a piece of fine-grained dark schist or jasper formerly used for testing alloys of gold by observing the colour of the mark which they made on it
Today’s NYT Connections Answers Jan 2, #571 - Daily Updates & Hints
Today’s Wordle Answer Jan 2 #1293- NYT Wordle Hints & Updates
NYT Mini Crossword Answers Today - The Mini for Jan 2 Solved
NYT Strands Today - Hints, Spangram & Answers for January 2