Oval Lapis Lazuli Cabochon · 45×26 mm

Oval cabochon of Afghan lapis lazuli, 45 × 26 × 5 mm. Intense ultramarine blue with golden pyrite flecks and white calcite veins.

Piece Details

This specific piece

The ultramarine blue field of this piece is uniform and deep, with no bands or whitish areas that break the saturation. The pyrite inclusions are irregularly but generously distributed — not scattered like dust but concentrated in groups that create metallic contrast against the blue. It's the type of distribution that lapidaries look for when they want a stone with its own visual presence.

How the blue of lapis lazuli is formed

The blue color does not come from a single mineral but from lazurite, a sodium and aluminum sulfosilicate in which sulfur ions (S₃⁻) act as chromophores that absorb light in the red-orange range and reflect ultramarine blue. The rock forms in contact metamorphic zones, where limestone masses are altered by magmatic intrusions at temperatures of 400-600 ºC. The pyrite (FeS₂) and calcite (CaCO₃) that accompany lazurite precipitate in the same hydrothermal fluids. The Sar-e-Sang mine, in the Afghan province of Badakhshan, has been in operation for over 6,000 years and is the source of the highest chromatic quality lapis lazuli known.

What setting it works for

• Closed bezel setting (925 silver or other precious metals) — recommended due to its 5-6 Mohs hardness.
• Statement pendants with silver mounts — the oval format flows well as a pendant; the 45:26 proportion.
• Wire wrap — an alternative for those who work with wire wrapping; protect the edges.

Lapis lazuli in lapidary tradition

Lapis lazuli is one of the most documented minerals for ornamental use in history. The Sar-e-Sang mines supplied the stone to Mesopotamia from at least 3,500 BC — Sumerian cylinder seals and the jewels from the Royal Cemetery of Ur (c. 2,500 BC) bear witness to this. The Egyptians used it in Tutankhamun's pectoral and in royal jewels, associating it with the sky and solar divinity. In the European Renaissance, ground lapis lazuli produced ultramarine pigment, more expensive by weight than gold, reserved for the cloaks of the Virgin Mary in oil painting. In crystal tradition, lapis lazuli is associated with mental clarity, eloquence, and the pursuit of truth — historically, a stone for those who communicate, govern, and create.

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 lapis lazuli

Authentic lapis lazuli always has visible pyrite: golden metallic flecks or veins with their own luster under direct light. The most common materials used to imitate it are blue-dyed howlite (no pyrite, flat and uniform color, waxy surface) and synthetic jaspeite (too uniform color, no inclusions). Sodalite is the closest mineralogical substitute: same blue field, no pyrite, with slight translucence. A practical difference: lapis lazuli is always opaque. The color of secondary veins matters: white or grayish calcite is normal; red or brown veins indicate a different mineral.

Frequently Asked Questions

Is it Afghan lapis lazuli from Sar-e-Sang?

The stated origin is Afghanistan, material acquired in the reference wholesale lapidary market for high-grade lapis lazuli.

What setting do you recommend for this cabochon?

A closed bezel setting in 925 silver, due to its 5-6 Mohs hardness. The edge of the mineral needs metal protection to withstand daily use.

Is it treated or an untreated stone?

No detectable treatment. Statement based on lapidary observation; the piece does not include formal gemological certification.