Quartzite Gemstone: Properties, Meanings, Value & More
Quartzite is a rock almost entirely composed of quartz that comes in many colors. Is quartzite a gemstone? Yep, quartzite can be used in gemstone jewelry among other ornamental uses.
You’ve probably heard of quartz, which is often (incorrectly) used interchangeably with quartzite.
What is the difference between quartz and quartzite? Well, quartzite contains quartz, but the primary difference between quartz vs quartzite is that quartz is a mineral and quartzite is a rock. Rocks don’t have a set composition, as they’re made of multiple minerals.
Is quartzite rare? Yes – there are only a few quarries with significant quartzite deposits.
Today, we’ll go over all of quartzite’s properties and uses, along with its meaning, price, and history.
About Quartzite Stone
Quartzite is a semi-precious stone that can be used as an April birthstone. The name “quartzite” has a few meanings, though.
Most often, geologists say “quartzite” referring to metamorphic rocks almost entirely composed of quartz. In the past, geologists refer to sedimentary rocks mostly composed of quartz. These are now called “quartz arenite” to avoid confusion.
Quartzite Uses
Perhaps the most popular use of quartzite is in architecture, particularly countertops. Quartzite slabs are quite resistant to scratches, acid etching, and heat.
Other industrial uses include:
Sourcing silica for metallurgy
Creating silica brick
Paving roads and railroads
Shoreline protection (riprap)
Roofing
All these beneficial uses for quartzite are because of its geological properties.
Quartzite Specifications & Characteristics
As a rock, quartzite’s composition can slightly vary. But it’s almost entirely quartz a.k.a. silica, silicon dioxide, or SiO2. The predominant quartz makeup means quartzite’s hardness sits around 7 on the Mohs hardness scale.
This metamorphic rock is coarse-grained, meaning the granular minerals are visible without magnification. It’s also non-foliated, lacking layers or banding.
Most quartzite stones are white, gray, or pink, often with black or brown specks.
The stone’s tenacity (resistance to breaking) and stability (resistance to chemicals, temperature changes, humidity, and light) are both good.
List of quartzite properties:
Mohs hardness: Around 7
Color: Usually gray or white; Often shades of red or pink; Can be yellow, green, orange, or blue
Crystal structure: Trigonal
Luster: Dull, greasy, waxy, or vitreous (glassy)
Transparency: Translucent to opaque
Refractive index: 1.544-1.553
Density: 2.64-2.69
Cleavage: None
Fracture: Conchoidal or granular
Streak: White
Luminescence: None
Pleochroism: None
Birefringence: 0.009
Dispersion: None
Optical effects: Sometimes aventurescence
That aventurescence effect is seen in the most well-known type of quartzite: aventurine.
Pictured above: "Galaxy" aventurine cabochon
Types of Quartzite
The main variety of quartzite is aventurine or aventurine quartz. This rock, often mistaken for a mineral, is usually green but comes in other hues like pink, orange, blue, and more.
Aventurine is most known for its metallic glittering surface (an effect called aventurescence or schiller) caused by tiny platelets of inclusions like mica.
Other quartzite stones may be named for their color — like “green quartzite” — or the minerals that give them that color — like the fuchsite in “fuchsitic quartzite.”
Pictured above: Funerary Figure of Akhenaten. Date: ca 1353–1336B. C, New Kingdom, Amarna Period, Dynasty 18, reign of Akhenaten. Made of red quartzite.
Quartzite Gemstone Meaning & History
Quartzite’s spiritual properties and meanings generally tie to the stone’s color. For example, green quartzite’s spiritual meaning relates to growth, tranquility, and compassion. Meanwhile, the meaning of yellow quartzite ties to happiness, creativity, and fresh starts.
The name “quartzite” comes from its quartz content and the suffix -ite, comes from the Greek ites meaning “stone.”
Evidence of humans using quartzite for tools goes back over a million years. Though other stones like obsidian and chalcedony were usually preferred for cutting tools, quartzite was common for impact tools.
As mentioned earlier, the requirements for a rock to be quartzite have changed over time. The first distinction came in 1941 when geologists found quartzite-like rocks that weren’t metamorphic, naming these rocks “orthoquartzite” or “quartz arenite.” As of 1999, the British Geological Survey classifies quartzite as a metamorphic rock that’s at least 80 percent quartz.
The more modernly popular use of quartzite, countertops, started in the 1960s. Italian inventor Marcello Toncelli first patented quartz and resin slabs for countertops in 1963, naming the process “Bretonstone.”
Though quartzite isn’t as abundant as quartz, some areas with notable quartzite deposits have even been named for them, like Quartzsite, Arizona.
Enough geology, what does quartzite do spiritually?
Quartzite Healing Properties
Like its meanings, quartzite’s properties as a healing stone partly depend on its color. Green quartzite’s healing properties match other green gemstones, offering vitality, hope, and growth. Purple gemstones like purple quartzite can bring spiritual wisdom and intuition.
Energy healing with quartzite chakra stones is versatile: yellow quartzite opens the solar plexus, purple quartzite opens the crown, green or pink quartzite opens the heart, and blue quartzite opens the throat chakra.
Physical Healing
Purported physical quartzite benefits include treating:
Hyperactivity
Brain fog
PTSD
Arthritis
Emotional Healing
Emotionally, quartzite is said to encourage new beginnings, helping you stay calm and balanced during big life transitions. It may also encourage optimism, relieve sadness, and boost confidence.
Some crystal healers recommend only using quartzite as a healing stone alone, not with other stones.
Pictured above: Ring made from silver, found iron stamped with "ALPHA +" and white quartzite stone.| Image credit: the justified sinner, Flickr
Quartzite Gemstone Properties
Quartzite gemstone jewelry is not nearly as common as quartz jewelry, but it’s valued on similar properties like its color, cut, transparency, and treatments.
Color
The most common quartzite colors are white and gray, followed by shades of red and pink from iron oxide minerals like hematite. Other minerals can produce colors like yellow, orange, blue, or green. Some quartzite stones may have accents of these colors from smaller but diverse amounts of these mineral inclusions.
The most common color of aventurine, green, comes from fuchsite. Iron stains produce pink or red aventurine, while dumortierite inclusions lead to blue aventurine.
Cut
You may see faceted quartzite beads, but fully faceted cuts aren’t common for quartzite. Besides beads, quartzite gemstones are cut into cabochons or carvings. More intricate or elaborate shapes are more valuable.
Transparency
The majority of quartzite stones are opaque. Therefore, more translucent specimens carry higher value for their scarcity and beauty.
Treatments
Quartzite and its aventurine variety may be dyed to produce more desirable greens and other bright colors. The stone may also be impregnated with resin for stability and stain protection.
Treated stones are generally less valuable and their treatments should be identified by the seller.
Image credit: James St. John | Creative Commons Attribution 2.0 Generic license
Quartzite Formation & Sources
Quartzite starts as sandstone, which is made up of compressed sand-size grains. This sandstone is buried underground, where heat and pressure recrystallize the grains. The grains then merge into a denser, stronger rock of interlocking quartz grains.
In a nutshell, quartzite forms when quartz-rich sandstone undergoes metamorphism.
Most quartzite formed at convergent plate boundaries when two landmasses converged, forming mountains and depositing the sandstone onto a continental plate. The collision leads to the sandstone being buried, providing the heat and pressure required for it to metamorphose into quartzite.
This is why quartzite is often found in folded mountain ranges.
Mining Locations
The primary quartzite sources are Krivoy Rog, Ukraine, and Lake Superior, USA. Many quartzite deposits are in the Appalachian Mountains of North America, which go through 13 US states and 5 Canadian provinces:
Alabama
Georgia
Kentucky
Maryland
Mississippi
New York
North Carolina
Ohio
Pennsylvania
South Carolina
Tennessee
Virginia
West Virginia
Newfoundland and Labrador
Saint Pierre and Miquelon
Québec
Nova Scotia
New Brunswick
Other quartzite deposits are found in:
Argentina
Brazil
Canada
Chile
China
Colombia
India
Mexico
Peru
Spain
Russia
USA (Utah, Idaho, South Dakota, Texas, Minnesota, Wisconsin, Arizona)
Now, how much is quartzite worth?
Pictured above: Fuchsitic quartz | Image credit: James St. John | Creative Commons Attribution 2.0 Generic license
Quartzite Price & Value
While quartzite is slightly more expensive than quartz, it’s still an affordable gemstone.
Quartzite cabochons are generally around $1 per carat or lower.
Beaded quartzite jewelry like bracelets or necklaces are typically $3 to $10 each. Carved quartzite charms can be $2 to $5 each.
If we’re talking about countertops, quartzite countertops are roughly $70 to $200 per square foot, compared to about $60 to $150 per square foot for quartz countertops.
More intricate carvings can be pricier, from $40 to $100.
Quartzite jewelry may also be more expensive based on the value of the metals used.
Quartzite Care and Maintenance
Good news: gemstone care for quartzite is super easy. You can easily clean quartzite stones with mild soap, warm water, and a soft toothbrush.
For treated stones, avoid:
Ultrasonic cleaners
Steam cleaners
Harsh chemicals (e.g. household cleaners)
Store quartzite jewelry separately from other gems to avoid scratches to either.
Make A Fresh Start in Quartzite Jewelry!
Quartz may be the standard, but quartzite is a rarer, unique stone with earthy beauty. Whether you want the eye-catching sparkle of aventurine or the subtle charm of light pink quartzite, quartzite jewelry can help you start anew and turn heads while you’re at it.
Search the Gemstone Encyclopedia
Related Auctions
Related Articles
Originally the Birthstones or gemstones were associated with a zodiac sign or the month of a individuals birth. Find out what your stone is and view the stones we have for sale
8th Feb 2021
There are dozens of quartz and chalcedony gems with various colors and patterns. Learn all about quartz properties and every type of quartz, from amethyst and agate to plasma and phantom quartz!
15th Oct 2020
Hackmanite is a pink to violet sodalite gem known for its unique color-change and luminescence. Learn why hackmanite is special, from its rare qualities to the types of hackmanite jewelry available.
28th Mar 2018
Latest Articles
Tantalite is a group of red, brown, or black minerals containing the rare and valuable element tantalum. Discover the uses, history, prices, and properties of tantalite gemstones in this guide!
11th Nov 2024
Hodgkinsonite is a very rare collector’s gemstone known for its vibrant pink or purple hues, only found in New Jersey, USA. Learn hodgkinsonite’s prices, history, properties, and traits in this guide!
9th Jun 2024
Canasite is a rare mineral usually found as greenish-yellow inclusions in charoite but also known as a purple gemstone. Learn canasite’s history, varieties, properties, and prices in this guide.
27th May 2024
Article Categories
How To's is where you will find helpful articles from gem Rock Auctions on how to cut gemstones, select gemstones and buy gemstones.
9 Articles