Journal

133 Articles
September Birthstone: Sapphire, Beyond Blue
birthstone / July 23, 2026

September Birthstone: Sapphire, Beyond Blue

Short answer: September's birthstone is sapphire — and sapphire is not a blue stone. It is the mineral corundum, and it comes in every color except red, because...

February Birthstone: Amethyst
birthstone / July 22, 2026

February Birthstone: Amethyst

Short answer: February’s birthstone is amethyst — the purple variety of quartz, which the U.S. Geological Survey places at 7 on the Mohs hardness scale. That one number...

October Birthstone: Opal vs Tourmaline
birthstone / July 21, 2026

October Birthstone: Opal vs Tourmaline

Short answer: October has two birthstones, opal and tourmaline, and the honest difference between them is durability. Opal is soft and sensitive to water and heat, so a...

August Birthstone: Peridot, Spinel and Sardonyx
birthstone / July 20, 2026

August Birthstone: Peridot, Spinel and Sardonyx

Short answer: August has three birthstones — peridot, the main modern stone, plus spinel and sardonyx. Peridot is the yellow-green gem most people mean, sardonyx is the older...