Topaz: The November Birthstone Identified in Crossword Puzzles by Birthstones GURU Team opal tie October 4, 2025
Peridot, Carnelian, and Sardonyx: August’s Trio of Birthstones by Birthstones GURU Team October 3, 2025
October’s Gemstones: Opal and Tourmaline – A History of Iridescence and Variety by Birthstones GURU Team September 30, 2025