--- product_id: 545422694 title: "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: "6791 kr" currency: ISK in_stock: true reviews_count: 5 category: "Jzk" url: https://www.desertcart.is/products/545422694-portable-electronic-diamond-tester-pen-for-diamond-sapphire-ruby-crystal store_origin: IS region: Iceland --- # 9+ lights & beep = real diamond Lightweight 100g, portable design Multi-gemstone detection: sapphire, ruby, jade & more 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:** 6791 kr **Availability:** ✅ In Stock ## Summary > 💎 Test Like a Pro, Shine Like a Boss ## Quick Answers - **What is this?** 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?** 6791 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/545422694-portable-electronic-diamond-tester-pen-for-diamond-sapphire-ruby-crystal) ## 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 - • **Durable & Reliable:** Robust build with long-lasting battery life (9V battery) keeps you confidently testing at trade shows, stores, or client visits. - • **User-Friendly Calibration:** Easy setup with intuitive calibration on glass ensures reliable results every time, even in varying indoor temperatures. - • **Multi-Gemstone Versatility:** Accurately tests diamonds, sapphires, rubies, jade, agate, crystal, and more—one tool for all your precious stones. - • **Precision at Your Fingertips:** Instantly verify diamonds & multiple gemstones with 9+ indicator lights and audible beep for foolproof authenticity. - • **Ultra-Portable & Lightweight:** Compact 16x4x2.2 cm design weighing just 100g—perfect for on-the-go professionals and gem enthusiasts. ## Overview The JZK Portable Electronic Diamond Tester Pen is a precision tool designed for professionals and gemstone enthusiasts to quickly and accurately verify the authenticity of diamonds and a wide range of precious stones. Featuring a clear 9+ light indicator system with audible confirmation, it supports multi-gemstone testing including sapphire, ruby, jade, agate, and crystal. Its compact, lightweight design and easy calibration make it ideal for on-the-go use, while its durable construction ensures long-term reliability. Powered by a 9V battery (not included), this tester is an essential device for anyone serious about gemstone validation. ## 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. Review: Il tester Portatile Elettronico per Diamanti, Zaffiri, Rubino, Cristallo, Agata, Giada, Strumento di Prova Durezza delle Pietre Preziose, Diamond Selector II V2, è un dispositivo eccezionale per chiunque si occupi di gioielleria o collezioni di pietre preziose. La sua capacità di identificare accuratamente la durezza di vari tipi di pietre è impressionante, garantendo una precisione che è essenziale nel settore. La sua portabilità lo rende un compagno ideale per chiunque abbia bisogno di verificare la qualità delle pietre in diversi ambienti, come fiere o negozi di gioielli. La facilità d'uso è un altro punto forte di questo tester. Anche chi non è esperto nel settore può utilizzarlo con facilità grazie alle istruzioni chiare e intuitive. La sua velocità nel fornire risultati affidabili è notevole, risparmiando tempo prezioso durante le valutazioni delle pietre. Inoltre, la durata della batteria è impressionante, assicurando che il dispositivo sia sempre pronto all'uso quando ne hai bisogno. La sua costruzione solida e resistente garantisce anche una lunga durata nel tempo, il che è fondamentale per un'attrezzatura di questo tipo. In sintesi, il Diamond Selector II V2 è un investimento prezioso per chiunque abbia a che fare con pietre preziose. La sua precisione, portabilità e facilità d'uso lo rendono uno strumento indispensabile per professionisti e appassionati. Review: An accurate and indispensable tool ## 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 | 4.0 4.0 out of 5 stars (2,662) | | Date First Available | 21 September 2019 | | Item Weight | 80 g | | Manufacturer | JZK | | Manufacturer Part Number | 76166 | | Manufacturer reference | 76166 | | Package Dimensions | 22.6 x 15.5 x 3.2 cm; 80 g | ## Images ![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) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by D***I on 20 April 2024* Il tester Portatile Elettronico per Diamanti, Zaffiri, Rubino, Cristallo, Agata, Giada, Strumento di Prova Durezza delle Pietre Preziose, Diamond Selector II V2, è un dispositivo eccezionale per chiunque si occupi di gioielleria o collezioni di pietre preziose. La sua capacità di identificare accuratamente la durezza di vari tipi di pietre è impressionante, garantendo una precisione che è essenziale nel settore. La sua portabilità lo rende un compagno ideale per chiunque abbia bisogno di verificare la qualità delle pietre in diversi ambienti, come fiere o negozi di gioielli. La facilità d'uso è un altro punto forte di questo tester. Anche chi non è esperto nel settore può utilizzarlo con facilità grazie alle istruzioni chiare e intuitive. La sua velocità nel fornire risultati affidabili è notevole, risparmiando tempo prezioso durante le valutazioni delle pietre. Inoltre, la durata della batteria è impressionante, assicurando che il dispositivo sia sempre pronto all'uso quando ne hai bisogno. La sua costruzione solida e resistente garantisce anche una lunga durata nel tempo, il che è fondamentale per un'attrezzatura di questo tipo. In sintesi, il Diamond Selector II V2 è un investimento prezioso per chiunque abbia a che fare con pietre preziose. La sua precisione, portabilità e facilità d'uso lo rendono uno strumento indispensabile per professionisti e appassionati. ### ⭐⭐⭐⭐⭐ Review *by H***Y on 25 November 2025* An accurate and indispensable tool ### ⭐⭐⭐⭐⭐ Review *by C***N on 27 December 2025* Facile à utiliser ## 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.is/products/545422694-portable-electronic-diamond-tester-pen-for-diamond-sapphire-ruby-crystal](https://www.desertcart.is/products/545422694-portable-electronic-diamond-tester-pen-for-diamond-sapphire-ruby-crystal) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-04-29*