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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
Cabochons
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7.30ct Green Opal, Oval, Opaque

18.6 x 9.3 mm

$ 16.94

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1.35ct Multicolor Black Opal, Oval, Translucent

11 x 9 mm (calibrated)

$ 28.01

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1.79ctw Multicolor Opal, Oval, Opaque

8 x 6 mm (calibrated)

$ 58.83

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41.95ct Black Tourmaline, Emerald Cut, Opaque

25.4 x 16.9 mm

$ 208.91

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2.91ctw Multicolor Black Opal, Oval, Opaque

9 x 7 mm (calibrated)

$ 95.65

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1.06ct Pink Tourmaline, Round, Transparent

6 mm (calibrated)

$ 17.57

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1.18ct Green Tourmaline, Baguette, VVS

7.8 x 4.2 mm

$ 41.13

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2.32ct Multicolor Opal, Oval, Transparent

11.8 x 8.8 mm

$ 103.98

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1.54ct Pink Tourmaline, Oval, VVS-VS

8 x 6.8 mm

$ 178.95

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20.13ct Multicolor Boulder Opal, Fancy, Opaque

28.4 x 17.1 mm

$ 110.27

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13.46ct Multicolor Boulder Opal, Cushion, Opaque

14.7 x 12.1 mm

$ 73.74

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1.40ct Multicolor Black Opal, Oval, Opaque

9.9 x 7.6 mm

$ 34.86

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1.26ct Green Tourmaline, Emerald Cut, VS

18.9 x 2.9 mm

$ 26.38

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1.67ct Pink Tourmaline, Emerald Cut, VS

8.4 x 5.3 mm

$ 120.76

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9.04ct Black Tourmaline, Cushion, Opaque

12.7 x 11.4 mm

$ 45.02

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6.25ct Multicolor Opal Triplet, Fancy, Opaque

16.9 x 13.2 mm

$ 155.63

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8.99ct Black Tourmaline, Oval, Opaque

14 x 12 mm (calibrated)

$ 44.77

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1.59ct Pink Tourmaline, Oval, VS

7.6 x 6.4 mm

$ 237.55

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1.96ct Multicolor Opal, Fancy, Translucent

12.7 x 6.3 mm

$ 54.66

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1.33ct Green Tourmaline, Oval, VS-SI

7.2 x 6.4 mm

$ 154.55

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16.25ct Multicolor Boulder Opal, Fancy, Opaque

29.7 x 15 mm

$ 80.93

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1.49ct Pink Tourmaline, Round, VS

6.5 mm (calibrated)

$ 207.77

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2.31ctw Multicolor Opal Doublet, Oval, Opaque

9 x 7 mm (calibrated)

$ 68.62

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1.40ct Green Tourmaline, Oval, VVS-VS

6.8 x 6 mm

$ 162.68

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 -> 10 star ratings

Absolutely love Gem Select. I always know the quality and accuracy of information and photos are top notch. Highly recommend!

Posted By Matthew K. in May, 2026
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Overall Rating -> 10 star ratings

This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.

Posted By PickyShopper in April, 2026
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Overall Rating -> 10 star ratings

Found a rock that met my need. Bought it!

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

Very good.

Posted By Tommy in December, 2025
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Overall Rating -> 10 star ratings

All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.

Posted By Bob D in December, 2025
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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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