lapis lazuli
Longman Dictionary of Contemporary English 5++LDOCE 5++lap·is laz·u·li /ˌlæpəs ˈlæzjʊli $ -ˈlæzəli/ noun 
[countable, uncountable]DCJ a valuable bright blue stone, used especially in jewellery 天青石，青金石〔尤用于制作珠宝首饰〕
[countable, uncountable]DCJ a valuable bright blue stone, used especially in jewellery 天青石，青金石〔尤用于制作珠宝首饰〕Examples from the Corpus
lapis lazuli• Outside the light was dazzling, the sky as blue as lapis lazuli.• The staircase and walls are of white marble, with the addition of lapis lazuli for the geometrical floor pattern.• A ripple of lapis lazuli and there was no sign of it.Origin lapis lazuli (1300-1400) Medieval Latin Latin lapis “stone” + Medieval Latin lazuli “of lapis lazuli” (from Arabic lazaward)lap·is laz·u·li nounChineseSyllable
valuable Corpus used blue stone, a bright
lapis lazuli
lap‧is laz‧u‧li /ˌlæpəs ˈlæzjʊli, ˌlæpɪs ˈlæzjʊli $ -ˈlæzəli/
noun
[uncountable and countable] a valuable bright blue stone, used especially in jewellery
lap‧is laz‧u‧li /ˌlæpəs ˈlæzjʊli, ˌlæpɪs ˈlæzjʊli $ -ˈlæzəli/
noun Date: 1300-1400
Language: Medieval Latin
Origin: Latin lapis 'stone' + Medieval Latin lazuli 'of lapis lazuli' (from Arabic lazaward)
Language: Medieval Latin
Origin: Latin lapis 'stone' + Medieval Latin lazuli 'of lapis lazuli' (from Arabic lazaward)
[uncountable and countable] a valuable bright blue stone, used especially in jewellery