Dumortierite
Embed This Widget
Add the script tag and a data attribute to embed this widget.
Embed via iframe for maximum compatibility.
<iframe src="https://gemfyi.com/iframe/entity/dumortierite/" width="420" height="400" frameborder="0" style="border:0;border-radius:10px;max-width:100%" loading="lazy"></iframe>Paste this URL in WordPress, Medium, or any oEmbed-compatible platform.
https://gemfyi.com/entity/dumortierite/Add a dynamic SVG badge to your README or docs.
[](https://gemfyi.com/entity/dumortierite/)Use the native HTML custom element.
Add one script tag to your page:
<div data-gemfyi="entity" data-slug="dumortierite"></div>
<script src="https://cdn.jsdelivr.net/npm/gemfyi-embed@1/dist/embed.min.js" defer></script>
Embed as an iframe:
<iframe src="https://gemfyi.com/iframe/entity/dumortierite/?style=modern&theme=light" width="420" height="400" frameborder="0" loading="lazy" style="border:0;border-radius:10px;max-width:100%"></iframe>
Paste the URL in WordPress, Medium, or Ghost:
https://gemfyi.com/zh-hans/gems/dumortierite/
Shields.io-compatible SVG badge:
Web Component:
<gemfyi-entity slug="dumortierite"></gemfyi-entity>
<script src="https://cdn.jsdelivr.net/npm/gemfyi-embed@1/dist/embed.min.js" defer></script>
Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
7.0 – 8.5
Specific Gravity
3.26 – 3.41
Refractive Index
1.669 – 1.723
Crystal System
Orthorhombic
Luster
Vitreous
Cleavage
Good
Fracture
Conchoidal
Color
various
Birefringence
0.011
Pleochroism
Strong trichroism for rare red-brown crystals: black - red brown - brown
Mohs Hardness
| Mohs | Reference mineral | Dumortierite |
|---|---|---|
| 1 | Talc | |
| 2 | Gypsum | |
| 3 | Calcite | |
| 4 | Fluorite | |
| 5 | Apatite | |
| 6 | Orthoclase | |
| 7 | Quartz | ● |
| 8 | Topaz | ● |
| 9 | Corundum | |
| 10 | Diamond |
Crystal System
Value & Market
Price Tier
Moderate ($50-500/ct)
Where to Buy Dumortierite
Blue Nile
Fine jewelry retailer
James Allen
Gemstone jewelry
Brilliant Earth
Ethically sourced gems
Amazon
Wide selection
Links may earn a commission at no extra cost to you.
About Dumortierite
蓝线石是一种富含铝的硼硅酸盐矿物，以其深蓝色至蓝紫色著称，颜色深沉而均匀。在宝石市场上，蓝线石通常以含纤维状集合体的蓝色石英形式出现，被称为'蓝线石英'，颜色酷似青金石但更为均一。蓝线石主要产于纳米比亚、巴西、美国和法国，因其独特的蓝色调常被用于制作项链珠、雕刻品和弧面型宝石。
On this page
Jewelry Use
Durability
7/10
Suitable for daily wear
Science FYI Family
Frequently Asked Questions
What is Dumortierite?
蓝线石是一种富含铝的硼硅酸盐矿物，以其深蓝色至蓝紫色著称，颜色深沉而均匀。在宝石市场上，蓝线石通常以含纤维状集合体的蓝色石英形式出现，被称为'蓝线石英'，颜色酷似青金石但更为均一。蓝线石主要产于纳米比亚、巴西、美国和法国，因其独特的蓝色调常被用于制作项链珠、雕刻品和弧面型宝石。
What is the hardness of Dumortierite?
Dumortierite has a Mohs hardness of 7.0 to 8.5, making it excellent for use in jewelry.
What color is Dumortierite?
Dumortierite is primarily Various.
How much does Dumortierite cost?
Dumortierite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Dumortierite?
Dumortierite belongs to the Orthorhombic crystal system.