Mineraldle
Puzzle #33 was topaz.
Topaz is a silicate mineral made of aluminum and fluorine with the chemical formula Al2SiO4(F, OH)2. It is used as a gemstone in jewelry and other adornments. Common topaz in its natural state is colorless, though trace element impurities can make it pale blue or golden-brown to yellow-orange.
Read about it on Wikipedia →
What the record says
Puzzle 33 ran on 17 Aug 2026 and the answer was topaz, played with 6 guesses against 4 columns. On the record: Crystal system - orthorhombic; Strunz group - silicates; Elements - Al, F, O, Si; Named after - place.
Beyond the grid the record adds Formula - Alâ‚‚SiOâ‚„Fâ‚‚; Mohs hardness - 8; Named after - St. John's Island, Egypt.
Mineraldle builds its record from Wikidata - CC0 1.0. The description above comes from the same place the game credits on every reveal: English Wikipedia verbatim extract, CC BY-SA 4.0. The puzzle itself is still playable in the archive, and every answer that has been and gone is listed on the past-answers page.
How it scored
- Crystal system
- orthorhombic
- Strunz group
- silicates
- Elements
- Al, F, O, Si
- Named after
- place
Also on the record
- Formula
- Alâ‚‚SiOâ‚„Fâ‚‚
- Mohs hardness
- 8
- Named after
- St. John's Island, Egypt