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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
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2.26ct Green Tourmaline, Emerald Cut, VS

7.3 x 7 mm

$ 112.55

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1.03ct Multicolor Opal, Oval, Transparent

9.2 x 6.4 mm

$ 33.86

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0.95ct Multicolor Opal, Oval, Translucent

9 x 7 mm (calibrated)

$ 41.63

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0.98ct Multicolor Chocolate Opal, Oval, Translucent

8 x 6 mm (calibrated)

$ 32.21

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1.23ct Pink Tourmaline, Round, Transparent

6.5 mm (calibrated)

$ 49.00

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1.69ct Multicolor Opal, Pear Shape, Transparent

11 x 8.3 mm

$ 72.38

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0.85ct Multicolor Opal, Oval, Opaque

8 x 6 mm (calibrated)

$ 25.40

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1.49ct Multicolor Black Opal, Baguette, Translucent

10 x 7 mm (calibrated)

$ 45.36

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1.36ct Yellow Tourmaline, Oval, Transparent

7.7 x 5.7 mm

$ 22.54

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1.82ct Orange Fire Opal, Oval, Transparent

10 x 8 mm (calibrated)

$ 89.73

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2.74ctw Multicolor Black Opal, Oval, Opaque

9 x 7 mm (calibrated)

$ 90.06

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1.56ct Green Tourmaline, Emerald Cut, VS

22.2 x 3.2 mm

$ 34.18

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12.95ct Multicolor Boulder Opal, Oval, Opaque

23.1 x 12.3 mm

$ 64.49

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2.90ctw Pink Tourmaline, Oval, Transparent

8.2 x 6.3 mm

$ 48.07

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6.08ct Multicolor Boulder Opal, Oval, Opaque

16.1 x 9.9 mm

$ 30.28

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7.64ct Black Tourmaline, Pear Shape, Opaque

15.6 x 10.9 mm

$ 38.05

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0.68ct Orange Fire Opal, Oval, Transparent

8 x 6 mm (calibrated)

$ 19.37

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1.60ct Pink Tourmaline, Emerald Cut, VS-SI

7.6 x 5.3 mm

$ 115.69

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1.57ct Multicolor Opal, Oval, Translucent

10 x 8 mm (calibrated)

$ 39.09

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1.81ct Pink Tourmaline, Emerald Cut, VS

11.4 x 4.7 mm

$ 130.88

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2.03ct Multicolor Boulder Opal, Fancy, Opaque

9.3 x 7.2 mm

$ 10.15

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1.47ct Pink Tourmaline, Oval, VS

7 x 6.6 mm

$ 225.48

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1.34ct Green Tourmaline, Emerald Cut, VVS

11.6 x 3.7 mm

$ 36.70

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4.24ct Multicolor Opal Triplet, Fancy, Opaque

14.2 x 11.1 mm

$ 105.58

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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

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

A pleasant experience and many choices to choose from

Posted By Krackenking in November, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Will know more once order received

Posted By Jim in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.

Posted By DNaber in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good selection prices are reasonable!

Posted By ToRa62 in April, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.

Posted By Jen in December, 2025
Source: Bizrate
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