---
product_id: 386129519
title: "Presidium Duo Tester PDT Diamond Gemstone Tester"
brand: "presidium"
price: "235.11 OMR"
currency: OMR
in_stock: true
url: https://www.desertcart.com.om/products/386129519-presidium-duo-tester-pdt-diamond-gemstone-tester
store_origin: OM
region: Oman
---

# 15 color dial Tests gems 0.02ct 0.6mm probe tip Presidium Duo Tester PDT Diamond Gemstone Tester

**Brand:** presidium
**Price:** 235.11 OMR
**Availability:** ✅ In Stock

## Summary

> 💎 Unleash Your Inner Gemologist!

## Quick Answers

- **What is this?** Presidium Duo Tester PDT Diamond Gemstone Tester by presidium
- **How much does it cost?** 235.11 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/386129519-presidium-duo-tester-pdt-diamond-gemstone-tester)

## Best For

- presidium enthusiasts

## Why This Product

- Trusted presidium brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Modern:** Sleek design fits perfectly in any professional toolkit.
- • **Reliable Results:** Consistent performance ensures you never second-guess your findings.
- • **Precision Testing:** Experience the industry's thinnest probe tip for unmatched accuracy.
- • **User-Friendly Design:** Large analog dial makes gemstone identification a breeze.
- • **Battery Powered Convenience:** No batteries required, just grab and go!

## Overview

The Presidium Duo Tester PDT is a state-of-the-art diamond and gemstone tester featuring a retractable thermoelectric probe tip, measuring just 0.6mm, allowing for precise testing of even the smallest gemstones. With a large, easy-to-read analog dial displaying 15 colored gemstones, this device guarantees consistent and reliable results, making it an essential tool for professionals in the jewelry industry.

## Description

Duo Tester PDT Diamond Gemstone Tester

## Features

- Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstone
- Industrys thinnest probe tip (0.6mm) for testing gemstones as small as 0.02ct
- Large easy to read analog dial with 15 colored gemstones
- Consistent and reliable results every time
- Simple and easy to use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Presidium |
| Part number | PSPDTS7 |
| Item Weight | 703 g |
| Package Dimensions | 20.07 x 11.68 x 9.65 cm; 703.06 g |
| Item model number | PDT-S7 |
| Color | Black |
| Style | Compact, Modern |
| Material | Other |
| Power source type | Battery Powered |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** Presidium
- **Power source:** Battery Powered
- **Style:** Compact, Modern
- **Colour:** Black
- **Item weight:** 0.7 Kilograms

## Images

![Presidium Duo Tester PDT Diamond Gemstone Tester - Image 1](https://m.media-amazon.com/images/I/71ouVg+sYEL.jpg)

## Questions & Answers

**Q: Does this test for Moissanite ?**
A: The DuoTester can test Conductivity of Moissanite, and also Reflectivity if your Moissanite sample is a cut gem with a flat surface.  In the Conductivity test, Moissanite would read into the Diamond range, narrowing the question to either Diamond or Moissanite.  But then the Reflectivity test should separate the two species because Moissanite is more reflective than Diamond.

**Q: Does the duo tester work for torquise?**
A: No torquise is not a reflective stone.

**Q: Does this model work for rough diamonds that show no clarity and just came out of the soil? This exact model not another model please.**
A: i do not test rough diamonds that show no clarity and just came out of the soil.
the technical specs for the device is not totally dependent on the clarity ...yet is based on both their thermal conductivity and reflective indexes.

**Q: How much voltage, frequeny and wattage?**
A: This is not a voltage meter. It measures the density of a gem stone to determine gem type. Your question does not make any since.

## Frequently Bought Together

- Presidium Duo Tester PDT Diamond Gemstone Tester
- Professional Gold, Silver, Platinum Jewelry Testing Kit with Stone Instructions and Box with 30X Eye Loupe Magnifier Precious Metals 10K 14K 18K 24K 999 925 Scrap

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**Shop now:** [https://www.desertcart.com.om/products/386129519-presidium-duo-tester-pdt-diamond-gemstone-tester](https://www.desertcart.com.om/products/386129519-presidium-duo-tester-pdt-diamond-gemstone-tester)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-01-26*