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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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1.23ct Pink Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 20.38

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0.82ct Multicolor Black Opal, Cushion, Translucent

8.6 x 5.7 mm

$ 24.96

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3.01ct Multicolor Opal Triplet, Oval, Opaque

12 x 10 mm (calibrated)

$ 74.95

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1.02ct Pink Tourmaline, Emerald Cut, VS-SI

9.6 x 3.8 mm

$ 77.11

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10.23ct Black Tourmaline, Emerald Cut, Opaque

16.7 x 9.8 mm

$ 50.95

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1.52ctw Multicolor Opal, Oval, Opaque

8 x 6 mm (calibrated)

$ 49.96

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1.44ct Red Tourmaline, Oval, VVS-VS

7.6 x 6.5 mm

$ 215.14

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6.38ct Yellow Cat'S Eye Opal, Oval, Opaque

14.3 x 10.9 mm

$ 19.07

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1.09ct Multicolor Opal, Oval, Transparent

10 x 7 mm (calibrated)

$ 27.50

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0.71ct Multicolor Chocolate Opal, Oval, Translucent

8 x 6 mm (calibrated)

$ 21.21

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14.17ct Green Opal, Oval, Opaque

17.2 x 13.9 mm

$ 30.34

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3.03ct Purple Cat'S Eye Tourmaline, Cushion, Translucent

10.3 x 6.6 mm

$ 452.68

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1.48ct Pink Tourmaline, Oval, VS

9 x 6.6 mm

$ 147.41

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1.74ctw Multicolor Black Opal, Oval, Translucent

8 x 6 mm (calibrated)

$ 57.19

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1.38ct Multicolor Black Opal, Pear Shape, Opaque

12 x 8 mm (calibrated)

$ 35.38

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1.43ct Green Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 26.10

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1.34ct Brown Tourmaline, Oval, VVS-VS

7.1 x 5.9 mm

$ 70.47

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3.36ct Pink Tourmaline, Emerald Cut, SI

9.5 x 7.4 mm

$ 138.05

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2.27ct Pink Tourmaline, Oval, Transparent

9 x 7 mm (calibrated)

$ 41.44

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0.84ct Green Tourmaline, Emerald Cut, VVS-VS

7.9 x 3.6 mm

$ 41.83

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5.51ct Multicolor Black Opal, Oval, Opaque

16 x 12 mm (calibrated)

$ 164.64

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0.72ct Green Tourmaline, Baguette, VVS

5.9 x 3.9 mm

$ 25.10

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0.91ct Pink Tourmaline, Round, Transparent

6 mm (calibrated)

$ 15.08

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0.81ct Multicolor Opal, Oval, Opaque

9 x 7 mm (calibrated)

$ 24.20

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

Could not get it to work 25 times.

Posted By Dock in July, 2026
Source: Bizrate

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 -> 10 star ratings

Great! Affordable

Posted By Spinellope in April, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Plan on purchasing on an ongoing basis. So far.....so good....

Posted By Jim in January, 2026
Source: Bizrate

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 -> 9 star ratings

The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

Posted By Emmanuel in October, 2025
Source: Bizrate
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