90,000+Happy Customers
20+Years
WorldwideShipping
Cart
Free Report Included
Worldwide Shipping
30 Day Returns
Help Center Shipping Payment and Checkout Returns Certificates Contact Us
Home Gemstones October Birthstones

October Birthstones: Opal and Tourmaline

Shop natural loose October birthstones, from shimmering opal to vibrant tourmaline, ideal for custom jewelry, meaningful gifts and gemstone collections.

October Birthstones Weight
October Birthstones Size
October Birthstones Clarity
October Birthstones Price

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color October Birthstones
Black October Birthstones
Blue October Birthstones
Brown October Birthstones
Golden October Birthstones
Gray October Birthstones
Green October Birthstones
Multicolor October Birthstones
Orange October Birthstones
Pink October Birthstones
Purple October Birthstones
Red October Birthstones
Turquoise October Birthstones
Violet
White October Birthstones
Yellow October Birthstones
Single
Pairs
Lots
Faceted
Cabochons
X
Clear All

1.50ct Multicolor Opal, Oval, Transparent

10.4 x 7.4 mm

$ 37.35

View Gem

1.19ct Green Tourmaline, Baguette, VVS-VS

5.9 x 4.6 mm

$ 41.48

View Gem

0.63ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 25.10

View Gem

0.60ct Green Tourmaline, Baguette, VVS

10.3 x 2.6 mm

$ 20.92

View Gem

0.86ct Multicolor Opal, Oval, Translucent

9.4 x 6 mm

$ 36.84

View Gem

8.17ct Black Tourmaline, Emerald Cut, Opaque

17.3 x 7.3 mm

$ 40.69

View Gem

3.37ct Multicolor Opal, Oval, Opaque

12 x 10 mm (calibrated)

$ 100.70

View Gem

1.18ct Multicolor Black Opal, Oval, Opaque

9 x 7 mm (calibrated)

$ 31.03

View Gem

7.86ctw Multicolor Opal Triplet, Oval, Opaque

14 x 10 mm (calibrated)

$ 195.71

View Gem

16.28ct Black Tourmaline, Emerald Cut, Opaque

18.8 x 11.1 mm

$ 81.07

View Gem

0.91ct Multicolor Black Opal, Oval, Translucent

9 x 7 mm (calibrated)

$ 24.92

View Gem

0.97ct Yellow Tourmaline, Round, Transparent

6 mm (calibrated)

$ 16.28

View Gem

31.67ct Multicolor Matrix Opal, Marquise, Opaque

44.7 x 19.1 mm

$ 53.63

View Gem

0.80ct Green Tourmaline, Emerald Cut, VVS

10 x 3 mm

$ 39.84

View Gem

16.50ct Green Opal, Oval, Opaque

18 x 13 mm (calibrated)

$ 35.34

View Gem

1.42ct Green Tourmaline, Emerald Cut, VS

8.4 x 5.3 mm

$ 165.00

View Gem

0.90ct Multicolor Opal, Oval, Opaque

8 x 6 mm (calibrated)

$ 26.89

View Gem

1.22ct Green Tourmaline, Emerald Cut, VS

15.3 x 3.4 mm

$ 26.66

View Gem

1.47ct Green Tourmaline, Emerald Cut, VVS-VS

14.1 x 3.3 mm

$ 32.21

View Gem

1.61ct Multicolor Opal, Oval, Transparent

10.7 x 7.8 mm

$ 40.09

View Gem

4.55ct Multicolor Black Opal, Round, Opaque

12 mm (calibrated)

$ 135.95

View Gem

5.66ct Multicolor Black Opal, Sphere / Ball, Opaque

11 mm (calibrated)

$ 169.12

View Gem

1.72ct Multicolor Tourmaline, Emerald Cut, VS

7.4 x 5.8 mm

$ 385.45

View Gem

0.69ct Green Tourmaline, Emerald Cut, VVS-VS

6.8 x 3.4 mm

$ 34.36

View Gem
1 2 3
...
164
Choose Page
1 - 228

Why Buy October Birthstones from GemSelect?

Shop Loose October Birthstones

October is one of the most colorful birthstone months, represented by both opal and tourmaline. Together, these gems offer a wide range of looks, from opal’s shifting play-of-color to tourmaline’s broad spectrum of pink, green, blue and multi-color varieties. This category brings together loose October birthstones for customers choosing gems for jewelry designs, personal collections or birthday gifts.

Opal: A Distinctive October Gem

Opal is loved for its unique optical character. Many opals display flashes of color that can change as the stone moves, making each gem visually individual. Loose opals are popular for pendants, earrings, rings and one-of-a-kind jewelry pieces where the gemstone can be the main focus of the design.

Tourmaline: Colorful and Versatile

Tourmaline is another traditional October birthstone and is valued for its impressive color variety. Pink tourmaline is especially popular for October jewelry, while green, blue and bi-color tourmalines give shoppers many design options. Its range of shapes and colors makes tourmaline a versatile choice for custom gemstone jewelry.

Loose opal and tourmaline October birthstones

Choosing Between Opal and Tourmaline

If you want a gemstone with dramatic color movement and an organic, artistic appearance, opal is a beautiful choice. If you prefer a more classic faceted gemstone with vivid body color, tourmaline may be the better fit. Many customers also combine both October birthstones in a custom design to celebrate the full personality of the month.

Buying Loose October Birthstones

When selecting a loose gemstone, consider the intended jewelry style, setting type, color preference, shape and size. Opals are often chosen for their pattern and color play, while tourmalines are commonly selected by hue, clarity, cut and overall brilliance. Review each gemstone’s individual details before purchasing, as natural gems can vary significantly from stone to stone.

October Birthstone FAQs

What are the birthstones for October?

The traditional October birthstones are opal and tourmaline. Both are widely used in birthstone jewelry and offer very different visual styles.

Is opal or tourmaline better for October jewelry?

Neither is universally better; it depends on the design and personal preference. Opal is chosen for its distinctive play-of-color, while tourmaline is chosen for its wide color range and faceted gemstone appeal.

What color is the October birthstone?

October birthstones are not limited to one color. Opal can show many shifting colors, while tourmaline occurs in a broad range that includes pink, green, blue and multi-color gems.

Can I use loose October birthstones for custom jewelry?

Yes. Loose opal and tourmaline gemstones are commonly selected for custom rings, pendants, earrings and other personalized jewelry designs. Always choose a setting style appropriate for the specific gem.

Are natural October birthstones good gifts?

Natural loose opal and tourmaline can make meaningful gifts for October birthdays, anniversaries or personal milestones, especially when selected in the recipient’s favorite color or jewelry style.

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

selection was broad and the check out was quick. Great site

Posted By JC Karl in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!

Posted By Lkcisneros in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very pleasant

Posted By Varun in June, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Great website, easy to navigate, and loads quickly. Have bought here before, very pleased!

Posted By SallyO in February, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!

Posted By JC in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

IT WAS GREAT SIMPLE I WAS ABLE TO MAKE AN ACCOUNT EASY AND WAS ABLE TO FAVORITE ALL OF MY FINAL SELECTED GEMS, I JUST LOVE IT.

Posted By YE in October, 2025
Source: Bizrate
Enlarged Gemstone Image