Ruby in Fuchsite · Oval nr.1

Oval ruby in fuchsite cabochons in sizes from 28 to 39 mm. Red corundum (ruby) crystals on a fuchsite matrix — chrome green mica from Karnataka, India. Five individual variants. Selected from a wholesale lapidary market.

Piece Details

This Specific Piece

This lot nr.1 brings together the largest formats in the series: ovals between 28.7 mm and 39 mm on the major axis, with a thickness of ~6.7 to 7 mm. At this scale, the red-green contrast of ruby in fuchsite powerfully stands out as a focal point for any design. The red corundum crystals in these specimens are between 3 and 10 mm in diameter, clearly visible from a distance. Each variant (numbered 1–5) has its own distribution of rubies on the fuchsite.

How Ruby in Fuchsite is Formed

Ruby in fuchsite is a Precambrian metamorphic rock from Karnataka (India), formed approximately 2.5 billion years ago under conditions of high pressure and temperature. Chromium present in the hydrothermal fluids of the area simultaneously stains two minerals in formation: corundum turns red (ruby, Al₂O₃ + Cr³⁺) and muscovite turns green (fuchsite, K[Al,Cr]₂[AlSi₃]O₁₀[OH]₂). Ruby crystals form hexagonal tablets or short prisms before mica envelops them during its secondary crystallization. The result is a material with an unrepeatable chromatic contrast where the same element—chromium—simultaneously generates red and green.

For What Mounting It Works

• Pendant in 925 silver bezel — in 28–39 mm sizes, these ovals are ideal for.
• Large statement rings — the short axis of ~25–28 mm is the limit for.
• Wire wrap — an alternative for those working with wire; in pieces of this.

Ruby in Lapidary Tradition

In historical gemology, ruby (red corundum from chromium, Al₂O₃ + Cr³⁺) is the most expensive gem per carat in high-quality specimens, surpassing diamond. The deposits of Karnataka have been exploited since ancient times; the Periplus Maris Erythraei (1st century AD) mentions India as a source of rubies in Mediterranean trade. Fuchsite (green mica) is named after the mineralogist Johann Nepomuk von Fuchs (1774–1856), who first described the chromiferous variety of muscovite. The combination of ruby in fuchsite as a specific lapidary material is a 20th-century development in the workshops of Karnataka.

In crystal tradition, ruby and fuchsite together are associated with the balance between strength (ruby) and compassion (fuchsite), and with the opening of the heart chakra.

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 Ruby in Fuchsite

Genuine ruby in fuchsite combines two very distinct textures: corundum crystals (intense vitreous luster, very hard) and mica (silky pearly luster, very soft). Under magnification, fuchsite exhibits cleavage in parallel sheets, characteristic of all micas. Corundum crystals are brighter than the surrounding mica and may show conchoidal fractures. If the entire surface has the same hardness and uniform luster, it is likely dyed glass or plastic. The scratch test with steel (5.5 Mohs) scratches fuchsite but not the ruby crystals.

Frequently Asked Questions

Which variant do I receive? Can I choose?

Yes. The variants are numbered (1–5) with their specific dimensions: variant 1 (34×27×6.7 mm), variant 2 (37×28×6.7 mm), variant 3 (39×28×6.9 mm), variant 4 (34×28×6.75 mm), variant 5 (28.7×25×7 mm).

Are rubies facet-grade gems?

The ruby crystals in these pieces are genuine red corundum but of lapidary quality — opaque or semi-opaque, without the transparency for fine faceting.

Is it treated?

Untreated. The red of the ruby and the green of the fuchsite are results of chromium in each mineral structure. No detectable treatment.