Diamond Tester – Thermal Conductivity Gemstone Testing Tool for Diamonds & Jewelry Verification

Verify gemstones with confidence using this Diamond Tester Thermal Conductivity Tool. Designed for jewelers, gem collectors, and enthusiasts, this device helps distinguish diamonds from common simulants by measuring thermal conductivity for reliable gemstone testing.

Compact and portable, this testing tool is easy to use in jewelry shops, markets, or at home. Its lightweight design and battery-powered operation make it convenient for on-the-go assessments and everyday use.

Built with durable metal and engineering-grade plastic, this diamond testing pen is designed for long-term reliability and consistent performance.

Key Features

• Tests thermal conductivity to help identify diamonds vs simulants
• Simple, fast, and easy-to-use operation
• Compact and portable design for travel or field testing
• Suitable for jewelry professionals and gemstone enthusiasts
• Lightweight construction with durable build quality
• Battery-powered for convenient use anywhere
• Clear indicator system for quick reading

Product Details

• Product Type: Diamond / gemstone tester
• Technology: Thermal conductivity testing
• Material: Metal + engineering plastic
• Power: 9V battery (not always included depending on supplier)
• Color: Black
• Use: Jewelry verification, gemstone testing, appraisal support

Ideal For

• Jewelers and jewelry stores
• Gem collectors and hobbyists
• Pawn shops and resale verification
• Jewelry appraisal and authenticity checks