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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
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1.41ct Multicolor Opal, Oval, Transparent

9.4 x 6.2 mm

$ 38.63

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1.57ctw Multicolor Opal, Oval, Opaque

8 x 6 mm (calibrated)

$ 51.60

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1.36ct Pink Tourmaline, Emerald Cut, VS

8.3 x 4.7 mm

$ 98.35

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11.99ct Multicolor Black Opal, Oval, Opaque

20 x 15 mm (calibrated)

$ 497.59

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0.61ct Green Tourmaline, Emerald Cut, VVS-VS

8.9 x 3 mm

$ 15.19

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1.05ct Green Tourmaline, Emerald Cut, VS

11.2 x 3.6 mm

$ 22.06

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8.54ct Black Tourmaline, Oval, Opaque

14 x 12 mm (calibrated)

$ 42.53

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12.31ct Multicolor Boulder Opal, Oval, Opaque

25.9 x 17.1 mm

$ 61.30

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2.42ctw Multicolor Opal, Oval, Opaque

9 x 7 mm (calibrated)

$ 72.31

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27.51ct Black Tourmaline, Emerald Cut, Opaque

38.1 x 8.9 mm

$ 137.00

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3.56ct Multicolor Opal Triplet, Fancy, Opaque

17.4 x 8.8 mm

$ 88.64

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1.67ct Multicolor Opal, Pear Shape, Translucent

12.6 x 7.6 mm

$ 64.04

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1.25ct Orange Fire Opal, Oval, Transparent

9.4 x 6.8 mm

$ 43.58

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4.32ct Multicolor Opal Triplet, Fancy, Opaque

18.2 x 9.1 mm

$ 107.57

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1.71ctw Multicolor Opal, Oval, Opaque

8 x 6 mm (calibrated)

$ 56.21

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1.97ctw Pink Tourmaline, Round, Transparent

6 mm (calibrated)

$ 32.65

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1.09ct Multicolor Opal, Fancy, Translucent

7.9 x 6.9 mm

$ 30.39

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0.82ct Green Tourmaline, Emerald Cut, VS

12.1 x 2.9 mm

$ 21.56

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5.19ctw Multicolor Opal, Square, Transparent

4.4 x 4.3 mm

$ 37.06

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2.05ct Multicolor Opal, Fancy, Translucent

11.2 x 7.1 mm

$ 57.17

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2.57ct Pink Tourmaline, Emerald Cut, SI

9 x 6 mm (calibrated)

$ 194.28

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0.51ct Multicolor Opal, Oval, Opaque

7.6 x 6 mm

$ 15.24

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0.52ct Green Tourmaline, Baguette, VS-SI

10.6 x 2.3 mm

$ 18.13

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0.46ct Multicolor Opal, Oval, Opaque

7 x 5 mm (calibrated)

$ 13.74

View Gem
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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 -> 9 star ratings

I've made several purchases over the last 8 years and I've never been less than happy with any of them.

Posted By Jess in July, 2026
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Overall Rating -> 10 star ratings

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025
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Overall Rating -> 10 star ratings

Recomendado Totalmente Los Productos Se Entregaron A Tiempo

Posted By Alexis in May, 2026
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Overall Rating -> 10 star ratings

Easy to use. No issues. Large selection of gems.

Posted By CLTCJH in February, 2026
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Overall Rating -> 10 star ratings

I found the filter options excellent. Yours was the third site I visited (asked chat got for reputable online sellers of loose gems) and the first I purchased from as I was able to easily find what I was looking for.

Posted By Kelly in May, 2026
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Overall Rating -> 10 star ratings

Very pleasant

Posted By Varun in June, 2026
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