If you’re an October baby—or shopping for one—you’ve likely wondered: what is the birthstone for October? The answer holds more than just a pretty gem; it’s a stone steeped in history, symbolism, and versatile beauty. The global personalized jewelry market was valued at approximately $42.5 billion in 2024 and is projected to grow at a Compound Annual Growth Rate (CAGR) of about 8.6% from 2024 to 2031, reaching a value of around $76.5 billion by 2031. According to the American Gem Society, October is unique in boasting two official birthstones: opal and tourmaline. This dual distinction lets October celebrants choose a stone that aligns with their style—whether they crave opal’s iridescent fire or tourmaline’s vibrant, solid hues. And the demand speaks for itself: Etsy’s 2024 Birthstone Trend Report shows searches for “October birthstone jewelry” jumped 94% year-over-year, with 68% of buyers prioritizing “meaningful design” alongside beauty. Let’s dive into everything you need to know about October’s birthstones—from their origins to how to wear them.
What Is the Birthstone for October? Breaking Down the Two Gems
Opal: October’s Iridescent Icon
Opal takes center stage as one of October’s most iconic birthstones, celebrated for its “play of color”—the dazzling flashes of red, blue, green, and purple that dance across its surface when tilted. Unlike most gems, opal isn’t a single mineral but a hydrated silica stone, formed over millions of years when silica-rich water seeps into rock crevices and hardens. The most prized varieties include Australian black opal (with a dark body tone that makes its colors pop), white opal (a light base with soft hues), and fire opal (a warm orange-red stone with subtle iridescence). Opal’s unique appearance has made it a favorite for centuries, with ancient civilizations calling it the “stone of the gods” for its rainbow-like glow.
Tourmaline: October’s Vibrant Alternative
Tourmaline, October’s second birthstone, is beloved for its extraordinary range of colors—from neon pink and electric blue to deep green and even color-changing varieties (like watermelon tourmaline, which blends pink and green). This diversity earns it the nickname “the rainbow gem.” Tourmaline is a crystalline mineral found in locations like Brazil, Madagascar, and California, and its color is determined by trace elements: manganese creates pink hues, iron produces green, and lithium results in blue. Unlike opal, tourmaline has a solid, consistent color (no play of light) and a durable hardness of 7–7.5 on the Mohs scale, making it ideal for everyday wear. It’s a top pick for those who prefer bold, long-lasting color.
A Brief History: How Opal and Tourmaline Became October’s Birthstones
Opal’s Ancient Legacy
Opal’s history dates back to 2500 BCE, when ancient Egyptians mined it in the Sinai Peninsula and believed it held the power of all other gems. The Romans were equally enchanted: Emperor Nero was said to own a massive opal called “Nero’s Opal,” valued at millions of sesterces. During the Middle Ages, opal was associated with purity and hope, worn by nobility to symbolize wealth and good fortune. It wasn’t until the 19th century that opal became officially linked to October, thanks to the 1870s “birthstone calendar” published by Tiffany & Co., which standardized gemstone-birth month pairings.
Tourmaline’s Rise to Prominence
Tourmaline’s journey to becoming an October birthstone is more recent. While it was discovered in the 16th century (the Dutch called it “turmalijn,” meaning “stone that attracts ash”), it gained popularity in the 19th century when large deposits were found in California. Its vibrant colors and durability made it a hit among Victorian jewelers, who used it in brooches and necklaces. In 1912, the National Association of Jewelers (now the Jewelers of America) officially added tourmaline as a second birthstone for October, recognizing its growing appeal and complementing opal’s more delicate nature.
What Do October’s Birthstones Symbolize? Meaning Beyond Beauty
Opal’s Symbolism: Hope, Creativity, and Emotional Depth
Opal’s play of color has long made it a symbol of creativity and inspiration—its ever-changing hues mirror the imagination. It’s also linked to hope and emotional balance: ancient cultures believed opal could calm anxiety and strengthen relationships. In modern crystal healing, opal is said to enhance self-expression and connect the wearer to their intuition. For October babies, opal is more than a birthstone—it’s a reminder to embrace their unique, multifaceted selves, just like the gem’s many colors.
Tourmaline’s Symbolism: Protection, Joy, and Positivity
Tourmaline’s symbolism varies slightly by color, but it’s universally associated with protection and positivity. Pink tourmaline (the most popular variety for October) represents love and compassion, while green tourmaline symbolizes growth and abundance. Black tourmaline (though not an October-specific hue) is known for warding off negative energy. Overall, tourmaline is seen as a “stone of joy”—its bright colors are thought to lift mood and encourage optimism. For those who choose tourmaline as their October birthstone, it’s a symbol of resilience and the courage to embrace life’s vibrancy.
Popular Styles of October Birthstone Jewelry
Opal Jewelry: Elegant and Eye-Catching
Opal’s iridescence shines in a range of jewelry styles, from delicate to dramatic:
Opal Solitaire Ring: A classic choice, featuring a single opal (often black or white) set in gold or silver. Perfect for engagement rings or everyday wear, it lets the gem’s play of color take center stage.Opal Pendant Necklace: A small opal pendant on a thin chain is ideal for layering or solo wear. Look for designs with a bezel setting to protect the opal’s delicate surface.Opal Earrings: Studs or small drop earrings with opal accents add subtle sparkle to any outfit. Fire opal earrings are a great choice for adding a warm pop of color to fall looks.
Tourmaline Jewelry: Bold and Versatile
Tourmaline’s vibrant colors make it perfect for statement pieces and everyday staples alike:
Pink Tourmaline Bracelet: A strand of pink tourmaline beads or a tennis bracelet with cut tourmaline stones adds a feminine touch to workwear or casual outfits.Watermelon Tourmaline Ring: This color-changing variety (pink core, green edge) is a unique choice for a birthstone ring, blending two hues in one gem.Tourmaline Statement Necklace: A large, faceted tourmaline pendant (in blue or green) on a thick chain makes a bold statement for special occasions like birthdays or anniversaries.
How to Wear October’s Birthstones (For Every Occasion)
Everyday Wear: Subtle and Durable
For daily wear, prioritize protection (especially for opal) and understated style. A small opal pendant on a 14k gold chain pairs perfectly with a t-shirt and jeans, while a pink tourmaline stud earring adds a pop of color to a blazer and slacks. Opt for bezel settings for opal (they shield the gem from scratches) and avoid wearing opal during activities like gardening or working out, as it’s more delicate. Tourmaline, with its higher hardness, can handle more wear—feel free to layer a tourmaline bracelet with other bangles.
Special Occasions: Shine and Sparkle
For birthdays, weddings, or parties, go bold with October’s birthstones. A black opal cocktail ring with diamond accents complements a little black dress beautifully, while a watermelon tourmaline necklace adds a unique twist to a formal gown. For a cohesive look, pair opal earrings with a matching pendant, or mix pink tourmaline with rose gold jewelry for a romantic vibe. Remember: opal’s iridescence pairs best with neutral tones (black, white, beige), while tourmaline’s bright colors can stand up to bold patterns and hues.
Gifting: Personalized Touches
When gifting October birthstone jewelry, add a personal touch to make it meaningful. Engrave an opal pendant with the recipient’s birth date, or choose a tourmaline color that matches their personality (pink for a compassionate friend, green for someone who loves nature). Pair the jewelry with a note explaining the stone’s symbolism—e.g., “This opal is for your creative spirit, just like the gem’s many colors.” For new parents, a small opal or tourmaline charm bracelet makes a cherished baby gift.
How to Care for October’s Birthstones
Caring for Opal: Protect Its Delicate Glow
Opal is one of the more delicate birthstones (5.5–6.5 on the Mohs scale) and requires gentle care:
Avoid Water and Chemicals: Opal is porous and can absorb water, which may damage its play of color. Remove opal jewelry before showering, swimming, or applying perfume, lotion, or makeup.Clean Gently: Wipe opal with a soft, dry microfiber cloth to remove dirt. If needed, use a damp cloth (no soap) and pat dry immediately.Store Properly: Keep opal in a soft jewelry pouch away from other gems (to prevent scratching). Avoid extreme temperatures, as heat can dry out the stone and cause cracking.
Caring for Tourmaline: Keep Its Color Bright
Tourmaline is more durable than opal but still needs care to maintain its vibrancy:
Clean Regularly: Mix warm water with mild dish soap, dip a soft brush in the solution, and gently scrub tourmaline (paying attention to settings). Rinse and pat dry with a microfiber cloth.Avoid Harsh Chemicals: Remove tourmaline before using cleaning products or swimming in chlorinated water, which can dull its color.Store Safely: Store tourmaline in a separate jewelry compartment to prevent scratches from harder gems like diamonds.
Where to Buy October Birthstone Jewelry
Etsy: Handmade and Personalized
Etsy is the top destination for unique October birthstone jewelry, with independent jewelers offering handmade opal and tourmaline pieces. Search for “October birthstone opal necklace” or “pink tourmaline birthstone ring” to find personalized options—many sellers offer engraving or custom settings. Prices range from $30 (for a small opal pendant) to $500+ (for a black opal ring with diamonds).
Fine Jewelry Retailers: Heirloom-Quality Pieces
For high-quality, heirloom-worthy jewelry, shop fine retailers like James Allen, Blue Nile, or local jewelers. These stores offer certified opals (ensuring authenticity and quality) and tourmaline pieces in 14k or 18k gold. Look for black opal jewelry from Australian mines (the most reputable source) or rare watermelon tourmaline pieces. Prices start at $200 and go up to $10,000+ for rare opal varieties.
Budget-Friendly Options: Fast Fashion and Department Stores
If you’re on a budget, fast fashion brands like Zara and H&M, or department stores like Target, offer affordable October birthstone jewelry. These pieces often feature lab-created opal or simulated tourmaline in silver-plated settings, costing $10–$50. While they’re not as durable as fine jewelry, they’re great for trying the trend or gifting a casual piece to a teen.
What Is the Birthstone for October? Final Thoughts
October’s dual birthstones—opal and tourmaline—offer something for every style and personality: opal’s ethereal glow for the creative, tourmaline’s bold color for the vibrant. Whether you’re an October baby celebrating your birthday or shopping for a loved one, these gems carry meaning that goes beyond beauty—symbolizing hope, joy, and uniqueness. With the right care, an October birthstone piece can be worn and cherished for years, even passed down as a family heirloom. Ready to find your perfect October birthstone jewelry? Explore our curated collection of opal and tourmaline pieces to discover a gem that shines as bright as the October celebrant in your life.
