Smoky and cognac quartz
Brown quartz, Mohs 7, colored by natural radiation acting on trace aluminum. "Cognac quartz" is a bead-trade name for warm golden-brown smoky quartz, not a separate variety. Sources: Brazil, Madagascar, Colorado.
At a glance
| Hardness (Mohs) | 7 |
|---|---|
| Family | Quartz |
| Where it is mined | Brazil, Madagascar, Colorado |
| Catalog shapes | Heishi, Rondelles |
| Strands listed | 4 |
A representative photograph of smoky and cognac quartz from our archive. Tap a photograph to zoom in. Individual strands vary; request a current photo before ordering.
Smoky and cognac quartz in motion
Original strand photographs in nature settings, with full-strand and close-up views. Includes AI-assisted motion, scenery and instrumental music. View the original photographs for product detail.
How to judge it
Clear brown you can read through, even bead to bead. Look-alikes: glass (bubbles), brown obsidian (shell-like chips, no zoning).
What it's like to work with
Neutral, earthy palettes, men's bracelets, autumn lines; a cheap partner for citrine. Smooth rondelles and heishi.
Care
Everyday durable. Warm soapy water; ultrasonic fine. Strong heat can lighten it.
No birthstone; tradition calls it a grounding stone.
A brown you can read straight through.
Hold a strand to a window and the brown reads clear through it, tea at the light end, cola at the dark. Cognac is the warm middle, a gold-brown like a maple leaf on the day it turns. Faceted, the small planes catch and throw sparks in a color that stays quiet. Makers reach for it because it sits well beside copper and black leather, and because a good strand asks very little of a budget.
Where it comes from
The brown comes from natural radiation given off by the surrounding rock, working on traces of aluminum caught in the quartz. The Cairngorm Mountains in Scotland gave the stone one of its old names, cairngorm. Fine crystals have long come from St. Gotthard in Switzerland. It is found in Brazil and Madagascar, and Colorado produces it as well. Because it is common and often comes clean and large, smoky quartz was never an important gemstone in earlier centuries. It found a place in jewelry only in recent times, and mostly as an affordable one. Cognac is a bead-trade name rather than a separate variety, used for the warm golden-brown end of the range, a matter of tone. Our strands are cut in Jaipur, India. We choose them strand by strand in Cupertino, California.
What tradition says
In crystal tradition smoky quartz is called a grounding stone, the one people are told to hold when they feel scattered or pulled in too many directions. It is said to draw the attention back down into the body and the day at hand, the way a heavy coat settles a person in wind. The dark end of the color gets much of the credit in that telling, since brown is the color people associate with soil and bark and the underside of things. Those who follow the tradition often keep a piece somewhere ordinary, in a pocket or on a desk, so it comes to hand without ceremony. These are beliefs carried along with the stone.
These are beliefs people have held about the stone, told as tradition. They are not claims, and not advice.
How makers use it
Faceted hearts and pears do the most work here. We stock them at 4x6mm and 7mm. The smaller stones run through a strand as spacing between metal or wood, and a single one drops well from a chain. The larger size holds a center in a bracelet, or makes a pair of earrings with weight but not bulk. Brown carries neutral palettes and autumn lines, and it turns up often in men's bracelets. It partners with citrine for very little. A stronger strand shows even color bead to bead, clear enough to read through, with each facet giving a distinct flash rather than a dull glow. We currently list two strands.
Looking after it
At 7 on the Mohs scale this is an everyday stone that takes ordinary wear well. Warm water with a little mild soap and a soft brush is enough, and an ultrasonic cleaner is fine. Keep it away from strong heat, whether a dashboard in summer sun or a torch on the bench, since heat can lighten the brown.
Sources: Smoky Quartz: A transparent brown gem & gem material, Smoky quartz: The brown gemstone smoky quartz information and pictures · Minerals.net, Smoky quartz | Healing, Metaphysical & Grounding | Britannica, Smoky Quartz
Smoky and cognac quartz strands
Catalog examples. Contact us to confirm current photographs, price, and availability.
Whisky Quartz Faceted Rondelle, Golden, 8-17 mm
Smoky Quartz Faceted Rondelle, Brown, 8-12 mm
Smoky Quartz Faceted Heishi, Brown, 5-6 mm
Related stones
From the blog
All postsDifference between diamond-cut and micro-faceted beads
Diamond-cut beads use a brilliant-style layout with larger, steeper facets for high flash, while micro-faceted beads pack many tiny, shallower facets for a fine shimmer. Facet designs show micro around 65 facets and brilliant styles about 58 to 69. At 2 mm micro you get silky sparkle and smooth feel; at 3 to 4 mm diamond-cut you get punchier flashes and a crisper hand. Use micro for drape, diamond-cut for pop.
Can I wear gemstone bead bracelets in the pool, ocean or hot tub, quartz vs opal, turquoise and lapis?
Pool and hot tub water are a no for opal, turquoise and lapis; quartz bracelets handle short swims. In the ocean, keep any gemstone dip brief. Rinse right away in fresh lukewarm water, swish gently, pat dry and air dry flat before storage. Hot tubs combine heat and chemicals, so remove all gemstone bracelets.
Steam or ultrasonic cleaners for bead strands, what is safe and what settings
Use ultrasonic on quartz family beads like crystal, smoky and amethyst (amethyst is usually safe) and on sapphire, if the strand is sound. Never ultrasonic tanzanite, emerald, Ethiopian Welo opal, turquoise, lapis or ruby. Avoid steam on bead strands altogether. If you must ultrasonic, keep the solution cool, power low, cycles very short, and suspend the strand in a basket.