Smoky Quartz
About
Smoky quartz is a brown to grey variety of quartz, ranging from light, almost transparent shades to deep, nearly opaque hues. Its colour is caused by natural irradiation affecting aluminium impurities within the quartz, giving it its characteristic smoky appearance. Found in many parts of the world, including Brazil, Switzerland, and the United States. It is commonly used in jewellery, crystal healing, and decorative objects.
Birthstones & Anniversaries
Smoky quartz is not a traditional birthstone, but it is often linked to the zodiac signs of Capricorn and Scorpio, symbolising stability and protection.
Crystal Healing Energy
Smoky quartz is all about grounding and protection — it’s like a steady anchor that keeps you balanced and centred. Known for its stabilising energy, this crystal resonates with the root chakra, creating a sense of calm while shielding you from negative vibes. Think of it as an energetic filter, absorbing and transforming stress and negative emotions, so you can stay in a clear, resilient headspace.
Smoky quartz is perfect for anyone looking to feel grounded and protected. Its soothing energy promotes clarity and emotional strength, making it a powerful companion for grounding, protection, and healing on a deep level.
Facts
Colour origin: The smoky colour in smoky quartz is caused by natural irradiation, affecting aluminium impurities within the quartz.
Scotland’s national gem: Smoky quartz, known as "Cairngorm" in Scotland, is considered the national gem, particularly found in the Cairngorm Mountains.
Widely available: Found globally, especially in Brazil, Madagascar, and the United States, making it a common and affordable gemstone.
Crystallised form: Smoky quartz often forms in large, well-formed crystals, making it a popular choice for collectors and cutting into jewellery.
Science
Mineral: Quartz
Crystal System: Trigonal
Chemistry: SiO₂
Colour: Light grey to deep brown, sometimes black
Refractive Index: 1.544 to 1.553
Birefringence: 0.009
Specific Gravity: 2.65
Mohs Hardness: 7
TreatmentsSmoky quartz is usually untreated, but lower quality stones can sometimes be artificially irradiated to enhance their colour. Heat treatment can also be applied to lighten overly dark specimens.
SyntheticsSynthetic smoky quartz is rare, as the natural material is abundant and inexpensive. However, synthetic quartz can be created in laboratories for specific industrial purposes.
ImitationsGlass is the most common imitation for smoky quartz, usually dyed to replicate the stone’s brown hues. These imitations often lack the internal clarity and natural inclusions found in natural smoky quartz.
similar materialsMorion: A very dark variety of smoky quartz, often nearly black in appearance.
Cairngorm: A specific variety of smoky quartz found in the Cairngorm Mountains of Scotland, often lighter and more golden in colour.
Obsidian: A volcanic glass that can sometimes be mistaken for dark smoky quartz, but is softer and has a different formation process.
Smoky Quartz Gallery
Why We love Smoky Quartz
Large CrystalsSmoky quartz often forms in large crystals, which are perfect for cutting into statement jewellery or used as display pieces.
affordableSmoky quartz offers an accessible price, making it ideal for a wide range of uses.
DurableWith a Mohs hardness of 7, smoky quartz is strong enough for everyday wear in jewellery, yet easy to care for.
Shop Smoky Quartz
Looking to feel more grounded?
Head over to Self & Others and explore our Smoky Quartz Collection! These pieces bring balance and protection when you need it most.
Other Varieties of Crystalline Quartz
