These cobalt blue slices carry a celestial mix. Most show one of two motifs: a solid opaque white crescent moon, or a white disc with a blue pinwheel swirl spinning through it, and the occasional larger slice fits both motifs together on one face. The white reads crisply against the deep cobalt surround, and the rotating swirl adds a sense of movement wherever it lands. A few pieces in any scoop sit edge on, showing the solid blue side of the cane.
Murrini, also called millefiori, are small cross-section slices of patterned glass cane. Place individual slices face up on the surface of your fused glass project before firing and they fuse in as decorative accents. They work well on jewelry, pendants, small plates, dishes, suncatchers, and ornaments, especially night sky and celestial themes.
What pattern do these murrini show? The jar is a mix: some slices show a white crescent moon on a cobalt blue ground, others show a blue pinwheel swirl set in a white disc, and larger slices can carry both motifs together. The opaque white contrasts sharply with the surrounding blue, keeping the shapes legible even at smaller slice sizes.
What COE glass must I use with these murrini? These are COE90 murrini. Combine them only with glass of the same COE. Mixing glass with a different coefficient of expansion introduces internal stress that can cause cracking as the piece cools.
How many slices come in a jar? Sold as a jar of assorted slices; slice sizes, counts, and the ratio of moon to swirl motifs vary from jar to jar.
How do I use murrini in a fused glass project? Arrange slices face up on the surface of your unfired glass piece before loading the kiln. They function as surface accents, not as a structural base layer. A full fuse melts them flat and integrates them smoothly into the surrounding glass, while a tack fuse keeps them slightly raised and preserves more of their three-dimensional profile and pattern detail.
Specifications
SKU: 153044
COE: COE90
Sold as: jar of assorted slices (sizes, counts, and motif mix vary)
Pattern: white crescent moon and blue pinwheel swirl motifs on cobalt blue; most slices carry one motif, larger slices can show both
Working Notes
A full fuse brings the murrini down flat so they sit level with the glass surface, blending the edges into the surrounding field for a smooth, polished result. A tack fuse stops the heating cycle before the slices fully collapse, leaving them raised with more visible surface texture and keeping the crescent and swirl outlines sharper. Neither approach is universally better; the right choice depends on the finished look you want.
Because results vary with kiln model, glass thickness, and the rest of your firing schedule, always test on a small sample before committing to a full project. Adjust your ramp rates and hold times to suit your COE90 base glass and your target outcome.
Description updated: July 6, 2026
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