DK9800 Arcus Lab Diamond Tester | Portable CVD vs HPHT Diamond Identification Pen
Item No. DK9800
 
The DK9800 Arcus Lab Diamond Tester is a specialized professional tool designed exclusively to distinguish CVD and HPHT lab-grown diamonds quickly and accurately—one of the most critical and high-value challenges in today’s diamond market.
 
As lab-grown diamonds become increasingly common, both CVD and HPHT diamonds are sold under the same category, yet their market values can differ significantly. This makes accurate separation essential for jewelers, dealers, and professionals handling lab diamonds.
 
Unlike traditional solutions—which are typically large, expensive desktop machines used in labs and fixed environments —the DK9800 Arcus introduces a portable pen-style solution, offering unmatched convenience and accessibility.
 
With instant LED color indicators and audio alerts, the tester provides clear, easy-to-understand results:
Blue Light: CVD Diamond
Green Light: HPHT Diamond
Red Light: Ruby / Sapphire
Orange Light: Metal Alert
 
This intuitive system allows professionals to identify diamond types in seconds, reducing errors and improving workflow efficiency.
 
Designed with a dolphin-inspired ergonomic shape, the Arcus ensures comfortable handling and precise contact during testing. The 0.6mm retractable probe enhances durability and reliability for continuous daily use, while the independent UV light control provides additional flexibility when needed.
 
Why DK9800 Stands Out 
One of the most affordable and portable solutions for CVD vs HPHT separation
Eliminates reliance on bulky lab equipment
Designed for real-world jewelry environments (retail, trading, exhibitions)
Fast, simple, and highly practical
 
Product Specifications
Item No.: DK9800
Product Type: Lab-grown diamonds only
Display: LED ring with text feedback + audio alerts
Probe: 0.6mm retractable thermoelectric tip
UV Light: Independently controlled
Dimensions: 160 × 30 × 23 mm (6.30 × 1.18 × 0.91 in)
Weight: 50g (without battery)
Power Supply: 1 × 9V battery (not included)
Battery Life: ~3 hours continuous use; ~1.5 hours with UV active
Operating Temp: 18°C – 28°C (64°F – 82°F)
Storage Temp: 20°C – 40°C (68°F – 104°F)
Humidity: 35% – 65%
Low Battery Warning: Yes
LED Display: Yes
Voice Test Results: Yes
 
Package Includes:
• 1 × DK9800 Arcus Lab Diamond Tester
• 1 × Metal Loose Stone Holder
• 1 × User Manual
• 1 × Stylish Carrying Zip Case
 
The DK9800 Arcus Lab Diamond Tester is the most practical and efficient portable solution for separating CVD and HPHT diamonds—bringing lab-level capability into the hands of every jewelry professional.