---
product_id: 237427228
title: "Natural Blue Sapphire Rough Gemstones 8-200 Carats Raw Crystals and Healing Stones Loose Gemstone Necklace For Women And Men"
brand: "gemhub"
price: "¥2673"
currency: JPY
in_stock: true
reviews_count: 13
category: "Gemhub"
url: https://www.desertcart.jp/products/237427228-natural-blue-sapphire-rough-gemstones-8-200-carats-raw-crystals
store_origin: JP
region: Japan
---

# Heat-treated for enhanced brilliance AAA grade clarity & color 15 Ct rare natural sapphire Natural Blue Sapphire Rough Gemstones 8-200 Carats Raw Crystals and Healing Stones Loose Gemstone Necklace For Women And Men

**Brand:** gemhub
**Price:** ¥2673
**Availability:** ✅ In Stock

## Summary

> 🔷 Own the rare blue fire—craft your legacy with GEMHUB’s natural sapphires!

## Quick Answers

- **What is this?** Natural Blue Sapphire Rough Gemstones 8-200 Carats Raw Crystals and Healing Stones Loose Gemstone Necklace For Women And Men by gemhub
- **How much does it cost?** ¥2673 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/237427228-natural-blue-sapphire-rough-gemstones-8-200-carats-raw-crystals)

## Best For

- gemhub enthusiasts

## Why This Product

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

## Key Features

- • **Raw & Unique:** No two stones are alike—embrace the natural, raw beauty that adds exclusive character.
- • **Durable Elegance:** Sapphire’s toughness rivals diamonds, perfect for lasting jewelry masterpieces.
- • **Certified Authenticity:** Each stone is expert-verified and certified, ensuring top-tier quality you can trust.
- • **Versatile Crafting Gem:** Ideal for jewelers, designers, and collectors seeking standout loose gemstones.
- • **Vibrant Blue Brilliance:** Experience the rare, highly saturated medium-dark blue that sets your creations apart.

## Overview

GEMHUB Natural Blue Sapphire Rough Gemstones offer 15 carats of AAA-grade, heat-treated raw sapphires with vibrant medium-dark blue hues. Expert-certified for authenticity and quality, these unique, durable stones are perfect for jewelers and designers aiming to create exclusive, high-impact jewelry pieces.

## Description

Buy GEMHUB Rough Natural Sapphire 15.00 Ct Rare Raw Blue Loose Gemstone for Jewelry Making: Shop top fashion brands Loose Gemstones at desertcart.com ✓ FREE DELIVERY and Returns possible on eligible purchases

Review: Good value but can't predict the shape. - It came with a certificate and was as described with the exception of the shape. I am guessing that the seller uses one picture for a lot of similar sizes gems. I plan to use this one as a practice for gem cutting but was hoping for something a bit less irregular. Either way you can't really beat the price. The 2nd one I received was even better. It still was cloudy but was a lot more translucent and a much better shape. Its very pretty just not transparent.
Review: Nice - Nice.

## Features

- The color of a blue sapphire is more important than its clarity. Sapphires are rarely completely clean and even very expensive stones can be slightly included. Subtle differences in color can make great variations in valuations of fine gemstones. Fine loose gemstones of good color and clarity are always rare and valuable. Highly saturated medium or medium dark blue tones are best, blue sapphires which are too dark or too light are worth considerably less.
- Color zoning is responsible for certain Sapphires having lighter and darker colors in different parts of a crystal. Some Sapphire gemstones may even be multicolored such as purple and blue. Sapphire is a tough and durable gem, and the only natural gemstone harder than Sapphire is Diamond. Despite this, Sapphire is still subject to chipping and fracture if handled roughly, and care should be taken to ensure it is properly handled.
- Display a lighter and more intense color when viewed at different angles. Some pleochroic Sapphire is blue when viewed at one angle, and purple at a different angle. Color zoning, which forms from growth layers that build up during the formation of the stone, may also be present in certain Sapphires.
- Our Expert gemologists verified this Blue Sapphire which passed many quality base tests and get stone certified through which we are completely assured of Top Quality Gemstone. Only after that, we deliver stones to you because we also, care about your loved ones.
- Perfect For: Jewelers, Jewelry makers, Goldsmiths, Designers, Craftsmen, Collectors or a gift for the special one. Each and every stone is unique and you will receive ones similar to the image shown.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07MC4CHZM |
| ASIN  | B0D7YTFTYY |
| Best Sellers Rank | #170,338 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #5 in Loose Gemstones |
| Brand Name | GEMHUB |
| Clasp Type | no-clasp-type |
| Customer Reviews | 3.9 3.9 out of 5 stars (809) |
| Date First Available  | June 24, 2024 |
| Department  | Unisex Adult |
| Gem Type | Sapphire |
| Grade Rating | AAA |
| Manufacturer | Hamlet e commerce |
| Metal Stamp | Sterling silver |
| Primary Stone Gem Type | Sapphire |
| Ring Size | 4 |
| Stone Clarity | SI1 |
| Stone Color | blue |
| Stone Cut | Very Good |
| Stone Treatment Method | Heat-treated |
| Stone Weight | 15 Carats |
| Total Gem Weight | 15 carats |
| Unit Count | 1 Count |

## Images

![Natural Blue Sapphire Rough Gemstones 8-200 Carats Raw Crystals and Healing Stones Loose Gemstone Necklace For Women And Men - Image 1](https://m.media-amazon.com/images/I/61KNISfSwBL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Where do these gemstones come from?**
A: These gemstones come from all across the world from the thousands of mines present. They are mined and shipped to us where we process them into small manageable pieces for you to geek over!

**Q: What type of treatment is done on these?**
A: They are heated and then a solution of borax is sprinkled on top to enhance its color. However this can be washed off with strong soap and lukewarm water. So if you want to marvel over the true color of these beauties go for it!

**Q: Why choose rough gems?**
A: Rough gems are the purest form of the gemstone experience. As a collector rough gems is what you always want. While cut and polished gemstones do look better they cant match the charm of these unearthed raw marvels of nature.

**Q: Why choose GEMHUB?**
A: Here at GEMHUB we put our valued customers on top of everything. Because it is you who make us into what we are. We offer unmatched quality, cost effectiveness and service to our customers. Once you give us a chance we will not disappoint you!

**Q: What are our most popular rough gems?**
A: Our most popular rough gems are Green Emerald, Aquamarine, Red Ruby and Blue Sapphire. Other than these Calcite, Pyrite, Jade, Topaz and Turquoise are quite popular as well.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good value but can't predict the shape.
*by A***S on July 14, 2025*

It came with a certificate and was as described with the exception of the shape. I am guessing that the seller uses one picture for a lot of similar sizes gems. I plan to use this one as a practice for gem cutting but was hoping for something a bit less irregular. Either way you can't really beat the price. The 2nd one I received was even better. It still was cloudy but was a lot more translucent and a much better shape. Its very pretty just not transparent.

### ⭐⭐⭐⭐⭐ Nice
*by H***K on November 19, 2025*

Nice.

### ⭐ Should hjave read the comments beefore buying
*by L***R on February 27, 2026*

I bought two of these stones and the color is enhanced. I put the stone in boiling water and the purple dye rubbed off! They claim it is a natural sapphire. Who knows what I got.

## Frequently Bought Together

- GEMHUB Natural Blue Sapphire Rough Gemstones 8-200 Carats Raw Crystals and Healing Stones Loose Gemstone Necklace For Women And Men
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**Shop now:** [https://www.desertcart.jp/products/237427228-natural-blue-sapphire-rough-gemstones-8-200-carats-raw-crystals](https://www.desertcart.jp/products/237427228-natural-blue-sapphire-rough-gemstones-8-200-carats-raw-crystals)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-18*