--- product_id: 545422694 title: "JZK Portable Electronic Diamond Tester Pen for Diamond, Sapphire, Ruby, Crystal, Agate, Jade, gems Multi Gemstone Precious Stones Hardness Test Tool, Diamond Selector II V2" brand: "jzk" price: "AED 109" currency: AED in_stock: true category: "Jzk" url: https://www.desertcart.ae/products/545422694-jzk-portable-electronic-diamond-tester-pen-for-diamond-sapphire-ruby store_origin: AE region: United Arab Emirates --- # Multi-gemstone detection Compact 16x4x2.2 cm size 9V battery powered JZK Portable Electronic Diamond Tester Pen for Diamond, Sapphire, Ruby, Crystal, Agate, Jade, gems Multi Gemstone Precious Stones Hardness Test Tool, Diamond Selector II V2 **Brand:** jzk **Price:** AED 109 **Availability:** ✅ In Stock ## Summary > 💎 Test with confidence, flaunt with pride! ## Quick Answers - **What is this?** JZK Portable Electronic Diamond Tester Pen for Diamond, Sapphire, Ruby, Crystal, Agate, Jade, gems Multi Gemstone Precious Stones Hardness Test Tool, Diamond Selector II V2 by jzk - **How much does it cost?** AED 109 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ae](https://www.desertcart.ae/products/545422694-jzk-portable-electronic-diamond-tester-pen-for-diamond-sapphire-ruby) ## Best For - jzk enthusiasts ## Why This Product - Trusted jzk brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Portable & Lightweight:** Compact 16cm design and just 110g weight make it your on-the-go gem authenticity companion. - • **User-Friendly Calibration:** Simple glass calibration ensures flawless readings for all precious stones every time. - • **Professional-Grade Accuracy:** Designed for managers and professionals who demand trustworthy gem testing in seconds. - • **Precision Multi-Gemstone Tester:** Accurately verifies diamonds, sapphires, rubies, jade, and more with distinct light & beep signals. - • **Instant Authenticity Confirmation:** Visual light scale plus audible beep delivers fast, reliable gemstone verification to avoid costly mistakes. ## Overview The JZK Portable Electronic Diamond Tester Pen is a sleek, battery-powered device that quickly and accurately tests the authenticity of diamonds and multiple precious gemstones including sapphire, ruby, jade, and crystal. Featuring a clear light and beep indicator system, it offers professional-grade precision in a compact, lightweight design perfect for on-the-go verification. Ideal for professionals and enthusiasts who want to avoid costly fakes and ensure genuine stones every time. ## Description If the number of lights equal or exceed 9, and it beeps, it means the diamond is true. If the number of lights is 9 and it beeps, it means the sapphire is true. If the number of lights is 6.5-7, it means the agate is true. If the number of lights 7-8 , it means the crystal is true. If the number of lights is 6-7, it means the jade is true. ★ Before Test: 1. Put the battery into the tester. 2. Take off the probe cap. 3. Turn on the switch. 4. Make sure just 1 light light up on the scale. 5. Make sure the " ready lamp" light on. 6. (If you test diamond, you then need to turn on the number of lights corresponding to the indoor temperature and diamond weight. ) 7. (If you test other gems, you'd better calibrate the probe before testing, Method: by placing the probe vertically on a piece of glass, then adjusting the light to 5, and then placing the probe on the gemstone to test.) 8. Test is ready. ★ NOTICE: * No matter what gemstone you are testing, the probe needle and the tested object must be at a 90° angle. * When testing diamond, your right index finger must keep touching the metal panel on the back of the tester, while you do not touch the panel if you test other gemstones. * Do Not test any metal. * Do Not wear glove. Product size: 16 * 4 * 2.2 cm. weight: 100g. Power needed: 1x 9V battery (not included). Package contains: 1x diamond tester + 1x English introduction + 1x black storage case If you have any problem about the testing, please contact us, we would love to help. ## Features - This gemstone testing equipment is not only a diamond tester, but also a multi gemstone tester. It can detect if a gemstone is real or fake, including: diamond, sapphire, ruby, crystal, agate, jadeite, and other precious stone of various sizes. - * If the number of lights equals or exceeds 9, and it beeps, it means the diamond is true. * If the lights is about 9 and it beeps, it means the sapphire is true. * If the number is 6.5-7, it means the agate is true. * If the number is 7-8 , it means the crystal is true. * If the number is 6-7, it means the jade is true. - Before Test: 1. Put the battery in the tester. 2. Take off the probe cap. 3. Turn on the switch. 4. Make sure only one light light up on the scale. 5. Make sure the " ready lamp" light on. 6. (If test diamond, you then need to turn on the lights number corresponding to the indoor temperature and diamond weight.). 7. (If test other gems, you'd better calibrate the probe, method: by placing the probe vertically on a glass, then adjusting the light to 5, then test the gems.) - ★ NOTICE: * No matter what gemstone you are testing, the probe needle and the tested object must be at a 90° angle. * When testing diamond, your right index finger must keep touching the metal panel on the back of the tester, while you do not touch the panel if you test other gemstones. * Do Not test any metal. * Do Not wear glove. - Product size: 16 * 4 * 2.2 cm. weight: 100g. Power needed: 1x 9V battery (not included). If you have any problem about the testing, please contact us, we would love to help. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07DHPYLCV | | Brand | JZK | | Customer Reviews | 3.9 3.9 out of 5 stars (2,774) | | Date First Available | 21 September 2019 | | Item Weight | 110 g | | Manufacturer | JZK | | Manufacturer Part Number | 76166 | | Manufacturer reference | 76166 | | Package Dimensions | 17.3 x 6.9 x 4.9 cm; 110 g | ## Images ![JZK Portable Electronic Diamond Tester Pen for Diamond, Sapphire, Ruby, Crystal, Agate, Jade, gems Multi Gemstone Precious Stones Hardness Test Tool, Diamond Selector II V2 - Image 1](https://m.media-amazon.com/images/I/512CcfDiPQL.jpg) ## Frequently Bought Together - JZK Portable Electronic Diamond Tester Pen for Diamond, Sapphire, Ruby, Crystal, Agate, Jade, gems Multi Gemstone Precious Stones Hardness Test Tool, Diamond Selector II V2 - 2 Pieces Jewelers Loupe 30X 60X 90X Illuminated Eye Loupe Magnifier Jewelry Magnifying Glass Loop with UV Black Light and Bright LED Light for Diamond Gem Coin Stamp Rock(Black) - KINGMAS 40x Jeweller Loupe Folding Magnifying Jewelry Eye Magnifier With LED Light Illuminated (LED Currency Detecting/Jewlers Identifying Type Lupe) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ae/products/545422694-jzk-portable-electronic-diamond-tester-pen-for-diamond-sapphire-ruby](https://www.desertcart.ae/products/545422694-jzk-portable-electronic-diamond-tester-pen-for-diamond-sapphire-ruby) --- *Product available on Desertcart United Arab Emirates* *Store origin: AE* *Last updated: 2026-10-19*