Japanese by Example
Learning through examples in manga

Craftman's efforts making glassware with 職人

ARIA The MASTERPIECE » Volume 4 » Page 226

Akari picks up a box containing glassware items for her to transport. One of the employees from the shop making the glassware takes the box from her to place in her gondola. After he does this a second time, Akari says she can help carry the boxes, but he refuses.

職人(しょくにん):
「このガラス(たち)親方(マエストロ)精魂(せいこん)()めて作った」
"These pieces of glass were made with the maestro's heart and soul poured into them."
僕達(ぼくたち)職人(しょくにん)努力(どりょく)結晶(けっしょう)なんス」
"They're the crystallization of our craftsmen's efforts."

結晶(けっしょう) can refer to crystallization, but also to the fruits (of one’s labor). He means the latter here, but the former works well in an English translation without losing the meaning.