Almandine
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The most common and widespread garnet species, almandine owes its deep red to reddish-brown color to iron and aluminum within its isometric crystal structure. It grows in metamorphic rocks such as schist and gneiss, with gem-quality material drawn from India, Sri Lanka, Brazil, and the United States. A Mohs hardness of 7.0 to 7.5 gives it good wearability, and its velvety red long made it one of the most popular and affordable red stones, historically substituted for costlier ruby. Moderately priced among the semi-precious gems, almandine belongs to the garnet family and so serves as a January birthstone.
Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
7.0 – 7.5
Specific Gravity
3.95 – 4.3
Refractive Index
1.77 – 1.82
Crystal System
Isometric
Luster
Vitreous
Cleavage
Indistinct
Fracture
Conchoidal
Color
various
Dispersion
0.027
Pleochroism
Absent
Mohs Hardness
Mohs Hardness: 7.0 – 7.5
1 Soft10 Hard
Crystal System
Value & Market
Price Tier
Moderate ($50-500/ct)
Where to Buy Almandine
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.
Cultural Significance
Birthstone Month
1 (traditional)
About Almandine
알만딘은 철-알루미늄 규산염으로 이루어진 가넷 광물군에서 가장 흔한 종류로, 짙은 적색에서 적갈색을 띱니다. 터키 알만다(현 알라셰히르) 지역의 이름에서 유래했으며, 고대부터 '카벙클(carbuncle)'이라 불리며 보호의 부적으로 사용되었습니다. 전 세계에서 산출되며, 인도와 스리랑카의 알만딘이 특히 품질이 우수합니다.
Jewelry Use
Durability
7/10
Suitable for daily wear
Science FYI Family
Frequently Asked Questions
What is Almandine?
알만딘은 철-알루미늄 규산염으로 이루어진 가넷 광물군에서 가장 흔한 종류로, 짙은 적색에서 적갈색을 띱니다. 터키 알만다(현 알라셰히르) 지역의 이름에서 유래했으며, 고대부터 '카벙클(carbuncle)'이라 불리며 보호의 부적으로 사용되었습니다. 전 세계에서 산출되며, 인도와 스리랑카의 알만딘이 특히 품질이 우수합니다.
What is the hardness of Almandine?
Almandine has a Mohs hardness of 7.0 to 7.5, making it excellent for use in jewelry.
What color is Almandine?
Almandine is primarily Various.
How much does Almandine cost?
Almandine falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
Is Almandine a birthstone?
Yes, Almandine is the January birthstone (traditional).