Diamond Testers

Gemtone Gemtone Deluxe Jeweler's Diamond & Gemstone Analyzer Tester Review: Is It Worth It? The Gemtone Deluxe Jeweler's Diamond & Gemstone Analyzer is a great entry-level tool for hobbyists and casual users needing a simple and affordable way to distinguish between diamonds and simulants, but it should not be considered a replacement for professional gemological testing. Read the guide →