Oaxaca Barro Negro

Barro negro is the burnished black pottery of San Bartolo Coyotepec, Oaxaca, where iron-rich clay is polished with quartz before firing and then smothered in a low-oxygen kiln until it turns deep metallic black. The result is a black-on-black artifact: glossy graphite surfaces, matte-black shadow, and a faint silvery-pewter burnish along every edge.

This design system honors that artifact. It is definitively dark, never cream, with no chromatic primary — only the contrast of gloss against matte and the one light that exists in the object: a silvery sheen catching the curve.

黑陶（barro negro）是墨西哥瓦哈卡州圣巴托洛科约特佩克的抛光黑陶器。富含铁质的黏土在烧制前用石英反复磨光，再置于缺氧的窑炉中闷烧，最终呈现深邃的金属黑。成品是一件「黑上之黑」的器物：光亮的石墨表面、哑光的黑色阴影，以及沿着每道边缘浮现的银灰锡光。

本设计系统忠于这件器物——它彻底是暗色的，绝不奶白，没有任何彩色主色；唯一的色彩来自光泽与哑光之间的对比，以及器物本身仅有的那一缕光：曲面上掠过的银色微光。