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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
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Lots
Faceted
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1.33ct Multicolor Black Opal, Round, Opaque

8 mm (calibrated)

$ 33.61

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0.99ct Green Tourmaline, Emerald Cut, VS-SI

7.8 x 4.2 mm

$ 49.30

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5.96ctw Multicolor Opal, Square, Transparent

4.9 x 4.8 mm

$ 42.31

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2.49ct Multicolor Opal Triplet, Fancy, Opaque

13 x 9 mm (calibrated)

$ 62.00

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1.44ct Multicolor Opal, Oval, Transparent

10 x 8 mm (calibrated)

$ 35.86

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1.51ct Pink Tourmaline, Oval, Transparent

7.8 x 5.7 mm

$ 19.24

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0.95ct Multicolor Opal, Oval, Opaque

8 x 6 mm (calibrated)

$ 28.39

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8.44ct Black Tourmaline, Pear Shape, Opaque

13.8 x 11.3 mm

$ 42.03

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3.76ctw Pink Tourmaline, Round, Transparent

7.5 mm (calibrated)

$ 64.45

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10.38ct Multicolor Boulder Opal, Fancy, Opaque

17.8 x 13.6 mm

$ 43.08

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6.01ct Multicolor Black Opal, Marquise, Opaque

18.3 x 9.5 mm

$ 249.42

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22.31ct Multicolor Opal, Oval, Opaque

28.9 x 13.8 mm

$ 66.67

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0.57ct Multicolor Opal, Oval, Opaque

7 x 5 mm (calibrated)

$ 17.03

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1.33ct Red Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 22.80

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1.04ct Multicolor Black Opal, Emerald Cut, Opaque

8.3 x 6.9 mm

$ 30.21

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1.51ct Green Tourmaline, Cushion, VVS-VS

6.6 x 6.1 mm

$ 175.46

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42.56ct Multicolor Boulder Opal, Fancy, Opaque

36.1 x 31 mm

$ 211.95

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4.09ct Green Tourmaline, Fancy, Translucent

14 x 12 mm (calibrated)

$ 44.81

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1.26ct Pink Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 20.88

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1.37ct Multicolor Opal, Oval, Translucent

9 x 7 mm (calibrated)

$ 39.18

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1.59ct Bi-Color Tourmaline, Oval, Transparent

10.6 x 6.7 mm

$ 47.70

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1.44ct Green Tourmaline, Emerald Cut, VS

16 x 3.2 mm

$ 37.86

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1.45ct Purple Tourmaline, Oval, VS

8.1 x 6.3 mm

$ 216.63

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1.26ct Pink Tourmaline, Emerald Cut, VVS

10 x 4.2 mm

$ 82.83

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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.

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Posted By Nik in June, 2026
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Overall Rating -> 10 star ratings

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

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Easy and functional

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It was all good

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

I purchased 4 gemstones in different sizes to be able to make a family ring for my granddaughter. I got exactly what I saw and they are absolutely beautiful! Shipping was quick compared to other gem stores I have dealt with! I will definitely order more stones from your company, as I am a collector and have several stones. You are my new go to company in the future

Posted By Liz in June, 2026
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Overall Rating -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

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