic calibration and built-in centering system make it particularly suitable for businesses that regularly need to grade, compare or sort loose round diamonds by colour.

Important: The Gemchrome EOS is specified for loose round diamonds within the stated parameters. Instrument measurements should be used according to the manufacturer's operating procedures and intended professional application.