October Birthstones

October's two birthstones are a study in contrast: opal with its shifting play-of-color, and tourmaline, which comes in a wider color range than almost any other gem. Together they make October one of the most colorful months on the calendar.

  • Opal — Modern & Traditional · iridescent play-of-color on a milky or dark body
  • Tourmaline — Modern · the full spectrum, from neon Paraíba to rubellite and indicolite

Modern = today's official list; Traditional = the older historical stone.

Every loose stone we offer is hand-selected and quality-vetted, sourced direct and ready to set — and if you don't see exactly what you're looking for, we can source the right stone for you. Contact us with any sourcing request.

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