~Terms & Conditions

~Use the discount code “TAKEFIVE” to reduce the current website prices of eligible products by 5% at checkout. Discount cannot be used in conjunction with other promotional offers. Kogan New Zealand has millions of items available for sale, and some current website prices may change while this offer is available, and/or may have changed recently. Promotion applies to prices at time of checkout, as displayed at checkout. Eligible products are only available while stock lasts. Discount is applicable for Kogan FIRST customers only. For a list of eligible products, click here. The discount code “TAKEFIVE” will expire at 11:59PM (AEST) 20 APRIL 2026 unless extended. Discount codes cannot be used in conjunction with any other offers. For instructions on how to redeem a discount code, click here.

This professional diamond tester pen is perfect for identifying genuine diamonds with precision. Its LED and audio indicators make it easy to confirm results instantly.

The tool comes with a testing platform for loose stones, a carrying case for portability, and is powered by a standard 9V battery.

Whether you’re a jeweller, collector, or beginner, this tester ensures dependable diamond verification anytime, anywhere.

Main Features:

Simple Operation – Easy to use with straightforward testing steps.
LED & Audio Indicators – Red light + beep sound confirms a real diamond.
Adjustable Calibration – Suitable for stones of different sizes.
Reliable & Accurate – Provides consistent and trustworthy results.
Testing Platform Included – Designed for loose stones.
Portable & Lightweight – Compact size with a convenient carrying case.
Beginner & Expert Friendly – Ideal for professional jewellers and hobbyists alike.

Specifications:

Power Supply: 1 x DC006P 9V Battery
Item Size: 16 × 4 × 2 cm (6.6 × 1.6 × 0.8 in)
Item Weight: 62 g (2.2 oz)
Package Size: 18.5 × 5.6 × 3.5 cm (7.3 × 2.2 × 1.4 in)
Package Weight: 157 g (5.5 oz)

We are a New Zealand business & send our products we sell directly from our suppliers to you. Our stock is sent from one of our suppliers fulfilment centres in Australia, the USA or China, depending on which centre can get it to you the fastest. Products purchased from us are usually delivered within 5 – 12 days. All orders have tracking so you can keep an eye on your order at any time.

~Terms & Conditions

This professional diamond tester pen is perfect for identifying genuine diamonds with precision. Its LED and audio indicators make it easy to confirm results instantly.

The tool comes with a testing platform for loose stones, a carrying case for portability, and is powered by a standard 9V battery.

Whether you’re a jeweller, collector, or beginner, this tester ensures dependable diamond verification anytime, anywhere.

Main Features:

Simple Operation – Easy to use with straightforward testing steps.
LED & Audio Indicators – Red light + beep sound confirms a real diamond.
Adjustable Calibration – Suitable for stones of different sizes.
Reliable & Accurate – Provides consistent and trustworthy results.
Testing Platform Included – Designed for loose stones.
Portable & Lightweight – Compact size with a convenient carrying case.
Beginner & Expert Friendly – Ideal for professional jewellers and hobbyists alike.

Specifications:

Power Supply: 1 x DC006P 9V Battery
Item Size: 16 × 4 × 2 cm (6.6 × 1.6 × 0.8 in)
Item Weight: 62 g (2.2 oz)
Package Size: 18.5 × 5.6 × 3.5 cm (7.3 × 2.2 × 1.4 in)
Package Weight: 157 g (5.5 oz)

High Accuracy Diamond Tester Pen - Professional Jewlery Selector for Beginners & Experts

Finance Available

Product Details

Specifications

Warranty & Returns

You May Also Like

Join millions of shoppers getting what they want for less!

We are here to help!