---
product_id: 461333720
title: "Diamond Tester, Professional Jewelers' Gemstone Detector, High Accuracy Diamond Tester Pen Professional for Professional Jewelers, Gem Tester (Metal Detection Limitation)"
brand: "siziviki"
price: "$27.00"
currency: USD
in_stock: true
reviews_count: 13
category: "Siziviki"
url: https://www.desertcart.us/products/461333720-diamond-tester-professional-jewelers-gemstone-detector-high-accuracy-diamond-tester
store_origin: US
region: United States of America
---

# 9-level precision LED indicator Battery-powered for portability 30-sec rapid preheat time Diamond Tester, Professional Jewelers' Gemstone Detector, High Accuracy Diamond Tester Pen Professional for Professional Jewelers, Gem Tester (Metal Detection Limitation)

**Brand:** siziviki
**Price:** $27.00
**Availability:** ✅ In Stock

## Summary

> 💎 Test Like a Pro, Shine Like a Star!

## Quick Answers

- **What is this?** Diamond Tester, Professional Jewelers' Gemstone Detector, High Accuracy Diamond Tester Pen Professional for Professional Jewelers, Gem Tester (Metal Detection Limitation) by siziviki
- **How much does it cost?** $27.00 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/461333720-diamond-tester-professional-jewelers-gemstone-detector-high-accuracy-diamond-tester)

## Best For

- siziviki enthusiasts

## Why This Product

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

## Key Features

- • **Fast & Easy Testing:** Ready to use in just 30 seconds with simple calibration for reliable, professional-grade results every time.
- • **Complete Testing Kit:** Includes tester pen, battery, testing platform, and step-by-step video guide for seamless setup and confidence.
- • **Avoid False Positives:** Designed exclusively for gemstone diamonds; metal detection limitations prevent misleading readings.
- • **Portable & User-Friendly:** Compact pen design powered by a 9V battery—perfect for on-the-go jewelers and gem enthusiasts.
- • **Pinpoint Gemstone Accuracy:** Sophisticated sensor system distinguishes diamonds from glass, jade, cubic zirconia, and more with 9-level LED clarity.

## Overview

The Siziviki Diamond Tester Pen offers professional jewelers and gemstone enthusiasts a high-accuracy, easy-to-use tool that distinguishes diamonds from other stones using a 9-level LED sensor system. With a quick 30-second preheat and portable battery-powered design, it ensures reliable testing on the go. The kit includes everything needed for precise gemstone verification, though it is not suitable for metal or non-diamond materials, preventing false positives and guaranteeing trustworthy results.

## Description

desertcart.com : Diamond Tester, Professional Jewelers' Gemstone Detector, High Accuracy Diamond Tester Pen Professional for Professional Jewelers, Gem Tester (Metal Detection Limitation) : Patio, Lawn & Garden

Review: It works. - It works. I’ve tested my real lab diamond earrings and blood diamond bracelets, and then I tested a cubic zirconia necklace and of course it did not pass! Great product.
Review: Inexpensive and functional - Look for the price this thing is fantastic

## Features

- ACCURATE DETECTION: Our diamond tester pen features a sophisticated sensor system that accurately identifies diamonds, with 5 lights for glass, 5-6 for jade, 5 for cubic zirconia, 7 for gemstone crystal, and 9 for diamonds and moissanite. It's designed to provide clear distinctions for various gemstones, ensuring you get precise results
- STANDARD OPERATION: Insert the battery, power on the gem tester, then preheat the tester for 30 seconds. Adjust the indicator to the fourth mark (Otherwise, inaccurate results may be obtained), press the triangular metal plate at the back with your finger, and position the probe perpendicular to the gemstone. For diamonds, the light will jump to the ninth segment or higher (red light area) and emit beeps. Always reset to the fourth mark before each test.
- METAL DETECTION RESTRICTIONS: The diamond tester is not designed for metal, gold, plastic, fingers type testing. When testing metals, it will emit a rapid beeping sound due to the similarity of the thermal conductivity of the metal to the diamond. It may mimic diamond readings and beep when exposed to high thermal conductivity products. Testing gemstone diamonds only
- PACKAGRE CONTENES: The diamond detector complete set includes a diamond tester pen, user manual, 9V battery and testing platform for your convenience. Before you begin testing, please carefully read the instructions and tips in the user manual to help you achieve the most accurate results from the diamond tester
- PRECAYTIONS: For accurate testing, avoid testing in windy conditions. Position the tip of the diamond tester professional perpendicular to the gemstone for accurate readings, observe the light pattern to determine the stone's authenticity. Always turn off the power after testing to conserve battery life
- SEAMLESS SHOPPING EXPERIENCE: Our dedicated customer service is ready to assist you with any questions you may have about product usage, ensuring you can fully leverage our diamond tester. Note: Only valid for gemstone diamond testing—non-diamond items will cause incorrect readings
- VIDEO GUIDE INCLUDED: For the easiest and clearest visual instructions, watch our step-by-step operation and troubleshooting video in the diamond detector images or description section

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B5DHYMWX |
| Adjustable Length | Yes |
| Batteries Required? | Yes |
| Best Sellers Rank | #2,612 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #2 in Jewelry Diamond Testers |
| Brand | Siziviki |
| Color | Black |
| Customer Reviews | 4.0 4.0 out of 5 stars (668) |
| Date First Available | June 29, 2022 |
| International Protection Rating | IP65 |
| Item Weight | 3.52 ounces |
| Item model number | 20 |
| Manufacturer | Siziviki |
| Material | Plastic |
| Power Source | Battery Powered |
| Product Dimensions | 5.31"L x 0.87"W x 1.57"H |
| UPC | 618087178460 |

## Product Details

- **Batteries Required?:** Yes
- **Brand:** Siziviki
- **Color:** Black
- **Material:** Plastic
- **Power Source:** Battery Powered

## Images

![Diamond Tester, Professional Jewelers' Gemstone Detector, High Accuracy Diamond Tester Pen Professional for Professional Jewelers, Gem Tester (Metal Detection Limitation) - Image 1](https://m.media-amazon.com/images/I/61oqwz1fSbL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ It works.
*by L***X on December 29, 2025*

It works. I’ve tested my real lab diamond earrings and blood diamond bracelets, and then I tested a cubic zirconia necklace and of course it did not pass! Great product.

### ⭐⭐⭐⭐⭐ Inexpensive and functional
*by E***Y on December 31, 2025*

Look for the price this thing is fantastic

### ⭐ Just beeps at me. Does nothing
*by K***R on December 6, 2025*

Turned it on and all the green, yellow and red lights stay on… while it constantly goes through a series of three beeps repeatedly. Been waiting 5 min and nothing changes. Volume dial is turned just enough to turn it on. Scrolling the wheel does nothing.

## Frequently Bought Together

- Diamond Tester, Diamond Detector, High Accuracy Diamond Tester Pen for Professional Jewelers, Gem Tester (Metal Detection Limitation)
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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-01-22*