Two cabochons hand-carved from rough Namibian material: deep turquoise blue shattuckite inlaid with emerald dioptase. Each green speck on the surface is a dioptase microcrystal that catches the light separately, creating a constellation of sparkles over the blue field. No.1 (13 mm, freeform oval) and No.2 (10 mm, teardrop shape). Both stabilized with resin to consolidate the material's structure.
Item details
| Mineral |
Shattuckite with Dioptase (copper silicates) |
| Dimensions |
No.1: ~13 mm · No.2: ~10 mm (±0.5 mm due to hand-carving) |
| Shape and back |
No.1 freeform oval · No.2 teardrop shape · flat back |
| Finish |
Mirror polish |
| Hardness |
3.5 Mohs — we recommend closed bezel setting |
| Origin |
Namibia (rough material acquired directly) |
| Treatment |
Stabilized (epoxy resin impregnation) |
| Item type |
Available in 2 formats (No.1 · No.2) |
These particular pieces
The dioptase in these cabochons does not form a continuous vein but a mosaic of crystalline micro-fragments dispersed in the shattuckite matrix. In No.1, the dioptase field covers a good part of the surface and coexists with areas of ocher-red host rock; in No.2 the distribution is more concentrated in the body of the teardrop. Stabilization with resin consolidates the more porous areas without altering the color or pattern — a standard treatment for shattuckite (3.5 Mohs) which, without consolidation, tends to chip during polishing.
How the shattuckite-dioptase combination forms
Both are copper silicates that precipitate in oxidation zones of copper deposits. The color difference — blue in shattuckite, green in dioptase — responds to variations in crystal structure and the ligands of Cu²⁺. In the Namibian deposits of the Otavi-Bergland strip, they grow in intimate contact, producing some of the most prized lapidary materials for both species.
What mounting works for
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Closed bezel setting (silver 925 or gold) — necessary given the low Mohs: the bezel protects the edge of the cabochon from impacts and seals the metal-mineral interface.
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Pendant with high setting — the small scale favors settings that elevate the stone and maximize the visibility of the dioptase pattern.
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Wire wrap — suitable for those working with wire; use fine gauge and avoid direct pressure on the edges.
Shattuckite in lapidary tradition
Shattuckite was described in 1915 at the Shattuck Mine in Bisbee, Arizona. The Namibian deposits of the Otavi-Bergland strip made it a reference lapidary material starting in the 90s. Dioptase, in turn, arrived in Europe in the 18th century from Kazakhstan and its green color deceived gemologists who mistook it for emerald. In crystal tradition, shattuckite and dioptase are associated respectively with clarity of thought and emotional openness.
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 Shattuckite
Authentic shattuckite shows a microfibrous texture under magnification: the blue is not flat but structured in oriented microcrystals. Genuine dioptase has a vitreous luster and a green that appears backlit. Resin or glass imitations present homogeneous colors without that characteristic fibrous texture.
Frequently Asked Questions
Does resin stabilization affect lapidary value?
No, as long as it is declared. It is a standard lapidary process for low hardness minerals. The color is not artificial: blue and green are the natural colors of shattuckite and dioptase respectively.
What is the difference between No.1 and No.2?
No.1 (13 mm, freeform oval) has a greater presence of dioptase and visible host rock areas; No.2 (10 mm, teardrop) is more compact. Same rough material from Namibia, identical treatment.
How to care for a stabilized cabochon?
Avoid organic solvents (acetone, alcohol) that degrade the resin. Clean with a soft damp cloth. No ultrasonics. See jewelry care.
See also: lapidary collection · other stone cabochons.
