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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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0.83ct Green Tourmaline, Baguette, VVS-VS

10.8 x 3.1 mm

$ 28.93

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3.72ct Multicolor Black Opal, Round, Translucent

11.5 mm

$ 108.37

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2.36ct Green Tourmaline, Emerald Cut, VVS-VS

19.2 x 3.8 mm

$ 64.64

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0.59ct Pink Tourmaline, Round, Transparent

5 mm (calibrated)

$ 23.51

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0.81ct Orange Fire Opal, Oval, Transparent

8 x 6 mm (calibrated)

$ 23.07

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1.65ct Green Tourmaline, Emerald Cut, VVS

20.7 x 3 mm

$ 45.20

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0.93ct Pink Tourmaline, Round, Transparent

6 mm (calibrated)

$ 12.85

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1.73ct Multicolor Opal, Oval, Opaque

9 x 7 mm (calibrated)

$ 51.69

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7.64ct Multicolor Black Opal, Pear Shape, Translucent

19.4 x 13 mm

$ 228.28

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0.93ct Pink Tourmaline, Round, Transparent

6 mm (calibrated)

$ 15.42

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0.95ct Multicolor Opal, Oval, Opaque

9 x 7 mm (calibrated)

$ 28.39

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36.19ctw Multicolor Tourmaline, Flower Cut, Transparent

27.8 x 17.5 mm

$ 705.41

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1.48ct Green Tourmaline, Oval, Transparent

8 x 6 mm (calibrated)

$ 25.36

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3.79ct Multicolor Black Opal, Oval, Opaque

14.7 x 10.6 mm

$ 110.41

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2.51ct Multicolor Opal Triplet, Oval, Opaque

11 x 9 mm (calibrated)

$ 62.50

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8.62ct Multicolor Opal Triplet, Fancy, Opaque

17.9 x 14.2 mm

$ 214.64

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1.93ct Red Fire Opal, Oval, Transparent

11.3 x 8.4 mm

$ 67.28

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2.00ct Green Tourmaline, Emerald Cut, VVS-VS

20 x 3.5 mm

$ 82.17

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1.85ct Multicolor Opal, Oval, Translucent

11.1 x 8.5 mm

$ 46.07

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0.70ct Multicolor Opal, Oval, Opaque

9 x 7 mm (calibrated)

$ 20.92

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1.17ct Green Tourmaline, Emerald Cut, VVS

13.7 x 3.3 mm

$ 28.20

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1.55ct Green Tourmaline, Cushion, VVS-VS

6.7 x 5.9 mm

$ 231.57

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1.58ct Multicolor Opal, Pear Shape, Translucent

9.9 x 7.6 mm

$ 34.62

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1.58ctw Multicolor Opal, Oval, Opaque

8 x 6 mm (calibrated)

$ 39.34

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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 -> 10 star ratings

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

Posted By CLTCJH in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I liked the selection of gems, and price. I did not like your PayPal process. I already have a PP account and you want me to sign up for another.

Posted By CLTCJH in May, 2026
Source: Bizrate

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.

Posted By Big Ricky in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Although the stones are smaller than I thought, I really don't think in millimeters, they are perfect. I plan to put one into a ring and the other into a necklace. Ordering was easy, contact kept me aware of how shipping was going, and delivery was sooner than expected. The quality of stones I have ordered in the past and this recent order is outstanding and stones I will be proud to wear.

Posted By Ktreva52 in June, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

I loved the selection of gemstones you have a to z

Posted By James in May, 2026
Source: Bizrate

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
Source: Bizrate
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