Ade Advanced Optics GL500 Gemstone Refractometer with LED Light – Professional Digital Gem Tester for Jewelry, Gemstone, Ruby, Jadeite, Sapphire, Diamond, Moissanite, and Lab Use

Ade Advanced Optics GL500 Gemstone Refractometer with LED Light – Professional Digital Gem Tester for Jewelry, Gemstone, Ruby, Jadeite, Sapphire, Diamond, Moissanite, and Lab Use

• DURABLE ALL-METAL CONSTRUCTION – Built to last with a solid metal body, this gemstone refractometer ensures stability and long-term use for reliable results in professional gem testing and evaluation
• WIDE MEASUREMENT RANGE – Offers a refractive index range of 1.30 to 1.81, covering the values of most commonly tested gemstones. Essential for accurate identification of natural and synthetic stones
• LED ILLUMINATION WITH BATTERIES INCLUDED – Equipped with a built-in LED light source powered by 3 x 1.5V batteries (included), providing consistent lighting for clear readings in any lab or field environment
• INDUSTRY-STANDARD GEM TESTING TOOL – Regarded as one of the most essential instruments in gemology for verifying gem identity. Trusted by jewelers, gemologists, and appraisers worldwide for precise readings
• COMPLETE TESTING KIT INCLUDED – Comes with a polarizing filter for double refraction testing, as well as soft storage pouch to protect the unit and enhance portability during travel or on-site work