Garnet
A variety of Minerals

What is Garnet?
Garnets ( /ˈɡɑːrnɪt/) are a group of silicate minerals that have been used since the Bronze Age as gemstones and abrasives. All species of garnets possess similar physical properties and crystal forms, but differ in chemical composition. The different species are pyrope, almandine, spessartine, grossular (varieties of which are hessonite or cinnamon-stone and tsavorite), uvarovite and andradite. The garnets make up two solid solution series: pyrope-almandine-spessartine (pyralspite) and uvarovite-grossular-andradite (ugrandite).
Etymology & Origins
The word garnet comes from the 14th‑century Middle English word gernet, meaning 'dark red'. It is borrowed from Old French grenate from Latin granatus, from granum ('grain, seed'). This is possibly a reference to mela granatum or even pomum granatum ('pomegranate', Punica granatum), a plant whose fruits contain abundant and vivid red seed covers (arils), which are similar in shape, size, and color to some garnet crystals. Hessonite garnet is also named 'gomed' in Indian literature and is one of the 9 jewels in Vedic astrology that compose the Navaratna.
Healing Properties
Considered to be connected with creativity and love, garnet is a protective stone that can be used as a talisman. It is said that its best virtues, among many, are grounding and energizing, but this stone is also known to balance energy and brings courage. With its amazing healing properties, it affects all chakras in the body.
Optical Properties
- Refractive Index
- 1.714-1.888
- Pleochroism
- None to weak
- Optical Character
- Isotropic
- Dispersion
- 0.024-0.028
Discover Values
This stone excels in popularity, beauty.
Garnet Market Value Calculator
Estimate the market value of Garnet using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Garnet Localities Map
See where Garnet is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
The Meaning
Garnet is one of the oldest known gemstones. It's a birthstone of January and it's associated with the zodiac signs of Capricorn and Aquarius. According to the Jewish legend, Noah bought garnet to the Ark to use it as a source of light. For this same reason, travelers carried garnet to guide them on their journeys. The stone was commonly used by Anglo Saxons and Vikings as a talisman during battles as they believed it improved their ability to fight.
Key Characteristics
Characteristics of Garnet
Garnet species are found in every colour, with reddish shades most common. Blue garnets are the rarest and were first reported in the 1990s. Garnet species' light transmission properties can range from the gemstone-quality transparent specimens to the opaque varieties used for industrial purposes as abrasives. The mineral's luster is categorized as vitreous (glass-like) or resinous (amber-like).
Composition of Garnet
Garnets are nesosilicates having the general formula X3Y2(SiO4)3. The X site is usually occupied by divalent cations (Ca, Mg, Fe, Mn) and the Y site by trivalent cations (Al, Fe, Cr) in an octahedral/tetrahedral framework with [SiO4] occupying the tetrahedra. Garnets are most often found in the dodecahedral crystal habit, but are also commonly found in the trapezohedron habit as well as the hexoctahedral habit. They crystallize in the cubic system, having three axes that are all of equal length and perpendicular to each other, but are never actually cubic because, despite being isometric, the {100} and {111} families of planes are depleted. Garnets do not have any cleavage planes, so when they fracture under stress, sharp, irregular (conchoidal) pieces are formed.
More Images


Quick Facts
Physical Properties
- Color
- Red, orange, yellow, green, purple, pink, brown, black, colorless
- Hardness (Mohs)
- 7
- Density
- 3.9 g/cm³
- Streak
- White
- Luster
- Vitreous to resinous
- Crystal System
- Isometric
Chemical Properties
- Chemical Formula
- X3Y2(SiO4)3
- Elements
- Si, O, Al, Fe, Mg, Ca, Mn, Cr

Identify Garnet Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you


%252FAbenakiite-(ce)-01.jpg&size=small)

