結晶

彼（かれ）の妻（つま）は二人（ふたり）の愛の結晶（あいのけっしょう）を残（のこ）して死（し）んだ。

His wife died leaving behind their two beloved children.

あのかわいい赤（あか）ちゃんは彼（かれ）らの愛の結晶（あいのけっしょう）です。

That cute baby is the fruit of their love.