---
product_id: 525186008
title: "Ade Advanced Optics GL500 Gemological Gemstone Gem Refractometer Built-In Light, Aluminum Body with Optic Lens"
brand: "ade advanced optics"
price: "₩15525"
currency: KRW
in_stock: false
reviews_count: 5
url: https://www.desertcart.kr/products/525186008-ade-advanced-optics-gl500-gemological-gemstone-gem-refractometer-built-in
store_origin: KR
region: South Korea
---

# Built-in LED illumination Precision 1.30-1.81 RI range All-metal durable build Ade Advanced Optics GL500 Gemological Gemstone Gem Refractometer Built-In Light, Aluminum Body with Optic Lens

**Brand:** ade advanced optics
**Price:** ₩15525
**Availability:** ❌ Out of Stock

## Summary

> 💎 Unlock the true brilliance of every gem with precision and style!

## Quick Answers

- **What is this?** Ade Advanced Optics GL500 Gemological Gemstone Gem Refractometer Built-In Light, Aluminum Body with Optic Lens by ade advanced optics
- **How much does it cost?** ₩15525 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/525186008-ade-advanced-optics-gl500-gemological-gemstone-gem-refractometer-built-in)

## Best For

- ade advanced optics enthusiasts

## Why This Product

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

## Key Features

- • **Travel-Ready Protection:** Comes with both hard and soft cases for secure storage and on-the-go convenience.
- • **Built-In LED Light Source:** Integrated illumination means no extra gear—test gems anytime, anywhere.
- • **Polarizing Filter Included:** Enhance clarity and differentiate single vs. double refracting stones effortlessly.
- • **Precision Gem Identification:** Measure refractive index with 0.01 accuracy for flawless gemstone verification.
- • **Robust All-Metal Construction:** Engineered for longevity and consistent performance in professional settings.

## Overview

The Ade Advanced Optics GL500 Gemological Refractometer is a professional-grade instrument designed for precise gemstone identification. Featuring a durable all-metal body, built-in LED lighting, and a polarizing filter, it measures refractive indices from 1.30 to 1.81 with 0.01 accuracy. Ideal for gemologists and jewelry professionals, it includes both hard and soft protective cases for portability and long-term use.

## Description

The Gemological refractometer is considered by many to be the most important of all gem testing instruments. The primary use of the refractometer is to measure the angle at which light traveling through the stone is bent or refracted. This is called Refractive Index (R.I.). As Refractive Index is usually different for different gemstones, this provides an important clue for accurate gemstone identification. Gemological refractometer also can be used to determine whether or not a stone is single or double refracting. For doubly refracting stone, based on the difference between 2 readings you obtain from the refractometer, strength of the gemstone's double refraction (birefringence) may be computed and it offers an important gem identification aid, as it differs from gem to gem. Also refractometer is one of the few instruments capable to give you information for opaque stones as well as transparent stones. Quality of the instrument is important to enable you to perform consistent and re test for years to come. Our refractometer has all metal construction with built-in light (no flashlight or any other light source required) and polarizing filter, allowing you to perform all needed tests, it comes with vinyl soft case with belt loop for convenience while traveling and hard case for safe storage. Features: All metal quality construction Built-in LED light source with 3 x 1.5v batteries - included Accuracy: 0.01 Measurement range: 1.30 - 1.81 Polarizing Filter Weight: 0.9 lb. Application: Gemology Hard and soft cases are included R.I. liquid is not included, please purchase certified R.I. oil from reputable sources. Please be aware that R.I. liquid is not included.

Review: After getting some duds in this price range, I was pleased to get this refractometer. It gives a good clear reading and feels like a quality instrument. This style is easier for me to use on faceted gems than the more $ GIA model. You need to order the RI fluid separately (expect to spend around $80 for the good stuff). My only complaint is that you better have extra batteries on hand in case you accidently leave the internal light on (there is a side push button), as there is no way to use an external light source. And the directions for the batteries and battery compartment don't match this instrument, but you can easily figure it out. Other than that, this is great quality and value.
Review: It seems that everyone’s experience buying this product is different. Mine came with a hard case but not a soft case and also i didn’t get any RI fluid which is pretty irritating because i can’t use it until i get the fluid. Also the shipping took a long time, and it was delayed on top of that.

## Features

- Quality all metal construction
- Measurement range of 1.30 - 1.81
- Built-in LED light source with 3 x 1.5v batteries - included
- Considered by many to be the most important of all gem testing instruments
- Polarizing Filter, Hard and soft cases are included

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071YCF11M |
| Batteries included? | No |
| Brand | Ade Advanced Optics |
| Color | Black |
| Customer Reviews | 4.2 4.2 out of 5 stars (39) |
| Date First Available | 16 April 2017 |
| Item model number | GL500 |
| Manufacturer | Ade Advanced Optics |
| Material type | PE_(Polyethylene), Aluminum Body with Optic Lens |
| Number of items | 1 |
| Package Dimensions | 22.2 x 14.71 x 10.69 cm; 19.84 g |
| Sport | Hunting |
| Style | hunting |

## Product Details

- **Brand:** Ade Advanced Optics
- **Colour:** Black
- **Item weight:** 0.7 Ounces
- **Magnification minimum:** 3 x
- **Manufacturer:** Ade Advanced Optics
- **Material:** PE_(Polyethylene), Aluminum Body with Optic Lens
- **Night vision:** No
- **Sport:** Hunting
- **Style:** hunting
- **UPC:** 757901788338

## Images

![Ade Advanced Optics GL500 Gemological Gemstone Gem Refractometer Built-In Light, Aluminum Body with Optic Lens - Image 1](https://m.media-amazon.com/images/I/61hx7rqXsvL.jpg)
![Ade Advanced Optics GL500 Gemological Gemstone Gem Refractometer Built-In Light, Aluminum Body with Optic Lens - Image 2](https://m.media-amazon.com/images/I/818KPh9wicL.jpg)
![Ade Advanced Optics GL500 Gemological Gemstone Gem Refractometer Built-In Light, Aluminum Body with Optic Lens - Image 3](https://m.media-amazon.com/images/I/815F6nFIAVL.jpg)
![Ade Advanced Optics GL500 Gemological Gemstone Gem Refractometer Built-In Light, Aluminum Body with Optic Lens - Image 4](https://m.media-amazon.com/images/I/81hFUVq+0TL.jpg)
![Ade Advanced Optics GL500 Gemological Gemstone Gem Refractometer Built-In Light, Aluminum Body with Optic Lens - Image 5](https://m.media-amazon.com/images/I/81PulsYFuyL.jpg)

## Questions & Answers

**Q: Can this be used with an external light source as well?**
A: no, it uses battery only.

**Q: Can i measure the refractive index with ade advanced optics gl 500 gemlogical gemstone gem refractometer without ri liquid and what happen ?**
A: No, you need the oil to have the refraction.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by K***H on 26 December 2024*

After getting some duds in this price range, I was pleased to get this refractometer. It gives a good clear reading and feels like a quality instrument. This style is easier for me to use on faceted gems than the more $ GIA model. You need to order the RI fluid separately (expect to spend around $80 for the good stuff). My only complaint is that you better have extra batteries on hand in case you accidently leave the internal light on (there is a side push button), as there is no way to use an external light source. And the directions for the batteries and battery compartment don't match this instrument, but you can easily figure it out. Other than that, this is great quality and value.

### ⭐⭐⭐⭐ Review
*by L***I on 30 September 2024*

It seems that everyone’s experience buying this product is different. Mine came with a hard case but not a soft case and also i didn’t get any RI fluid which is pretty irritating because i can’t use it until i get the fluid. Also the shipping took a long time, and it was delayed on top of that.

### ⭐⭐⭐⭐⭐ Review
*by J***. on 15 December 2024*

Works great and is easy to read.

## Frequently Bought Together

- Ade Advanced Optics GL500 Gemological Gemstone Gem Refractometer Built-in Light, Aluminum Body with Optic Lens
- Handheld Durable Small Diffraction Spectroscope 55mm Jewelers Eye Loupe Jewelry Magnifier for Gems Jewelry Rocks Stamps Coins Watches Hobbies Antiques Gems, Coins, Stamps
- Gem Master Gem Master R.I. Liquid 1.81 (Refractive Index liquid 1.81)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-01*