Stichtite

Stichtite is a purple magnesium chromium carbonate hydroxide mineral in the hydrotalcite supergroup. Most of the time, it shows up as lilac-to-grape-purple patches smeared through green serpentine, and that exact purple-on-green combo is what a lot of dealers slap the name “atlantisite” on.

A polished slice lacks the cold, glassy feel of quartz. It has the slightly waxy, almost soapy surface typical of serpentine, and the purple appears as paint-like daubs or foggy clouds rather than crisp crystal faces. Some tumbled pieces have vivid purple but dull-looking green. The best material shows clean, apple-green serpentine with tight, saturated purple patches that seem to sit just under the polish.

People mix it up with lepidolite, and sometimes even sugilite, at first glance. But stichtite usually gives itself away in the texture. The purple isn’t sparkly-mica. It’s also not that hard, candy-like purple you see in sugilite cabochons. It just looks softer. More chalky-lilac in rough. And it often sits in seams and pods instead of forming obvious crystals.

Tasmania’s the classic origin story here. Stichtite was first described in 1910 out of the Dundas district on Tasmania’s west coast, and it was named after Robert Carl Sticht, a mining manager and metallurgist linked to the Mount Lyell operations.

Older mineral collections show how its popularity spread. Collectors valued the color, and lapidaries favored how the purple contrasts with serpentine, an effect that improves once the stone is cut and polished to a slick finish. The trade name "atlantisite" persisted because it is more marketable than "stichtite-bearing serpentinite." The mineral name stichtite, however, is well established in the scientific literature and is not merely a marketing label.

Most display and lapidary material comes from Tasmania and South Africa, usually as purple stichtite in green serpentine. Smaller occurrences are reported in a handful of ultramafic and serpentinite settings worldwide.

Stichtite occurs in a consistent geological setting: serpentinite and altered ultramafic rocks with chromium present in the system. It forms as a secondary mineral during alteration, when magnesium-rich rocks are hydrated and carbonated and enough chromium is available to color the structure.

The purple material usually occurs in veins, seams or lumpy, irregular pods within serpentine. It commonly accompanies other minerals typical of serpentinite, including magnetite grains (small black specks that cling to a magnet), chromite remnants and, in some cases, nearby carbonate.

Well-formed crystals should not be expected. Stichtite most often occurs as fine-grained to massive material. In a hand sample it appears as a smeared or waxy colored mass rather than a distinct crystal habit.

Color: Lilac, mauve, pinkish purple to deeper grape-purple, often mottled or patchy, frequently set in green serpentine. The purple can look pastel in rough but pops after a good polish.

Luster: Waxy to dull in massive material, sometimes slightly pearly on fresh surfaces.

If you scratch it with a copper coin, it’ll usually mark pretty easily because it’s soft. Compare it side-by-side with lepidolite: lepidolite has that flaky sparkle and splits into micaceous sheets, while stichtite looks more like a smooth, waxy smear. And if you’ve got “atlantisite,” run your fingertip over it: real serpentine plus stichtite often feels slick and cool, not glassy, and the purple tends to be patchy rather than perfectly uniform.

Stichtite is sometimes confused with these materials:

• Atlantisite (trade name for stichtite-in-serpentine, but a lot of sellers use it loosely for any purple-in-green serpentine)
• Purple serpentine or serpentine with magnetite spots (often sold as "atlantisite" even when the purple isn’t stichtite)
• Purpurite (solid purple masses that can photo-match, but it’s harder and feels drier, not waxy/soapy)
• Charoite (swirly lavender with black and white streaking; higher polish and a colder, denser feel than serpentine-host stichtite)
• Dyed magnesite or dyed howlite (fake purple cab material; dye loves cracks and drill holes and leaves dark rims)
• Purple glass or resin cabochons (too uniform, too glossy, and they feel warmer in the hand than a serpentine slice)

Normal handling carries low risk. When cutting or sanding stichtite, avoid raising dust, since the fine, chalky particles spread easily. Wash hands afterward, especially if the surface was rough.

Use wet cutting, keep the area ventilated, and wear a proper respirator if you’re shaping or polishing it. Don’t sweep the dust up dry. Wipe up the slurry instead (it’s that gritty, gray paste that gets everywhere, including the edge of the bench).

Rough/Tumbled: $5 - $60 per piece

Cut/Polished: $8 - $35 per carat

Price depends mainly on the strength of the color contrast and how cleanly the stone takes a polish, which is noticeable on the wheel when the surface begins to glaze. Solid purple stichtite is less common than the purple-in-green mix. Larger, crack-free cabochon material costs more.

Fragile — Scratch resistance: Poor, Toughness: Fair

It’s soft and can bruise or scratch easily, so it holds up better as a display stone than as a daily-wear ring stone.

Use & Storage

Store stichtite in a soft pouch or divided box so harder stones cannot scratch it. Tumbled pieces should not be kept in mixed bowls, because quartz will scuff them quickly.

Cleaning

1) Rinse quickly with lukewarm water. 2) Use a drop of mild soap and your fingers or a very soft cloth, then rinse again. 3) Pat dry and let it air dry fully before storing.

Cleanse & Charge

If you do energy-style cleansing, gentle methods are the move: smoke, sound, or a quick pass on a selenite plate. Skip salt scrubs because the grit can leave a haze of tiny scratches.

Placement

A shelf spot out of direct sun works well, especially where you can see the purple-green contrast from a few feet away. If it’s a polished palm stone, a desk is fine, just keep it away from keys and coins.

Caution

Don’t use ultrasonic or steam cleaners. This material’s soft, and if there are any hairline fractures (the tiny ones you might not even notice), those cleaners can leave dull patches or even chip an edge. Handle it gently. And skip anything abrasive, including gritty cleaners that feel like fine sand between your fingers.

Stichtite is not tied to ancient lore, since it was first described in 1910 from the Dundas district of Tasmania and named for Robert Carl Sticht, a mining manager. Its main cultural role is in modern crystal traditions, where it is linked with compassion, emotional softening and releasing old resentment. Practitioners associate it with the Heart and Third Eye chakras and with Taurus and Libra, and often use it as a calm focus object during journaling or meditation. These are beliefs, not proven effects, and they do not replace medical care.

In practical terms, stichtite is valued by collectors and lapidaries for the contrast of purple against green serpentine. Because it is very soft, it suits display pieces, pendants worn occasionally and tumbled stones better than daily-wear rings. Polished surfaces dull and scratch where they are handled most. Storing pieces in a soft pouch, away from harder stones such as quartz, keeps the polish intact.