October Birthstone
Opal and tourmaline are the October birthstones. Opal may show moving flashes of color; tourmaline offers many individual colors and combinations.
Opal, Tourmaline
Meaning & lore
Opal’s changing appearance inspired stories of lightning and hope. We use it as a symbol of creativity. Those associations are ways to tell a personal story, not physical effects of wearing the stone.
History & origins
Opal’s name is connected with ancient terms for a precious stone. Australia became a major source. Tourmaline’s variety of colors contributed to a history of confusion with other gems before modern identification.
Choosing a personal gift
Choose opal for someone who enjoys subtle surprises as a piece moves in the light. Choose tourmaline when a particular color feels more personal. For an October gift, ask yourself whether the recipient likes a soft, luminous look or a clearer block of color; that answer is more useful than choosing by rarity alone.
Check sizing before choosing a bracelet, necklace or ring.
A note on care
Opal is sensitive to heat and sudden temperature changes. Composite stones may need different care; ask how a piece is constructed. Find everyday habits in our jewelry care guide.
Common questions
What are the October birthstones?
Opal and tourmaline.
Is October only associated with pink?
No. Tourmaline comes in many colors, and opal has a varied palette.
Must an opal show rainbow flashes?
No. Play-of-color is one opal characteristic, not a feature of every opal.
Gemstone facts and historical reference: GIA · October birthstone. Styling suggestions and personal symbolism: LUMERUNE. Meanings are not promised effects. Reviewed September 2026.
Explore another month
Birthstone by Month brings every month together. Prefer one compact view? See the birthstone chart.
Explore the stone’s symbolism
For the history, personal associations and ways to wear this stone, read Tourmaline Meaning.