Microcline
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
6.0 – 6.5
Specific Gravity
2.55 – 2.63
Refractive Index
1.514 – 1.539
Crystal System
amazonite
Luster
Vitreous
Cleavage
Perfect
Fracture
Uneven,Conchoidal
Color
various
Birefringence
0.008
Pleochroism
Weak
Mohs Hardness
| Mohs | Reference mineral | Microcline |
|---|---|---|
| 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 Microcline
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 Microcline
微斜长石是钾长石（KAlSi3O8）的低温三斜晶系晶型，与正长石（单斜）为同质多象，是长石族矿物中极为常见的品种，广泛存在于花岗岩、伟晶岩和片麻岩中，是地壳中分布最广的矿物之一。天河石（亚马逊石）是微斜长石最重要的宝石变种，呈蓝绿色，颜色由铅（偶有铷）元素致色，不透明至半透明，常有白色纹理，是市场上常见的蓝绿色装饰石材。折射率1.514至1.530，摩氏硬度6至6.5，有两组完全解理，日常佩戴需注意避免撞击。主要产地包括俄罗斯（乌拉尔和南部）、巴西、美国（科罗拉多州）和纳米比亚。
On this page
Jewelry Use
Durability
5/10
Science FYI Family
Frequently Asked Questions
What is Microcline?
微斜长石是钾长石（KAlSi3O8）的低温三斜晶系晶型，与正长石（单斜）为同质多象，是长石族矿物中极为常见的品种，广泛存在于花岗岩、伟晶岩和片麻岩中，是地壳中分布最广的矿物之一。天河石（亚马逊石）是微斜长石最重要的宝石变种，呈蓝绿色，颜色由铅（偶有铷）元素致色，不透明至半透明，常有白色纹理，是市场上常见的蓝绿色装饰石材。折射率1.514至1.530，摩氏硬度6至6.5，有两组完全解理，日常佩戴需注意避免撞击。主要产地包括俄罗斯（乌拉尔和南部）、巴西、美国（科罗拉多州）和纳米比亚。
What is the hardness of Microcline?
Microcline has a Mohs hardness of 6.0 to 6.5, making it moderate for use in jewelry.
What color is Microcline?
Microcline is primarily Various.
How much does Microcline cost?
Microcline falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Microcline?
Microcline belongs to the amazonite crystal system.