Hypersthene Oval · Schiller Cabochon

Oval hypersthene cabochons with a schiller effect — a bronze-silver satin luster that seems to emanate from within the stone. Hypersthene is an orthorhombic pyroxene found in basic rocks and also in chondrite meteorites. 4 unique numbered pieces, 32 to 38 mm. Hardness 5-6 Mohs; we recommend a full bezel setting.

Piece Details

This specific piece

Hypersthene's schiller is different from that of labradorite or adularia: it's not a flash of color but a soft, metallic luster, like velvet illuminated from within. The black or dark grey base tone makes the silver-bronze schiller especially visible as the viewing angle changes. Each piece has a slightly different luster distribution depending on how the cleavage planes were oriented during cutting.

The dimensions of these oval pieces (32-38 mm long) are generous for medium to large pendants or statement rings. The contained height (6-7 mm) facilitates low-profile settings that do not compromise the frontal schiller.

How the schiller effect forms

Hypersthene has an orthorhombic cleavage system that produces very smooth and parallel internal surfaces. When light strikes the polished cabochon, some of it penetrates and reflects off these internal cleavage surfaces — creating a diffuse subsurface glow that appears to float beneath the outer face.

For which setting it works

• Full bezel setting (925 silver or other precious metals) — recommended due to 5-6 Mohs hardness; the bezel protects the stone's perimeter from lateral impact; hypersthene's black contrasts especially well with bright silver or oxidized silver
• Pendants with silver settings — the schiller is more visible in pendants where the stone can rotate slightly; in rings, the angle is more fixed
• Wire wrap — suitable technique as an alternative; the wire partially protects the perimeter; we recommend heavier gauge wire for greater lateral protection

Hypersthene in lapidary tradition

Hypersthene was mineralogically identified in the 19th century and owes its name to the Greek hyper (above) and sthenos (strength), referring to its greater density compared to hornblende, with which it was confused.

In crystal tradition, hypersthene is associated with grounding and willpower — the stone that connects with the deep energy of the earth.

The symbolic properties attributed to minerals belong to cultural and historical traditions. They are shared for educational purposes, not as medical advice or a substitute for professional care.

How to recognize genuine hypersthene

Genuine hypersthene schiller is subsurface — it appears to come from beneath the polished face, not from a coating. A black glass imitation may have surface luster but lacks that sense of depth. Under magnification, hypersthene may show subtle cleavage planes or small internal fractures characteristic of a medium-hardness mineral.

Frequently Asked Questions

How do I choose my piece?

Select the variant number. Each number corresponds to an individually photographed piece. The price varies by size.

Why do you recommend a full bezel setting?

The hardness of 5-6 Mohs makes hypersthene more susceptible to scratching than quartz or feldspar. The full bezel protects the cabochon's edge from lateral impacts. For pendants, the risk is lower; the warning is especially relevant for everyday rings.

Does it have any treatment?

Untreated. The schiller is a natural optical phenomenon caused by internal reflection on the mineral's cleavage planes. No detectable treatment from lapidary observation.

See also: all cabochons · silversmithing materials.