--- product_id: 535171571 title: "Diamond Tester, Jewelry Diamond Tester Pen ＋ 40X Mini LED Magnifying, Diamond Selector for Novice, Thermal Conductivity Meter" brand: "hmkis" price: "807334₫" currency: VND in_stock: true reviews_count: 8 url: https://www.desertcart.vn/products/535171571-diamond-tester-jewelry-diamond-tester-pen-40x-mini-led-magnifying store_origin: VN region: Vietnam --- # 4-level LED indicator Distinct beep frequency alerts 40X Mini LED magnifier Diamond Tester, Jewelry Diamond Tester Pen ＋ 40X Mini LED Magnifying, Diamond Selector for Novice, Thermal Conductivity Meter **Brand:** hmkis **Price:** 807334₫ **Availability:** ✅ In Stock ## Summary > 💎 Test like a pro, spot the sparkle, never miss the real deal! ## Quick Answers - **What is this?** Diamond Tester, Jewelry Diamond Tester Pen ＋ 40X Mini LED Magnifying, Diamond Selector for Novice, Thermal Conductivity Meter by hmkis - **How much does it cost?** 807334₫ 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/535171571-diamond-tester-jewelry-diamond-tester-pen-40x-mini-led-magnifying) ## Best For - hmkis enthusiasts ## Why This Product - Trusted hmkis brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Metal Alert Buzzer:** Prevents false positives by warning you when the probe touches metal surfaces. - • **Dual-Hand Operation:** Ensures reliable readings by requiring both hands—one on the stone, one on the tester’s conductive panel. - • **Compact & Lightweight:** Portable 7-ounce design fits comfortably in your hand for on-the-go testing. - • **Enhanced Visual Inspection:** Built-in 40X LED magnifier lets you closely examine stones for added confidence. - • **Precision Thermal Conductivity:** Accurately distinguishes diamonds from imitations with clear beep signals and LED levels. ## Overview The HMKIS Diamond Tester 5 combines thermal conductivity technology with a 4-level LED indicator and distinct beep alerts to accurately identify real diamonds versus imitations. Featuring a metal alert buzzer and a 40X LED magnifier, this compact, dual-hand operated device ensures precise, on-the-spot verification for jewelry enthusiasts and professionals alike. ## Description Diamond Tester, Jewelry Diamond Tester Pen ＋ 40X Mini LED Magnifying, Diamond Selector for Novice, Thermal Conductivity Meter ## Features - 【Initialization】After powering on, turn the wheel to keep 4 green lights on to finish the Initialization. Otherwise you will get inaccurate results. All test must be done by two hands, one for hold the diamond and one for the diamond tester. As for the hand which hold diamond tester, you have to touch the electricity conductive panel on the back of the unit. - 【For Diamond】For testing diamond, it will emits beeping-beeping-beeping in a low frequency, 1 time/second. Meanwhile 1-4 pieces of the RED LAMP box of the level meter light on(the bigger the size of the stone is, the more pieces of the red lamp box of the level meter light up) - 【For Imitation】When Testing Imitation stone,such as cubic zirconium ( CZ ), crystal, glass, there will be no sound, and the red lamp won’t light. - 【Metal Alert】When Testing metal, it will emits beeping-beeping-beeping in a high frequency,5times/second. The thermal conductivity of the metal is very high and can give the same indication as a diamond with most thermal probes.) This Diamond Selector II has a metal Alert Buzzer to warn you when touches metal. If you hear the Metal Alert buzzing sound,re-touch the probe tip so as to touch only the tested stone. - 【Moissanite & Real Diamonds】:This diamond tester II can just distinguish diamond and fake diamond,but CAN NOT distinguish Moissanite & Real Diamonds - 【Can not test metal】 Must be operated with both hands, the device can distinguish the metal material, such as one-hand operation, the device will misjudge the metal as diamond. ## Technical Specifications | Specification | Value | |---------------|-------| | Product Dimensions | 10.24 x 2.36 x 1.38 inches | | Item Weight | 7 ounces | | Manufacturer | HMKIS | | ASIN | B0BVYLL61V | | Country of Origin | China | | Item model number | Diamond Tester 5 | | Date First Available | February 24, 2023 | ## Images ![Diamond Tester, Jewelry Diamond Tester Pen ＋ 40X Mini LED Magnifying, Diamond Selector for Novice, Thermal Conductivity Meter - Image 1](https://m.media-amazon.com/images/I/71sShanVWRL.jpg) ![Diamond Tester, Jewelry Diamond Tester Pen ＋ 40X Mini LED Magnifying, Diamond Selector for Novice, Thermal Conductivity Meter - Image 2](https://m.media-amazon.com/images/I/71rigW0BkGL.jpg) ![Diamond Tester, Jewelry Diamond Tester Pen ＋ 40X Mini LED Magnifying, Diamond Selector for Novice, Thermal Conductivity Meter - Image 3](https://m.media-amazon.com/images/I/61tGRTMgymL.jpg) ![Diamond Tester, Jewelry Diamond Tester Pen ＋ 40X Mini LED Magnifying, Diamond Selector for Novice, Thermal Conductivity Meter - Image 4](https://m.media-amazon.com/images/I/71UM3hAIrvL.jpg) ![Diamond Tester, Jewelry Diamond Tester Pen ＋ 40X Mini LED Magnifying, Diamond Selector for Novice, Thermal Conductivity Meter - Image 5](https://m.media-amazon.com/images/I/71niYWBtjcL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ It works perfectly! *by E***R on April 18, 2025* Good product for good price! Works good!You really need to know how to use it correctly! ### ⭐⭐⭐⭐⭐ Very accurate *by M***H on November 26, 2023* You do not have to be a jeweler to know how to use this. Very easy to use. Just read instructions. I was surprised at the quality and value of the items. I bought mine after I had my ring resized. My diamonds looked so clean the I swore they switched them. LOL they definitely didn't. They just needed s good cleaning. I used this on all my jewelry and it works great! ### ⭐⭐⭐⭐ It works but not always *by H***N on September 29, 2024* It works, but sometimes the lights aren’t lighting up on the side Is sometimes the beeping won’t stop even after I’ve put it away from the stone And I end up having to reset the machine It feels durable. It doesn’t feel like it’ll break very easily. And it seems accurate when it wants to work it’s not really hard to use . It’s one of those you get what you pay for and it’s not bad for its Price ## Frequently Bought Together - Diamond Tester, Jewelry Diamond Tester Pen ＋ 40X Mini LED Magnifying, Diamond Selector for Novice, Thermal Conductivity Meter - WELLZEER Keychain Magnet for Testing Brass,Keychain Pocket Magnets for Purse with Strong Magnetic Rare Earth Neodymium,Gold,Silver, Jewelry,Ferrous Metals Test Magnet (2PACK-D12mm) --- ## 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/535171571-diamond-tester-jewelry-diamond-tester-pen-40x-mini-led-magnifying](https://www.desertcart.vn/products/535171571-diamond-tester-jewelry-diamond-tester-pen-40x-mini-led-magnifying) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-19*