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

2.24ct Green Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 40.89

View Gem

1.54ct Pink Tourmaline, Cushion, VS

6.7 x 6 mm

$ 230.08

View Gem

1.63ct Pink Tourmaline, Emerald Cut, VVS-VS

6.6 x 5.5 mm

$ 117.87

View Gem

2.38ct Green Tourmaline, Emerald Cut, VVS-VS

27.8 x 3.3 mm

$ 68.42

View Gem

1.43ct Multicolor Black Opal, Oval, Translucent

9.4 x 7.3 mm

$ 35.61

View Gem

1.00ct Multicolor Opal, Pear Shape, Transparent

9.2 x 6.4 mm

$ 24.90

View Gem

4.17ct Multicolor Opal Triplet, Fancy, Opaque

18.1 x 9 mm

$ 103.83

View Gem

2.90ct Multicolor Black Opal, Oval, Transparent

13.1 x 8.5 mm

$ 96.28

View Gem

1.46ct Pink Tourmaline, Round, Transparent

7 mm (calibrated)

$ 25.03

View Gem

4.51ct Multicolor Black Opal, Oval, Opaque

14 x 10 mm (calibrated)

$ 131.39

View Gem

1.29ct Red Tourmaline, Oval, Transparent

7.6 x 6 mm

$ 22.11

View Gem

15.66ct Green Opal, Oval, Opaque

20 x 15 mm (calibrated)

$ 33.53

View Gem

5.11ct Multicolor Boulder Opal, Fancy, Opaque

12.3 x 10.7 mm

$ 25.45

View Gem

1.84ct Pink Tourmaline, Emerald Cut, VS

9.6 x 5.3 mm

$ 139.10

View Gem

0.71ct Multicolor Chocolate Opal, Oval, Opaque

8 x 6 mm (calibrated)

$ 21.21

View Gem

2.50ct Multicolor Black Opal, Sphere / Ball, Opaque

8 mm (calibrated)

$ 74.70

View Gem

22.18ct Black Tourmaline, Emerald Cut, Opaque

23.5 x 12.6 mm

$ 110.46

View Gem

3.60ct Multicolor Opal, Oval, Transparent

13.2 x 10.3 mm

$ 90.54

View Gem

0.70ct Orange Fire Opal, Oval, Transparent

8 x 6 mm (calibrated)

$ 13.80

View Gem

1.65ct Multicolor Opal, Pear Shape, Transparent

12 x 8 mm (calibrated)

$ 77.74

View Gem

1.29ct Multicolor Opal, Pear Shape, Transparent

11.8 x 7 mm

$ 49.47

View Gem

4.04ct Multicolor Opal Triplet, Fancy, Opaque

18.1 x 9 mm

$ 100.60

View Gem

3.77ct Multicolor Opal Triplet, Fancy, Opaque

17.6 x 9 mm

$ 93.87

View Gem

0.91ct Orange Opal, Pear Shape, Translucent

9.2 x 6.3 mm

$ 26.48

View Gem
1 2 3
...
197
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

Great prices!!! High quality gemstones.

Posted By Ricky in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My current project is something BLUE . Opal earrings with matching tennis bracelet for her wedding. The opals and sixty two sapphires VVS & VS are AMAZINGLY BEAUTIFUL. The private jewelers were impressed by the clarity and inclusion free of the sapphires . I want to say thank you for the High quality sapphires that I purchased for my daughtera's wedding.

Posted By My real name Dean or Wandering about in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

I loved the selection of gemstones you have a to z

Posted By James in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.

Posted By Tommyp in November, 2025
Source: Bizrate
Enlarged Gemstone Image