Sterling Silver Purple Cabochon Margot de Taxco Bracelet

Glass let Margot de Taxco be a colorist on her own terms.
Above all, she was an enamelist. When she opened her own workshop in 1948, her signature became vitreous enamel done at a level Taxco hadn't really produced before: cloisonné and champlevé that were chromatic, layered, and deliberately composed. Her pieces argue with color. The color isn't decoration on top of the design; it is the design.

Glass cabochons were a natural extension of that worldview, for a few reasons.
First, the palette was hers, not the earth's. Natural stones come in the hues they come in, and matched pairs at any given saturation are scarce and pricey. Glass could be specified to exact teals, exact blood reds, exact opaque blacks, and matched across a pair of earrings or a full parure with no compromise. In the same spirit as Mondrian. That of a designer working in series and in saturated color, that level of control was non-negotiable.

Second, glass and enamel speak the same visual language. Both are vitreous, glossy, smooth, color-pure in a way that turquoise or opal or amethyst simply aren't. A glass cabochon set next to a panel of cloisonné reads as tonal continuity, one material vocabulary. A natural stone would have stuck out as a different conversation.

Third, there's the modernist position underneath all of it. In the Spratling-era Taxco worldview, value lived in design and silversmithing, not material rarity. Margot extended that further by quietly telling the buyer that what she made was the point, not what the earth coughed up. It also kept her suites reproducible and her price points stable, which mattered because she worked in matched sets.

So glass wasn't a substitute for "real" gemstones. It was the intentional material for an artist and her remarkable point of view.