Diamond Tester
Table of Sizes

Table of Sizes
Ring length options
We have already listed some steps for you to choose your right size for rings.
Step1: Cut a thin strip of paper; Wrap the paper around your finger. Make sure it's snug.

Step 2: Mark with a pen where the end meets and measure length on a ruler from tip to pen mark and check the corresponding diameter data below.

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Bracelet length options
We have already listed some steps for you to choose your right size for bracelets.
Step 1: Measure your wrist with a flexible tap measurement or a strip of paper just below the wrist bone, where you normally wear the bracelet. (Please be noted that if you are using a plain strip of paper mark your size with a pencil or pen then use a rule to measure it.)
Step 2: Add one inch, or 2.5 centimeters, onto this measurement to get the final length of your bracelets. (Please be noted that a bracelet is perfectly sized when you measure your wrist tightly and add 2 or 3 cm. If you are between sizes, ask yourself how you like to wear your bracelet. If you wear it tightly choose the smaller size and if you like to wear it loosely take the next size up.)
Note: When you receive a new bracelet it will feel stiff, which can make it uncomfortably tight. The bracelet will quickly soften and become more flexible as you wear it.
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Chain length options

This Diamond Tester is a must-have for any diamond enthusiast! It's easy to use – just touch your finger to the metal plate on the back of the instrument, and touch the metal probe of the thermal conductivity meter vertically to the diamond surface. If 10 lights are fully on and the beep sounds, it means that the tested diamond is true Drill, otherwise imitation.
It's also portable, so you can take it with you wherever you go! And at this amazing price, there's no excuse not to get one.
- Size: 135×40×23 mm
- Material: metal + engineering plastic
- Power supply specifications: 9V battery-powered
- Weight: 66 grams (without battery)
- Scope of application: diamond identification, gem hardness testing