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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
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Lots
Faceted
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1.72ct Green Tourmaline, Emerald Cut, VVS

18.4 x 3.4 mm

$ 41.45

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3.13ct Multicolor Opal Triplet, Fancy, Opaque

15.5 x 9 mm

$ 77.94

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1.26ct Orange Tourmaline, Round, Transparent

6 mm (calibrated)

$ 20.88

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0.34ct Brown Chocolate Opal, Oval, Transparent

6.6 x 4.8 mm

$ 10.16

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1.33ct Multicolor Opal, Oval, Opaque

9 x 7 mm (calibrated)

$ 39.74

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1.85ctw Multicolor Black Opal, Oval, Opaque

9 x 7 mm (calibrated)

$ 60.81

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4.69ct Multicolor Opal, Oval, Transparent

14.3 x 10.5 mm

$ 117.91

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60.38ct Black Tourmaline, Emerald Cut, Opaque

40.2 x 14.4 mm

$ 300.69

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1.55ct Green Tourmaline, Emerald Cut, VVS-VS

21.7 x 3.1 mm

$ 37.05

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0.69ct Orange Fire Opal, Oval, Translucent

8 x 6 mm (calibrated)

$ 15.75

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2.39ctw Multicolor Opal, Oval, Opaque

9 x 7 mm (calibrated)

$ 78.55

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1.36ct Multicolor Black Opal, Cushion, Translucent

10 x 7 mm (calibrated)

$ 41.40

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11.80ct Green Opal, Oval, Opaque

16.5 x 13.9 mm

$ 25.27

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6.38ct Black Tourmaline, Oval, Opaque

12.9 x 10.4 mm

$ 31.77

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0.72ct Green Tourmaline, Emerald Cut, VS

5.4 x 4.4 mm

$ 35.86

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2.70ct Pink Tourmaline, Oval, Transparent

9 x 7 mm (calibrated)

$ 49.29

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1.01ct Multicolor Opal, Pear Shape, Transparent

8 x 6 mm (calibrated)

$ 25.15

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3.23ct Multicolor Opal Triplet, Fancy, Opaque

15.6 x 9.1 mm

$ 80.43

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1.98ct Green Tourmaline, Emerald Cut, VS

16.9 x 3.7 mm

$ 71.60

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0.80ct Green Tourmaline, Emerald Cut, VVS-VS

10.2 x 3.1 mm

$ 39.84

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5.82ct Multicolor Opal, Pear Shape, Translucent

19.2 x 11.4 mm

$ 144.92

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1.75ct Multicolor Black Opal, Oval, Opaque

10 x 8 mm (calibrated)

$ 44.87

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2.47ct Green Tourmaline, Emerald Cut, VVS

20.5 x 3.8 mm

$ 67.66

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1.85ct Green Tourmaline, Emerald Cut, VVS-VS

19.4 x 3.5 mm

$ 48.65

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 -> 7 star ratings

Overall the site is good to use and simple to navigate for what i needed and i liked that they are clear and detailed on the size shape and cut of the stones only input id like is for stones that have a specific refractive quality like moonstone in my case if theyd showcase the cut stones refraction so you know how it looks when buying

Posted By Revenant in August, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Always a good quality stone. Priced fairly and shipped promptly. Answers emails quickly

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

The website has a good selection, the interface is very intuitive.

Posted By PhoenixFeatherJewelry in January, 2026
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Overall Rating -> 8 star ratings

I've purchased things from GemSelect before. What you see is what you get, which is not always the case with gem sites online. You can find some good value with gem select, and I will buy from them again.

Posted By Meyeusername in March, 2026
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Overall Rating -> 10 star ratings

Enjoy every moment

Posted By Ferns in October, 2025
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Overall Rating -> 10 star ratings

Ia've been searching for a source to get my gemstones for awhile now and was very happy to come across this website. Amazing variety for any income.

Posted By Tarah in August, 2026
Source: Bizrate
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