---
product_id: 74717773
title: "Sinotech Digital Gem Refractometer Gdr800"
brand: "sinotech"
price: "S$656"
currency: SGD
in_stock: true
url: https://www.desertcart.sg/products/74717773-sinotech-digital-gem-refractometer-gdr800
store_origin: SG
region: Singapore
---

# Sinotech Digital Gem Refractometer Gdr800

**Brand:** sinotech
**Price:** S$656
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Sinotech Digital Gem Refractometer Gdr800 by sinotech
- **How much does it cost?** S$656 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/74717773-sinotech-digital-gem-refractometer-gdr800)

## Best For

- sinotech enthusiasts

## Why This Product

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

## Description

The Digital Gem Refractometer GDR800 is a nice optical instrument which will give a reading of the Refractive Index of a clean, flat, well-polished facet to reproducibility of 0.007RI Index Units. With covering the full Range from 1.30 to 2.99RI, It is an ideal instrument to identify the gem st1s. The importance is that it Can test the gem st1s Without requiring ANY messy, damaging contact oil.  Specification: -RI Test Range:1.30 to 2.99RI -Power Input: 9V Battery -Work Tempreature: 25-28oC Refractive Index of Some Gemst1 Quartz: 1.544-1.558RI Topaz: 1.63-1.64RI Ruby: 1.74-1.78RI Cubic Zirconia : 2.15-2.18RI Diamond: 2.37-2.46RI With Covering The Full Range From 1.30 to 2.99RI, It Can Test The Gem St1s Without Requiring ANY Messy, Damaging Contact Oil.

## Features

- RI Test Range:1.30 to 2.99RI
- Work Tempreature: 25-28C
- Quartz: 1.544-1.558RI
- Topaz: 1.63-1.64RI
- Ruby: 1.74-1.78RI

## Images

![Sinotech Digital Gem Refractometer Gdr800 - Image 1](https://m.media-amazon.com/images/W/WEBP_402378-T1/images/I/318XBdRVl+L.jpg)

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**Shop now:** [https://www.desertcart.sg/products/74717773-sinotech-digital-gem-refractometer-gdr800](https://www.desertcart.sg/products/74717773-sinotech-digital-gem-refractometer-gdr800)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-04-23*