#673 Tuesday, March 31
I'm a reddish-brown opaque gemstone used since ancient times. What am I?
The daily Ryddle for Friday, March 6, 2026
I'm a very strong two-part adhesive. Mix me and I harden like rock. What am I?
Think you know it? Play it to make your guesses, or reveal the hint and answer below.
I bond almost anything.
The answer is epoxy.