Historical clue formulations

• November birthstone — 2026-08-27
• Birthstone after opal — 2026-01-11
• November birthstone — 2024-05-21
• November birthstone — 2023-11-19
• Dark yellow shade — 2021-11-21
• November birthstone — 2021-10-25
• Official gemstone of Utah and Texas — 2021-04-16
• Birthstone for some Scorpios — 2019-06-18
• 8 on the Mohs hardness scale — 2019-01-19
• 1967 Cold War suspense novel by 9-Down — 2017-01-20
• One of Utah's state symbols — 2015-02-28
• Relative of ocher — 2014-05-10
• Birthstone that was the name of a Hitchcock film — 2012-07-09
• Birthstone for most Scorpios — 2012-05-09
• Birthstone for many Scorpios — 2010-12-15
• Birthstone for most Scorpios — 2009-02-24
• Traditional symbol of friendship — 2008-10-26
• November birthstone — 2008-08-18
• Old Mercury — 2006-07-07
• November birthstone — 2006-01-17
• November stone — 2004-06-23
• Shade of yellow — 2004-03-03
• November birthstone — 2003-12-03
• Kind of quartz — 2003-08-30
• Stone in a ring — 2002-11-25
• November birthstone — 2001-08-28
• Dark orange-yellow — 2001-06-15
• Translucent quartz — 2000-09-03
• Uris novel — 1997-04-19
• 1969 Hitchcock film — 1995-03-01
• 1967 Uris novel — 1994-01-29