Surah Al-Insan 76:16

قَوَارِيرَا۟ مِن فِضَّةٍ قَدَّرُوهَا تَقْدِيرًا

Clear glasses [made] from silver of which they have determined the measure.

Translation: Saheeh International

Tafsir

crystal of silver that is they are made of silver which is transparent like crystal — which they that is the ones passing around them in service have measured in a precise measure according to the measure required by the one drinking it neither more nor less which makes for a most delightful drink.

Excerpt from Tafsir al-Jalalayn, commentary on 76:16, via Quran.com. The reader has the full commentary and 9 more tafsirs.