The birthstone edit · October
October has two birthstones: opal and tourmaline. Choose opal for shifting rainbow color, or tourmaline for a beautiful range of hues and greater scratch resistance. Pink tourmaline is a lovely starting point, but green and watermelon tourmaline belong in the October story, too.
This guide brings together their colors, meanings, hardness, common origins and care, with jewelry ideas to help you choose an October birthday gift.
Gemstone portraits and the header image are AI-created illustrations of gem varieties. Jewelry photographs show Nina Wynn designs. Colors and patterns vary from stone to stone.
Find your opal jewelry
Compare opal across the jewelry styles below, then check the selected product for its exact material, dimensions and current options.
October’s rainbow gem
Opal: color that moves with you
Precious opal reveals flashes of color as the stone and light move. This effect, called play-of-color, gives each gem its own character. Opal can look soft and luminous or vivid and dramatic.
Choose opal if you love an individual pattern and an almost painterly glow, and are happy to give a softer gem gentle care.
Lilly Doublet Opal Necklace
14k yellow gold · Opal doublet
Ask about Lilly Doublet Opal 14k Yellow Gold Necklace →Opal meaning and its “stone of lightning” story
Opal has long been associated with hope, purity and truth. Its flashes of color inspired stories of lightning captured inside a stone—the image behind this guide’s original name. These are cultural meanings and folklore, which can make a gift personal without promising a physical effect.
Where does opal come from?
Australia is especially associated with opal: Lightning Ridge in New South Wales is known for black opal, Queensland for boulder opal, and South Australia for white opal. Ethiopia and Mexico are also important sources. A country name describes provenance; it does not, by itself, tell you a stone’s beauty, treatment or suitability for a particular setting.
October’s colorful crystal
Tourmaline: find your favorite color
Tourmaline is a family of minerals with an exceptional color range. Pink feels romantic; green can be quietly striking. Some crystals contain more than one color, making bicolor and watermelon tourmalines especially distinctive.
Choose tourmaline if you prefer a defined color, faceted sparkle and a gem with more resistance to everyday scratches than opal.
Pink Tourmaline Baguette Charm
Natural tourmaline · 14k yellow gold
Ask about Charm Pink Tourmaline Baguette 14K Yellow →Pink tourmaline meaning
Pink tourmaline is often associated with love and compassion. For an October birthday, its appeal can be as simple as a favorite shade of pink or a color that recalls a shared memory. The wearer’s taste matters more than assigning one meaning to every stone.
Where does tourmaline come from?
Tourmaline is mined in several parts of the world, including Brazil, Mozambique, Afghanistan, Pakistan and Madagascar. In the United States, Maine and California have historic tourmaline deposits. Different regions produce different ranges of material; ask for documentation if a specific geographic origin matters to your purchase.
The regions in this guide are general gemstone sources, rather than verified origins of the featured Nina Wynn pieces.
More ways to wear October
Natural opal and tourmaline varieties to know
October does not have a single birthstone color. Look beyond white opal and pink tourmaline to find a palette that feels like you.
Boulder opal
Opal forms within its host rock, often ironstone, which remains part of the finished gem. Its earthy matrix and bright color create a strong contrast.
Green tourmaline
A green alternative for an October birthday. Choose it for a fresh color accent, especially if the wearer already loves green clothing or jewelry.
Watermelon tourmaline
A crystal with a pink center and green outer zone, often shown in slices. Its color zoning is different from a design made with several separate tourmalines.
White, black, crystal and fire opal
White opal has a pale background; black opal has a darker body color that can make its flashes stand out. Crystal opal has a transparent to semitransparent body. Fire opal is named for its yellow, orange or red body color and may show little or no play-of-color. Common opal does not display the rainbow effect of precious opal.
What makes a beautiful gemstone?
For opal, look at the brightness, pattern and distribution of color from more than one angle. For tourmaline, consider the color you see face-up, the liveliness of the cut and visible inclusions. There is no need to buy the rarest variety to choose a memorable gift. A well-proportioned piece in a color the recipient loves is a thoughtful place to start.
Solid opal, doublets and lab-grown stones
A solid opal is one piece of opal. An opal doublet bonds a thin layer of opal to a backing; a triplet adds a transparent cap. These are assembled constructions and should be described clearly.
A doublet containing natural opal is different from a solid natural opal. Lab-grown opal is a separate disclosure, and “natural” does not automatically mean untreated. The Lilly and Athena pieces featured here are sold as opal doublets.
Ask about Athena 7mm Doublet Opal 14k Yellow Gold Convertible Earrings →Make it personal
Opal or tourmaline: which October birthstone should you choose?
Both are recognized October birthstones. Start with the look you love, then consider where and how often the jewelry will be worn.
Choose opal if…
- You love a rainbow that changes as you move.
- You want a distinctive pendant or pair of earrings.
- You enjoy a gem with an individual color pattern.
- You are comfortable with careful handling and gentle cleaning.
For an opal ring, favor a protective setting and be mindful of scratches and impacts.
Choose tourmaline if…
- You want pink, green or a mix of colors.
- You prefer a defined hue and faceted sparkle.
- Greater scratch resistance is a priority.
- You want a color accent for an ear stack or charm collection.
A secure setting still matters. Tourmaline can chip or fracture if struck.
| Feature | Opal | Tourmaline |
|---|---|---|
| Look | Shifting play-of-color in precious opal | Defined hues; some crystals have multiple colors |
| Mohs hardness | 5–6.5 | 7–7.5 |
| Common sources | Australia, Ethiopia, Mexico | Brazil, Mozambique, Afghanistan |
| Style direction | Luminous pendants and earrings | Colorful studs, charms and ear stacks |
| Care priority | Avoid scratches, impacts, heat and soaking doublets | Avoid impacts, heat and sudden temperature changes |
Mohs hardness measures scratch resistance. It does not measure resistance to breaking. Setting design, stone condition and wear habits also matter.
How to care for opal and tourmaline jewelry
Opal care
Clean solid opal gently with warm water, mild soap and a soft cloth. Avoid ultrasonic and steam cleaners, high heat and abrupt temperature changes.
For opal doublets and triplets, avoid soaking or prolonged water exposure, which may affect the adhesive. Remove doublet jewelry before swimming or bathing and follow the instructions for the exact piece.
Tourmaline care
Use warm, mildly soapy water and gentle cleaning. Avoid ultrasonic and steam cleaning, strong heat and sudden temperature changes.
Remove gemstone jewelry before exercise, gardening and heavy household work. Store pieces separately so harder stones and metal edges do not rub against them.
Let perfume and lotions dry before putting jewelry on. If a stone moves in its setting, stop wearing the piece and have it checked before cleaning or wearing it again.
How to choose an October birthstone gift
A birthstone gives you the occasion; the recipient’s style gives you the direction. Notice whether they wear delicate pendants, small studs or earrings with movement before choosing the stone and design.
Three details to check before gifting
- The jewelry format. A pendant is a useful option when you do not know a ring size. For earrings, check the intended piercing and the recipient’s preferred style.
- What is included. Ear charms may be sold individually and may need compatible hoops or studs. Check the product page before planning a pair or complete ear stack.
- The stone and construction. Look for clear material details, including an opal doublet construction or lab-grown diamond accents, and care instructions the recipient can keep.
For a restrained look, choose one birthstone accent and simple gold around it. For more color, pick two shades that already appear in the wearer’s wardrobe. Explore our jewelry gift guide for more ideas.
The Nina Wynn edit
October birthstone jewelry to explore
See the individual product pages for current availability, dimensions, materials, quantities and what is included.

Gemstone Threadless Flat Back Earring | 14K Yellow Gold
Solid 14K Yellow Gold / Tourmaline Pink
View jewelry & options
Gemstone Threadless Flat Back Earring | 14K White Gold
Solid 14K White Gold / Pink Tourmaline
View jewelry & options
Forged Multi Tourmaline Cigar Band Ring | Sterling Silver
Tourmaline Multi / 2.5mm / 7
View jewelry & options
Permanent Bracelet Healing Gemstone 6-7.5'' | 14K Yellow
Solid 14K Yellow Gold / Tourmaline Multi
View jewelry & options
Permanent Bracelet Healing Gemstone 6-7.5'' | 14/20 Gold Filled
Gold Filled Yellow / Tourmaline Multi
View jewelry & options
Rock Candy Natural Gemstone 14k Yellow Gold Connectors for Permanent Jewelry
Solid 14K Yellow Gold / Tourmaline Pink / Single
View jewelry & optionsOctober birthstone FAQs
What are the two birthstones for October?
Opal and tourmaline are October’s birthstones. Opal is associated with shifting play-of-color, while tourmaline offers many colors, including pink and green.
Is October’s birthstone pink or white?
It can be either, and more. White opal and pink tourmaline are familiar choices, but opal has several body colors and tourmaline comes in a broad palette.
Is green tourmaline an October birthstone?
Yes. Tourmaline is an October birthstone, and green is one of its natural colors. You do not have to choose pink for a meaningful October gift.
Which is harder: opal or tourmaline?
Tourmaline is harder at 7–7.5 on the Mohs scale, compared with opal at 5–6.5. It resists scratches better, but both stones still need protection from impacts and heat.
Can I wear an opal ring every day?
Opal is a softer gem and needs careful wear. A protective setting helps, but rings are exposed to more contact than pendants and earrings. Consider your activities and willingness to remove the ring when needed.
Is an opal doublet a solid natural opal?
No. A doublet joins an opal layer to a separate backing. It may contain natural opal, but it is an assembled construction and requires its own care precautions.
Can I wear a birthstone if I was not born in October?
Yes. Choose opal or tourmaline whenever you love the color or design. The birthstone association adds a gifting idea without limiting who can enjoy the jewelry.
How should I clean October birthstone jewelry?
Use gentle cleaning with warm, mildly soapy water, following the instructions for the exact piece. Avoid ultrasonic and steam cleaners. Do not soak opal doublets or triplets.
Explore all 12 birthstone guides
Return to the complete birthstone guide for the month-by-month chart, colors and care.
Ways to wear October birthstones
Start with a color you enjoy, then choose a scale and setting that fit your routine. A small stud adds a quiet accent; a hoop, charm or pendant can give the stone more presence. Compare the actual gemstone, dimensions and selling unit on the product page before choosing.
For a personal gift, combine a birthstone with a favorite metal or an existing jewelry collection. Softer or more delicate stones need a protected setting and thoughtful wear. A birthstone is a personal connection, so you can choose any month or color that feels meaningful.
Explore these gemstones
Find a piece to make it yours
Explore our current collections for the latest designs and options. For help comparing color, size or styling, visit a Nina Wynn studio.