---
product_id: 461333720
title: "Diamond Tester, Professional Jewelers' Gemstone Detector, High Accuracy Diamond Checker Pen Professional for Jewelers, Gem Tester (Jewelry-Only Detection)"
brand: "siziviki"
price: "A$28"
currency: AUD
in_stock: true
reviews_count: 13
category: "Siziviki"
url: https://www.desertcart.com.au/products/461333720-diamond-tester-professional-jewelers-gemstone-detector-high-accuracy-diamond-checker
store_origin: AU
region: Australia
---

# 30s preheat for precise calibration 9+ lights & beeps for diamond/moissanite Includes 9V battery & testing platform Diamond Tester, Professional Jewelers' Gemstone Detector, High Accuracy Diamond Checker Pen Professional for Jewelers, Gem Tester (Jewelry-Only Detection)

**Brand:** siziviki
**Price:** A$28
**Availability:** ✅ In Stock

## Summary

> 💎 Don’t just guess—verify your sparkle with pro precision!

## Quick Answers

- **What is this?** Diamond Tester, Professional Jewelers' Gemstone Detector, High Accuracy Diamond Checker Pen Professional for Jewelers, Gem Tester (Jewelry-Only Detection) by siziviki
- **How much does it cost?** A$28 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/461333720-diamond-tester-professional-jewelers-gemstone-detector-high-accuracy-diamond-checker)

## 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

- • **All-Inclusive Kit:** Comes with battery, testing platform, and detailed manual for seamless setup
- • **Pro-Level Calibration:** Critical 30-second preheat and precise indicator adjustment ensure flawless readings
- • **Jewelry-Only Detection:** Exclusively tests gemstones, avoiding false metal alerts for pure confidence
- • **Step-by-Step Video Guide:** Master the tester quickly with included troubleshooting and operation videos
- • **Pinpoint Gemstone Accuracy:** Sophisticated sensor delivers reliable diamond vs. fake detection every time

## Overview

The Siziviki Diamond Tester is a professional-grade gemstone detector designed exclusively for jewelry. Featuring a high-accuracy sensor with 9+ light and beep signals for diamonds and moissanite, it requires a 30-second preheat and precise calibration for optimal performance. The kit includes a 9V battery, testing platform, and comprehensive user manual plus video guide, ensuring reliable differentiation between genuine diamonds and imitations like cubic zirconia or glass. Ideal for jewelers and discerning buyers seeking trusted authenticity verification.

## Description

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

Review: Works well if you keep your finger on the metal plate - This does seem to work at least to let you know if it is diamond versus rhinestone. The instructions are missing information that almost made me return it... You need to have your finger on the metal plate and hold the item in your other hand for the metal alert to work. Using this information made the detector function properly and accurately.
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.

## Features

- ACCURATE DETECTION : Our professional diamond tester pen (a reliable gem tester) features a sophisticated sensor for precise gemstone identification (Diamonds/Moissanite: 9+ lights + beeps; Jade: 5-6 lights; Crystal/Glass: 5-7 lights). (Jewelry-Only Detection – Not for metal/gold or gold testing kit use)
- STANDARD OPERATION : Insert battery → Power on → MUST preheat 30s (critical) → Adjust indicator to 4th mark (do not skip) → Hold back metal plate → Probe 90° perpendicular to gemstone. Reset to 4th mark before each test
- METAL DETECTION NOTE : Not for metal/gold or gold testing kit use – metal has similar thermal conductivity to diamonds (normal beeping, not a defect). Consistent with title "Jewelry-Only Detection"
- PACKAGE CONTENTS : Diamond tester pen + user manual + 9V battery + testing platform. Read the manual first to maximize accuracy with your diamond detector
- PRECAUTIONS : Avoid windy/cold conditions (15-25℃ recommended); Keep probe perpendicular to gemstone; Turn off power after using this diamond checker
- SEAMLESS SHOPPING EXPERIENCE : Useful usage guidance for this diamond tester and gem tester is available via included resources. Note: Only valid for gemstone testing—non-diamond items cause incorrect readings
- VIDEO GUIDE INCLUDED : Step-by-step operation & troubleshooting video covers preheating, calibration, perpendicular alignment, solves 90% of usage issues

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B5DHYMWX |
| Adjustable Length | Yes |
| Batteries Required? | Yes |
| Best Sellers Rank | #2,184 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 (704) |
| 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 Checker Pen Professional for Jewelers, Gem Tester (Jewelry-Only Detection) - Image 1](https://m.media-amazon.com/images/I/61oqwz1fSbL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well if you keep your finger on the metal plate
*by L***M on January 27, 2026*

This does seem to work at least to let you know if it is diamond versus rhinestone. The instructions are missing information that almost made me return it... You need to have your finger on the metal plate and hold the item in your other hand for the metal alert to work. Using this information made the detector function properly and accurately.

### ⭐⭐⭐⭐⭐ 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.

### ⭐ Do not buy!
*by N***G on January 31, 2026*

Please don’t waste your money. I followed the instructions and my tester did not work. I was unable to return it in the usual way, which would be to go to Kohl’s. I would give them a zero star review if I could.

## Frequently Bought Together

- Diamond Tester, Diamond Detector, High Accuracy Diamond Tester Pen for Professional Jewelers, Gem Tester (Metal Detection Limitation)
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**Shop now:** [https://www.desertcart.com.au/products/461333720-diamond-tester-professional-jewelers-gemstone-detector-high-accuracy-diamond-checker](https://www.desertcart.com.au/products/461333720-diamond-tester-professional-jewelers-gemstone-detector-high-accuracy-diamond-checker)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-19*