zaffre

Zaffre, a pre-scientific substance (see List of alchemical substances), is a deep blue pigment obtained by roasting cobalt ore, and is made of either an impure form of cobalt oxideClayArt or impure cobalt arseniate. During the Victorian Era, zaffre was used to prepare smalt and stain glass blue.

1. The artist mixed zaffre with white to create a pale blue hue for the sky.
   艺术家将钴蓝与白色混合，创造出一抹淡蓝色的天空。
2. Zaffre is one of the oldest pigments known to mankind, originally obtained from cobalt ores.
   钴蓝是人类已知的最古老的颜料之一，最初是通过钴矿石提炼得到的。
3. The ceramic pieces were decorated with a deep shade of zaffre, giving them an elegant and timeless look.
   这些陶瓷作品用深蓝色的钴蓝装饰，赋予了它们一种优雅且永恒的外观。
4. Zaffre was historically used to color glass and ceramics, particularly in the Middle Ages.
   钴蓝在历史上曾用于给玻璃和陶瓷上色，尤其是在中世纪时期。