lazuli

Rembrandt didn't go to the local art shop and buy tubes of paint. He had to grind and mix his paints from things such as lapis lazuli to make blue.

伦勃朗没法在美术商店买到一管管的颜料，他只能自己研磨做颜料，比如把天青石磨成粉来当蓝色颜料用。

The carpet and antique sellers will gladly sit you on the floor and unpack small purses filled with precious stones from central Asia and huge lapis lazuli from Afghanistan.

地毯和古董商人会很高兴的让你坐在地板上，打开装满宝贵石头的小包裹给你看，里面的宝石来自中亚而巨大的青金石来自阿富汗。