High-Precision Diamond Tester Pen – Portable Electronic Tool for Jewelry, Jade & Ruby Identification, Battery-Powered Product details: Product Types: Drill Pen Power Supply: Dry Battery Power ⭐️Price today: only $8 (discount: -70%) ✅Item ID: 020725 🌟🎉Order now High-precision diamond tester pen View this post on Instagram A post shared by SELLINES NETWORK (@sellinescom) … continue reading -> “High-precision diamond tester pen”