Historical clue formulations

• Diamond, e.g. — 2026-09-13
• Brilliant example — 2026-07-18
• Pearl or peridot — 2026-06-01
• Something a lapidary cuts — 2026-05-07
• Opal or ruby — 2026-03-09
• Precious stone — 2026-02-09
• Jewel — 2026-01-19
• Sparkler on a ring — 2025-11-11
• Precious stone — 2024-05-20
• Set piece? — 2024-01-05
• Exemplary individual — 2023-12-01
• Citrine, for one — 2023-11-02
• ___ State (Idaho nickname) — 2023-10-03
• It's set in a ring — 2023-01-12
• Jewel — 2022-12-26
• Garnet, e.g. — 2022-11-22
• Real beauty — 2022-09-07
• Beauty — 2022-06-20
• Little treasure — 2022-06-01
• Peridot, for one — 2022-05-15
• Paragon — 2022-05-06
• There's an official one for every month — 2021-11-02
• *Ring centerpiece — 2021-06-02
• "Columbia, the ___ of the Ocean" — 2020-12-01
• Standout — 2020-11-05
• Opal or onyx — 2020-11-03
• Thing of beauty — 2020-07-27
• Beauty — 2020-06-09
• "Columbia, the ___ of the Ocean" — 2020-02-17
• One of 17-, 18-, 37-, 60- or 62-Across — 2020-01-06
• Sign of spring — 2019-08-22
• Paragon — 2018-10-27
• Jewel — 2018-10-08
• Masterpiece — 2018-06-01
• Beaut — 2018-04-22
• Glam rock? — 2017-10-04
• Beauty — 2017-08-06
• Real beauty — 2017-07-04
• See 58-Down — 2017-06-13
• Aquamarine or amethyst — 2017-06-07
• Stone — 2017-05-12
• Ring decoration — 2017-04-04
• Beaut — 2016-12-23
• Little treasure — 2016-10-14
• The Pink Panther, in "The Pink Panther" — 2016-06-26
• Beauty — 2016-01-31
• Masterpiece — 2016-01-12
• 32-Across offering — 2015-03-28
• Beauty — 2014-12-21
• Beauty — 2014-10-19