---
product_id: 171322191
title: "Gem Master R.I. Liquid 1.81 (Refractive Index liquid 1.81)"
brand: "gem master"
price: "€ 174.31"
currency: EUR
in_stock: true
reviews_count: 8
category: "Gem Master"
url: https://www.desertcart.hr/products/171322191-gem-master-r-i-liquid-1-81-refractive-index-liquid
store_origin: HR
region: Croatia
---

# Amber Glass 1.81 RI 10g/3.2ml Gem Master R.I. Liquid 1.81 (Refractive Index liquid 1.81)

**Brand:** gem master
**Price:** € 174.31
**Availability:** ✅ In Stock

## Summary

> 🔍 Elevate Your Experiments with Precision!

## Quick Answers

- **What is this?** Gem Master R.I. Liquid 1.81 (Refractive Index liquid 1.81) by gem master
- **How much does it cost?** € 174.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/171322191-gem-master-r-i-liquid-1-81-refractive-index-liquid)

## Best For

- gem master enthusiasts

## Why This Product

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

## Key Features

- • **Sleek & Secure:** Housed in premium amber glass to protect against UV degradation.
- • **Ready for Action:** Each bottle comes in its own protective box for easy storage and transport.
- • **Compact Convenience:** Lightweight at just 10 grams, perfect for on-the-go professionals.
- • **Precision Perfected:** Achieve unparalleled accuracy with our 1.81 refractive index liquid.
- • **Quality You Can Trust:** Engineered for reliability in laboratory and industrial applications.

## Overview

R.I. Liquid 1.81 is a high-quality refractive index liquid, meticulously packaged in an amber glass bottle to ensure optimal performance and protection. Each 10-gram bottle (3.2ml) is individually boxed for convenience, making it an essential tool for professionals seeking accuracy in their measurements.

## Description

desertcart.com: Gem Master Gem Master R.I. Liquid 1.81 (Refractive Index liquid 1.81)

Review: seems to work fine, good dropper with portion control - So far this seems to work fine. The bottle seems full with no crystals in it I can see (although the dark glass plus the full size wrap around label makes looking at the bottle challenging). Got a good clear RI reading of topaz, with it. Have not yet tested to see if it really allows RIs of up to1.81. Will leave a new review if it peters out lower than that (many liquids that say they go that high, really don't). Mainly I want to say that the dropper is a good one, a different design from the old glass rod type. You get good portion control putting the droplet on the window. The bottle was well packed and no signs of leaks.
Review: The real deal - Same product as you get from GIA for refractive index investigation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B07PMFB4TZ |
| Customer Reviews | 4.6 4.6 out of 5 stars (40) |
| Date First Available  | July 24, 2025 |

## Product Details

- **Brand:** Gem Master
- **Liquid Volume:** 3.2 Milliliters
- **UPC:** 640823602632

## Images

![Gem Master R.I. Liquid 1.81 (Refractive Index liquid 1.81) - Image 1](https://m.media-amazon.com/images/I/51-xp4dt8jL.jpg)
![Gem Master R.I. Liquid 1.81 (Refractive Index liquid 1.81) - Image 2](https://m.media-amazon.com/images/I/512cvEj3rOL.jpg)
![Gem Master R.I. Liquid 1.81 (Refractive Index liquid 1.81) - Image 3](https://m.media-amazon.com/images/I/31bxQ3JVUjL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ seems to work fine, good dropper with portion control
*by K***H on December 26, 2024*

So far this seems to work fine. The bottle seems full with no crystals in it I can see (although the dark glass plus the full size wrap around label makes looking at the bottle challenging). Got a good clear RI reading of topaz, with it. Have not yet tested to see if it really allows RIs of up to1.81. Will leave a new review if it peters out lower than that (many liquids that say they go that high, really don't). Mainly I want to say that the dropper is a good one, a different design from the old glass rod type. You get good portion control putting the droplet on the window. The bottle was well packed and no signs of leaks.

### ⭐⭐⭐⭐⭐ The real deal
*by M***K on March 4, 2025*

Same product as you get from GIA for refractive index investigation.

### ⭐⭐⭐⭐⭐ This is a liquid used for gem identification. Glad to know a supplier diversified a was on Amazon!
*by J***N on December 24, 2022*

Liked it came quickly as I was out. I'm a gemologist and use it for gemstone identification.

## Frequently Bought Together

- Gem Master Gem Master R.I. Liquid 1.81 (Refractive Index liquid 1.81)
- 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

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**Shop now:** [https://www.desertcart.hr/products/171322191-gem-master-r-i-liquid-1-81-refractive-index-liquid](https://www.desertcart.hr/products/171322191-gem-master-r-i-liquid-1-81-refractive-index-liquid)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-26*