Madagascar porcelain jasper disc, 32 mm diameter, 5 mm profile. Pure white without inclusions, ultra-thin format. Stock acquired from a wholesale lapidary market.
Piece Details
| Mineral |
Porcelain Jasper (high-purity microcrystalline SiO₂) |
| Dimensions |
32 mm diameter × 5 mm profile (±0.5 mm) |
| Shape and Back |
Round, flat back |
| Finish |
Mirror polish |
| Hardness |
6.5–7 Mohs — suitable for earrings and pendants; we recommend a closed bezel setting |
| Origin |
Madagascar |
| Treatment |
Untreated |
| Type of Piece |
Unique piece |
This specific piece
The 5 mm profile on a 32 mm diameter produces a diameter/height ratio of 6.4:1 — what is called a disc or "thin cab" in the trade. This proportion has two practical consequences: the final weight of the jewelry is significantly less than with a standard profile cabochon, and the necessary bezel is lower and more precise, simplifying its construction.
At 32 mm in diameter, this white disc is large enough to be the central element of statement earrings or a minimalist pendant. The white of the porcelain jasper acts as a surface that amplifies the shine of the surrounding metal.
What setting it works for
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Disc earrings (925 silver) — the 32 mm round format with a low profile is the classic candidate for "ear disc" type earrings; the thin bezel and low weight make it comfortable for prolonged wear.
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Geometric pendant — a 32 mm white circle as a central pendant is a visually clean object in any design collection.
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Circular outline wire wrap — the regular perimeter of the circle facilitates symmetrical wrapping with 22-20 AWG wire.
Jasper in lapidary tradition
Jasper has accompanied humanity since the Paleolithic: jasper tools have been found in sites dating back 300,000 years. As a jewelry stone, it appears in the pectorals of Ancient Egypt and in the inscriptions of the Lapidario de Alfonso X el Sabio (13th century). White porcelain jasper was recognized as a valuable lapidary material by 20th-century European goldsmiths for its visual purity, difficult to find in other jaspers. In crystal tradition, white jasper is associated with transparency and clean intention.
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 porcelain jasper
Porcelain jasper has a slightly matte texture under magnification — microcrystalline quartz does not produce the perfect shine of glass. The 6.5-7 Mohs hardness distinguishes porcelain jasper from howlite (3.5 Mohs) and calcite. Unlike white marble (calcite + dolomite), jasper does not react with hydrochloric acid. White Madagascar jasper is purer and more uniform than that from other locations.
Frequently Asked Questions
Is it natural Madagascar porcelain jasper?
Yes. No detectable treatment. The white color is the natural composition of the mineral. Statement based on lapidary observation; the piece does not include formal gemological certification.
Why such a low profile?
The 5 mm profile on a 32 mm diameter produces a low-weight disc, ideal for prolonged wear earrings. A larger profile would increase the weight and complicate the bezel.
Are the dimensions exact?
Nominal 32 mm diameter × 5 mm profile, tolerance ±0.5 mm. As it is uncalibrated industrial lapidary stock, dimensions may vary slightly.
How is it used as an earring?
The most common form is a low-walled silver bezel (2-3 mm) with a soldered eyelet at the top. It can also be secured with prong settings at the four cardinal points of the perimeter.
How to care for it?
Resistant to water and household agents. Clean with warm water and neutral soap. More information at jewelry care.
See also: cabochon collection · handmade earrings.
