--- product_id: 438802564 title: "High Accuracy Diamond Tester Pen - Professional Diamond Selector for Jewelers, Environmental Protection 9V Battery, Thermal Conductivity Meter" brand: "yhkj" price: "3489371₫" currency: VND in_stock: true url: https://www.desertcart.vn/products/438802564-high-accuracy-diamond-tester-pen-professional-diamond-selector-for-jewelers store_origin: VN region: Vietnam --- # High Accuracy Diamond Tester Pen - Professional Diamond Selector for Jewelers, Environmental Protection 9V Battery, Thermal Conductivity Meter **Brand:** yhkj **Price:** 3489371₫ **Availability:** ✅ In Stock ## Quick Answers - **What is this?** High Accuracy Diamond Tester Pen - Professional Diamond Selector for Jewelers, Environmental Protection 9V Battery, Thermal Conductivity Meter by yhkj - **How much does it cost?** 3489371₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/438802564-high-accuracy-diamond-tester-pen-professional-diamond-selector-for-jewelers) ## Best For - yhkj enthusiasts ## Why This Product - Trusted yhkj brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Features: Diamond indicator will be showed if the stone is a REAL diamond (Green light). Metal alert (continuous buzzing sound when user accidentally touches metal rather than stone). Large / small switch for testing diamonds / - 8 points. LCD display & LED indicator. Powered by DC 9V battery x 1 ( Included) How To Test Diamond Turn on the switch. Make sure only 1 light is lighting up on the scale. Wait few seconds for the probe to heat up until Lamp on ready OK. Turn on the lights numbers corresponding to the indoor temperature and diamond weight. If don't know. Set 4 lights is lighting up on the scale. Start test diamond, no need to adjust the switch switch. Use the diamond discriminator probe to make 90-degree contact with the measured object, and observe the indicator light change. It needs a little bit of force to stop it on the diamond surface and make full contact. If unsuccessful, please repeat the second step. Yhkj Diamond Tester Pen Test result analysis If lights >= 9 and have sounds, it is true diamond. If lights <9 and no sounds, it is not diamond. If lights is 7 or 8, it is true crystal. If lights is 6 or 7, it is true jade. If lights is 4 or 5, it is glass. Don't test metal，Don't wear gloves. In a low temperature environment, the battery discharge is weakened. Please raise the battery temperature to above 10 degrees Celsius. The test takes a few minutes, please turn off the power after the test is complete. Package include: 1 x Diamond Tester 1 x Leather Pouch Case 1 x Testing Platform 1 x User Manual Our products are all from factory direct supply, we can guarantee 100% inspection before shipping. If any problems of our products really exist, an exchange or a refund is available. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | Yhkj | | Power Source | Battery Powered | | Style | Compact | | Item Weight | 4.27 Ounces | | Lower Temperature Rating | 1E+1 Degrees Celsius | | Min. Operating Voltage | 9 Volts (DC) | | Measurement Type | Thermal Conductivity Meter | | UPC | 793101013429 | | Manufacturer | Yhkj | | Package Dimensions | 7.44 x 2.24 x 1.42 inches | | Item Weight | 4.3 ounces | | ASIN | B09W4YR5K8 | | Item model number | Y-sss1 | | Batteries | 1 9V batteries required. (included) | | Date First Available | April 18, 2022 | ## Product Details - **Brand:** Yhkj - **Power Source:** Battery Powered - **Style:** Compact - **Item Weight:** 4.27 Ounces - **Lower Temperature Rating:** 1E+1 Degrees Celsius ## Images ![High Accuracy Diamond Tester Pen - Professional Diamond Selector for Jewelers, Environmental Protection 9V Battery, Thermal Conductivity Meter - Image 1](https://m.media-amazon.com/images/I/81EoMyvjbhL.jpg) ## Questions & Answers **Q: I put the battery in and turned it on and it won’t stop beeping and it’s all the way lit up?** A: Turn it on, then dial it up to where only the green bars are lit and leave it there until the “ready” light comes on. As it heats up and as you test a yellow bar or two may tend to stay lit (while not testing) keep it dialed back to show only green bars. Also it will beep if you make contact with metals, keep the tip only on your stones.good product for the money! **Q: I need to test pave diamonds. They are extremely small. Will this device work on tiny size diamonds?** A: I used this tester on a pair of ruby earrings with very tiny diamonds “diamond chips” surrounding the small rubies. It picked right up on the diamonds. **Q: Does this differentiate between dimond and moissanite?** A: Yes it should **Q: If the tested stone is Moissanite and registers >9, will the tester also beep? How about with rubies and sapphires? Thanks.** A: Yes.Ruby and sapphire, the test result will not be greater than 9, and there will be no sound. The test result of Moissanite is greater than 9 and there is sound. There is no difference between Moissanite physics and chemistry and natural diamonds. So the test results are the same. ## Frequently Bought Together - Diamond Tester High Accuracy Diamond Tester Pen,Environmental Protection 9V Battery,Professional Diamond Selector for Jeweler Novice and Expert,Thermal Conductivity Meter (Diamond Tester) - Gold Silver Jewelry Tester Appraisal Kit 10K 14K 18K 22K 24K Test Precious Metals 999 925 Scrap --- ## 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.vn/products/438802564-high-accuracy-diamond-tester-pen-professional-diamond-selector-for-jewelers](https://www.desertcart.vn/products/438802564-high-accuracy-diamond-tester-pen-professional-diamond-selector-for-jewelers) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-19*