11/08/2026

Presidium Instruments Gem Tester II (PGT II) w/ Assisted Thermal Calibration (AT

Presidium Instruments Gem Tester II (PGT II) w/ Assisted Thermal Calibration (ATC) INCLUDED ASSISTED THERMAL CALIBRATION | Now easily self calibrate your device to your testing environmentINDUSTRIES MOST TRUSTED | Gemstone tester redesigned to be more compact, sturdy and portableTHINNEST RETRACTABLE PROBE TIP I PGT II features the industry’s thinnest retractable probe tipVERSATILE AND RELIABLE | Consistent and reliable results every time. Identifies diamonds/moissanitesSIMPLE & EASY TO USE | Clear and easy-to-read analog dial; Can differentiate 16 types of gemstones AN INDUSTRY LEADER The Presidium Gem Tester II is based on the invention of Professor Julian Goldsmid from the University of New South Wales in Australia. It was developed to distinguish between diamonds and its other simulants using the principles of thermal conductivity. The Presidium Gem Tester II with Assisted Thermal Calibration provides a quick and easy way to identify diamonds/moissanites and separates up to 16 common colored gemstones based on their thermal conductivity with its clear and direct analog display. NEW INCLUDED CALIBRATION FEATURE As PGT II works on the thermal conductivity of the gemstone, its measurement will be affected by the testing environment. WIth the improved function of Assisted Thermal Calibration (ATC), the user is now able to easily calibrate the tester according to the testing environment for a reliable and consistent reading. The Presidium Gem Tester II Features:Retractable thermoelectric probe tip that ensures constant pressure between probe tip and gemstoneIndustry's thinnest probe tip (0.6mm) for testing diamonds as small as 0.02ctMetal alert buzzer to ensure that probe tip is in contact with gemstone during testingClear and easy-to-read analog dialNo waiting time between testsBuilt-in Calibration (CAL) and Glass test discs for referencePowered by 2 x AA batteries or adaptor Included in Your PackagePresidium Gem Tester IIRetractable probe penBuilt-in Calibration (CAL) and Glass test discsAC adaptorUser handbookWarranty cardProtective carrying case Item model number PGT-II Part Number PGT/CSE Batteries Required? No Item Package Quantity 1 Color Black Product Dimensions 7.8 x 4.5 x 3.8 inches Material Other Item Weight 1.15 pounds Batteries 2 AA batteries required. Batteries Included? No Description Pile AA Manufacturer Presidium Is Discontinued By Manufacturer Yes Size Medium Shipping Fast shipping is very important for us. Our standard US shipping service is FREE. Your order will be shipped within 2-3 business days upon full payment received. Your order will be delivered within 2-3 business days after the handling time. We only ship to the confirmed PayPal address. We reserve the right to cancel any order for any reason at any time. We are not responsible for undeliverable addresses. Returns and payment We offer a 30 days return policy from checkout winning date. We allow only PayPal as payment methodFeedBack Your feedback very important to us, after you get your package and you are satisfied with our service please leave us positive feedback If you have any problem with your order / any questions please before leave any type of feedback For any questions, using eBay contact system Please visit our eBay store to check out other items for sale!Thank you for shopping at our store.
10/08/2026

Presidium Multi Tester III (PMuT III) for Testing Diamonds, Moissanite

Presidium Multi Tester III Diamond & Moissanite Tester NEW IN SEALED BOX The Presidium Multi Tester III distinguishes genuine diamond from moissanite, CZ and other simulants, all in a single unit. Ergonomic design with a rubberized anti-slip grip, the PMUT allows for fast, easy, comfortable use even for many tests in a row. Instantly indicates metal, simulants, moissanite or diamond with LED colored light bar. Thin probe tip for testing stones as small as 0.02ct. Retractable tip ensures constant pressure between the measuring probe and gemstone. No waiting time between tests. 180 degree easy view LED display. Comfortable for both left and right-handed user. Operates on 3 AAA batteries (not included) or optional AC adapter (sold separately) ***FREE SHIPPING TO USA***
10/08/2026

PGT-2 Presidium Gem Tester II

Presidium?. Gem Tester II. The most trusted and sought-after colored gemstone tester has been redesigned with the user in mind to be more compact, sturdy and portable. Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstone.
10/08/2026

Presidium Diamond Mate-A Diamond Tester Black for Diamond Testing

✅ Trusted Presidium Quality. Presidium Diamond Tester. This tester is ideal for identifying authentic diamonds and helping distinguish them from many common simulants. ⚡ Don’t miss out on this opportunity to own a professional-quality diamond tester at a fraction of the cost of buying new!
10/08/2026

NEW PRESIDIUM Gem Tester II Colored Stone tester and Diamond Tester Moissanite

THE ALL-NEW Presidium® Gem Tester II THIS TESTER WILL NOT DIFFERENTIATE DIAMOND FROM MOISSANITE. The most trusted and sought-after colored gemstone tester has been redesigned with the user in mind to be more compact, sturdy and portable. The Presidium Gem Tester II (PGT II) provides users with a quick and easy way to identify diamonds/moissanites* and separate up to 15 common colored gemstones based on their thermal properties. Clear and direct analog display Built-in Glass and Calibration Discs for reference The industry's thinnest probe tip (0.6mm) for testing colored gemstones as small as 0.02ct. Features Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstoneIndustry’s thinnest probe tip (0.6mm) for testing gemstones as small as 0.02ctMetal alert buzzer to ensure that probe tip is in contact with gemstone during testingClear and easy-to-read analog dialCan differentiate between 15 types of gemstonesBuilt-in glass and Calibration (CAL) test discs for reference Benefits Identifies diamonds/moissanites and most colored gemstones*Tests both polished and unpolished gemstonesTests gemstones as small as 0.02ctConsistent and reliable results every timeNo waiting time between testsSimple and easy to use Runs on 2 AA batteries (Not included) or adapter (included) WE ARE AN AUTHORIZED USA PRESIDIUM DISTRIBUTOR REPLACEMENT PROBE AVAILABLE HERE SHIPPING CONTINENTAL US BUYERS: All orders placed before 3pm on a business day (Monday - Thursday excluding Holidays) will ship same or next day. Any order placed Friday-Sunday will be processed the following Monday. We promise a maximum handling time of 2 days for any order.(If an unforeseen delay occurs, you will be notified) INTERNATIONAL BUYERS: Please inquire about additional shipping costs. Any extra shipping fees must be covered by the buyer. Any customs fees (duties and taxes) incurred by your country are the sole responsibility of the buyer.Most international orders will ship USPS Priority Mail International RETURNS GENERAL RETURN POLICY If you are not satisfied with the item(s) purchased from us, you may return your item(s) in original condition for a refund within 30 days of receipt after contacting us. No returns will be accepted for any reason after the 30-day period. Items returned in unused, original condition, will be refunded in full. However, restocking fees may apply to discretionary returns or returns that arrive back not in the original conditions sent. Returned merchandise must include all original packaging, along with included contents and accessories, bonus items, documents or paperwork, and Proof of Purchase in order for the full refund to be honored. Please read the entire product description. Items that do not fall within the manufacturer's return or exchange policies cannot be accepted for returns or refunds. The customer is responsible for shipping costs on any returned merchandise. There will be no refunds or exchanges for used gold testers or any testing liquids (gold testing liquid, acids, R.I. liquid, gel refills). INTERNATIONAL BUYERS: Please remember, that return shipping fees are buyer's responsibility. IMPORTANT: Please be aware that we are not responsible for any item that we do not receive or returned merchandise that is not accordance with these terms. DAMAGED/DEFECTIVE MERCHANDISE: If you receive a damaged, defective, or incorrect item, contact us within 2 days. If you receive merchandise with extensive damage to its packaging upon arrival, please refuse the order and contact us immediately. In such an event, we recommend that you contact the shipper immediately to report the damaged goods. WARRANTY: All warranties are offered solely by the manufacturer. If you want to return an item more than 14 days after you received it from us, you will need to contact the manufacturer, which we can assist you with.
10/08/2026

Presidium Multi Tester III (PMuT III) for Testing Diamonds, Moissanite

Presidium Multi Tester III (PMuT III) for Testing Diamonds, Moissanite CONVENIENT ALL-IN-ONE HANDHELD INSTRUMENT THAT INSTANTLY SEPARATES DIAMONDS FROM MOISSANITES AND OTHER DIAMOND SIMULANTS, BASED ON THEIR THERMAL AND ELECTRICAL PROPERTIES. THE PRESIDIUM MULTI TESTER III (PMUT III) IS THE ALL-IN-ONE INSTRUMENT THAT RELIABLY AND ACCURATELY VERIFIES THE AUTHENTICITY OF COLORLESS DIAMONDS AGAINST MOISSANITES AND OTHER DIAMOND SIMULANTS SUCH AS COLORLESS SAPPHIRE, COLORLESS SPINEL, CUBIC ZIRCONIA, ZIRCON, ETC. SHOWCASING A NEW ERGONOMIC DESIGN WITH A RUBBERIZED ANTI-SLIP GRIP AND AN ALL-AROUND DISPLAY FOR EASY READABILITY, PMUT III PROMISES GREATER EASE OF HANDLING AND READING OF RESULTS WHILST TESTING. PRESIDIUM’S MULTI TESTER WAS THE WORLD’S FIRST TESTER THAT TESTS FOR BOTH COLORLESS DIAMONDS AND MOISSANITES IN A SINGLE INSTRUMENT. ITS MEASURING PROBES AND ELECTRONICS CIRCUITRY DETECT DATA FROM THE GEMSTONE BEING TESTED VIA A CUSTOMIZED MICRO-CONTROLLER, IDENTIFYING COLORLESS DIAMONDS AND MOISSANITES BASED ON THEIR THERMAL AND ELECTRICAL PROPERTIES. PMUT III HAS A RETRACTABLE PROBE TIP THAT ENSURES CONSISTENT PRESSURE AGAINST THE GEMSTONE DURING TESTING FOR MORE RELIABLE RESULTS. WITH THE INDUSTRY’S THINNEST PROBE TIP SIZE OF 0.6MM, THE PMUT III TESTS COLORLESS DIAMONDS AS SMALL AS 0.02CT. FEATURES Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstone Industry’s thinnest probe tip (0.6mm) for testing gemstones as small as 0.02ct Metal alert buzzer to ensure that probe tip is in contact with gemstone during testing Ergonomic design with rubberized anti-slip grip for better handling during testing 180-degree multi-viewing LED display Catered to both left-handed and right-handed users alike International voltage compatibility Low batter indicator Automatic power off BENEFITS Identifies metals, simulants, moissanites, and colorless diamonds instantly Enhanced accuracy and consistency with improved functionality and USAbility Accurate testing on diamonds as small as 0.02ct Enhanced functionality and USAbility Clear and visible display for ease of reading measurements No waiting time between tests Simple and easy to use Light and portable for convenience Comes with protective carrying case SPECIFICATION Power & Battery 3 x AAA alkaline batteries (approximately 7 hours of continuous use) AC port to be used with appropriate Presidium Power Adaptor (not included) Recommended Operating Conditions Optimal Operating Temperature: 18°C – 27°C (65°F – 80°F) Storage Temperature: 10°C – 51°C (50°F – 124°F) Dimension & Weight Length: 165mm (6.50 inches) Width: 25mm (0.95 inches) Height: 40mm (1.57 inches) Weight (without batteries): 54 grams (1.90 oz) This item includes:30 Day Money Back GuaranteeFree Shipping (USA lower 48 states)Free Return Shipping (USA lower 48 states) Sold By FindingKing.