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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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1.42ct Green Tourmaline, Oval, VS

6.9 x 6.5 mm

$ 165.00

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3.04ct Multicolor Opal Triplet, Fancy, Opaque

17 x 8.3 mm

$ 75.70

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19.38ct Multicolor Opal, Oval, Opaque

23 x 16.6 mm

$ 57.91

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1.86ct Multicolor Opal, Oval, Transparent

11.9 x 8.9 mm

$ 46.31

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1.29ct Orange Fire Opal, Oval, Transparent

9.4 x 6.6 mm

$ 44.97

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3.93ct Multicolor Opal Triplet, Pear Shape, Opaque

17.8 x 9 mm

$ 97.86

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2.23ct Multicolor Black Opal, Oval, Translucent

13 x 9 mm (calibrated)

$ 55.53

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6.81ct Multicolor Black Opal, Pear Shape, Opaque

21.6 x 11.8 mm

$ 282.62

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1.12ct Multicolor Black Opal, Pear Shape, Translucent

11.8 x 7 mm

$ 28.17

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1.38ct Multicolor Black Opal, Pear Shape, Opaque

11.4 x 7.7 mm

$ 40.09

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1.15ct Green Tourmaline, Emerald Cut, VVS-VS

16.9 x 3.2 mm

$ 24.36

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1.13ct Green Tourmaline, Emerald Cut, VS

16.9 x 3 mm

$ 27.24

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0.95ct Multicolor Opal, Round, Translucent

7 mm (calibrated)

$ 17.67

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0.74ct Green Tourmaline, Emerald Cut, VVS-VS

4.9 x 4.8 mm

$ 36.85

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5.49ct Multicolor Opal Triplet, Fancy, Opaque

18.9 x 11.8 mm

$ 136.70

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2.66ct Pink Tourmaline, Emerald Cut, VVS-VS

9.9 x 6.4 mm

$ 201.08

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0.78ct Green Tourmaline, Emerald Cut, VS

7 x 4.1 mm

$ 19.42

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0.98ct Green Tourmaline, Emerald Cut, VVS-VS

11.9 x 3.2 mm

$ 48.80

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2.91ct Multicolor Black Opal, Round, Opaque

11 mm (calibrated)

$ 73.52

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25.47ct Multicolor Black Opal, Oval, Opaque

25 x 18 mm (calibrated)

$ 1,273.50

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2.85ct Multicolor Opal Triplet, Oval, Opaque

12 x 10 mm (calibrated)

$ 70.97

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1.35ct Pink Tourmaline, Emerald Cut, VS

7.6 x 4.8 mm

$ 97.62

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18.90ct Green Opal, Oval, Opaque

18.9 x 15.8 mm

$ 40.48

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1.47ct Green Tourmaline, Oval, VS

7.3 x 6 mm

$ 170.81

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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

Very pleasant

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

My current project is something BLUE . Opal earrings with matching tennis bracelet for her wedding. The opals and sixty two sapphires VVS & VS are AMAZINGLY BEAUTIFUL. The private jewelers were impressed by the clarity and inclusion free of the sapphires . I want to say thank you for the High quality sapphires that I purchased for my daughtera's wedding.

Posted By My real name Dean or Wandering about in May, 2026
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Overall Rating -> 9 star ratings

The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.

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

Recomendado Totalmente Los Productos Se Entregaron A Tiempo

Posted By Alexis in May, 2026
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Overall Rating -> 10 star ratings

Excellent options

Posted By CJ in February, 2026
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Posted By Becky in October, 2025
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