Freeform smoky quartz cabochon with iron oxide inclusions, 25 × 14 × 8 mm. The translucent smoky base and the red-orange specks of oxidized iron create an abstract mineral landscape: layers of earthy tones that shift with the angle of light. The back retains a natural cavity from the original fragment. Hand-carved in our lapidary workshop.
Item Details
| Mineral |
Smoky Lodolite (smoky quartz with clay and iron hydroxide inclusions) |
| Dimensions |
25 × 14 × 8 mm |
| Shape and Back |
Organic freeform; back with natural cavity |
| Finish |
Mirror polish |
| Hardness |
7 Mohs — we recommend a closed bezel setting; consider the irregular back in the design |
| Origin |
Brazil |
| Treatment |
Untreated |
| Item Type |
Unique piece |
About this specific piece
The distribution of iron inclusions creates a tonal map ranging from brick-red in areas of higher concentration to golden ochre in transitional zones, set against a medium-transparency smoky quartz base. Under natural light, the surface appears to contain layers at different depths: the inclusion planes are not uniform but rise and fall within the crystal.
The lapidary decision was to respect the freeform of the fragment rather than cutting it into a symmetrical oval. The resulting shape takes advantage of the best area for iron inclusion distribution. Key technical data for the goldsmith: the back has a natural cavity which is not a cutting defect. A bezel wall sufficient to surround the entire perimeter is the usual approach; the goldsmith decides whether to integrate or fill the back cavity.
How Lodolite is formed
Lodolite —also called "garden quartz" or "fantasy quartz"— is quartz with inclusions of secondary minerals: clays, chlorites, iron hydroxides. The inclusions were deposited before or during the crystal growth, becoming trapped as the quartz developed. The red-orange color of the iron inclusions in this piece comes from minerals such as goethite or limonite, formed by the oxidation of iron-rich compounds in the presence of water over long geological periods. Smoky quartz owes its coloration to natural color centers generated by irradiation from radioactive materials in the surrounding deposit.
What kind of mounting it works for
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High-walled bezel setting (sterling silver) — The 8mm profile and the back with a cavity require a higher bezel than standard. Ideal for brooches or pendants where the thickness of the piece is integrated into the mounting design.
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Statement artisan pendants — The freeform and 25mm length provide enough presence for a centerpiece. In oxidized silver, the reddish tones of the inclusions and the darkened metal complement each other naturally.
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Organic wire wrap — The freeform fits wrap styles that embrace the piece. Copper wire in 18-20 gauge is a consistent choice with the warm tones of the iron inclusions.
Lodolite in lapidary tradition
Lodolite has been appreciated by collectors and artisans for decades for its ability to "freeze" fragments of geological landscape within a transparent crystal. In Brazil, where some of the best specimens are extracted, lapidaries also call it "fantasy quartz" or "garden quartz." The term "lodolite" comes from the Latin lodus (mud or silt), referring to the clay inclusions that are frequent in these pieces.
In crystal tradition, lodolite with iron inclusions is associated with the strength of what has survived time: the red of oxidized iron as a mark of the processes that shape rock over millions of years. A stone for those who value character over visual uniformity.
The symbolic properties attributed to minerals belong to cultural and historical traditions. They are shared for educational purposes, not as medical advice.
How to recognize genuine lodolite
Authentic lodolite has three-dimensional inclusions: under magnification, the inclusion planes are at different depths within the crystal, not in a surface layer. The iron spots do not have perfectly defined edges and are not identical to each other. A surface-dyed imitation shows uniform coloration on the surface with no variation in visual depth; dyed fractures show concentrated coloration in the cracks.
Frequently Asked Questions
Is the back with a cavity a problem for mounting?
It is a technical detail that the goldsmith should be aware of, not a defect. The cavity is a characteristic of the original fragment. With a bezel wall sufficient to surround the entire perimeter, mounting works normally. The goldsmith decides whether to fill or leave the back open depending on the design of the piece.
Is the material treated?
No detectable treatment. The smoky color of the quartz and the iron inclusions are natural. Statement based on lapidary observation; no formal gemological certification.
What differentiates lodolite from surface-dyed quartz?
Lodolite has solid three-dimensional inclusions within the glassy matrix. Dyed quartz has no internal color depth: the pigmentation is on the surface or in fractures. Under magnification, the difference is immediate.
Are the dimensions exact?
25 × 14 × 8 mm, with a tolerance of ±0.5 mm on any axis. The freeform implies that the perimeter does not follow a regular geometric curve; the measurements correspond to the enclosing rectangle of the piece.
What type of jewelry piece is it best suited for?
The 8mm thickness and freeform lean towards statement pieces: large pendants, brooches, or long finger rings with an elaborate setting. It is not a cabochon for everyday rings without protection.
How is it cared for?
Clean with a dry or slightly damp cloth. Avoid prolonged water and chemicals. Store in an individual case. More information in our jewelry care guide.
More unique cabochons: lapidary collection. See also: all cabochons.
