Natural crystal boulder opal 13.1 ct round cabochon isolated image showing fine green and gold sparkles across the stone.
Natural crystal boulder opal 13.1 ct round cabochon held in fingers showing a glitter look with green and gold color play.
Natural crystal boulder opal 13.1 ct round held in fingers showing gold and green sparkles across the face.
Natural crystal boulder opal 13.1 ct round held in fingers showing size with bright green fire and rainbow color play.
Natural crystal boulder opal 13.1 ct round on a hand showing size and bright green fire with rainbow sparkles.
Side view of natural crystal boulder opal 13.1 ct round cabochon showing a low dome and rainbow sparkles along the edge.
Back view of natural crystal boulder opal 13.1 ct round showing the base and a smooth polished back.
Natural crystal boulder opal 13.1 ct round close view showing strong green fire with orange and yellow flashes.
Round Crystal Boulder Opal 13.1 ct

13.1ct Natural Crystal Boulder Opal Stunning Fiery Play-of-Color

This 13.1ct Natural Crystal Boulder Opal from Winton, Australia features a mesmerizing fiery multicolor play-of-color with vibrant flashes of orange, green, and gold. Its round cut enhances the brilliance, making it an ideal choice for custom jewelry designs. Ethically sourced and untreated, this opal is a unique, one-of-a-kind gemstone perfect for collectors and jewelry makers.

Features & Benefits:

100% Natural Pipe Crystal Boulder Opal Ethically sourced from Winton, Australia.
Fiery Multicolor Play-of-Color Stunning orange, green, and gold flashes.
Round Cut Perfect for high-end custom jewelry settings.
Perfect Size 13.1ct, ideal for statement rings or pendants.
October Birthstone A meaningful gift for loved ones.

Registered Shipping $15 under $200
Free Registered Shipping over $201
Free Worldwide EMS Express Shipping over $1000
Free Worldwide FedEx Shipping over $4000
Extra Cost $25 EMS Shipping Upgrade under $200
Extra Cost $10 EMS Shipping Upgrade under $999
Extra Cost $80 FedEx Shipping Upgrade under $3999

All shipping includes complimentary insurance.
Please view ourย Shipping Policyย page for more information.

7 day return and refund policy.
Please view ourย Return and Refundย page for more information.

We offer a lifetime guarantee for natural cracks that may form in our opals.
There is a very low chance that this can happen, however occasionally it might.
Our guarantee excludes any opals sold with existing fractures.
Please view our Terms and Conditions.

Caring for Your Australian Opal

Opal Jewelry

Important: Opals Are Fragile Gemstones
Opals are softer than sapphires, rubies, or diamonds and will crack or chip if struck hard against solid surfaces.

Always remove opal jewelry before:
Sports or physical activities
Manual labor, gardening, or gym workouts
Household tasks where impact is possible (lifting, moving furniture, etc.)

Even a minor knock during everyday wear can cause permanent damage. Treat opals as delicate gemstones, not everyday workwear.

Cleaning Your Opal

Clean with warm water and mild soap. Avoid harsh chemicals like bleach, ammonia, or chlorine. Light exposure to hand soap or dishwashing detergent is safe.

Storage

Store opal jewelry separately from harder gemstones (diamonds, sapphires) to prevent scratching.

Solid Natural Opals

(Black, Boulder, Crystal, White Opal)
Natural solid opals are stable and won't change color or crack from water, humidity, or temperature changes. They are safe to submerge in water and can be worn daily, provided they are protected from physical impact. Solid opals are a single piece of gemstone with no artificial backing, making them ideal for heirloom quality jewelry when handled with care.

Opal Doublets

Opal doublets consist of a thin slice of natural opal bonded to a dark backing. Do not submerge doublets in water as prolonged exposure can weaken the adhesive bond and cause separation or cloudiness. Remove doublet jewelry before swimming, bathing, or washing dishes. Clean with a damp cloth only; do not soak or use ultrasonic cleaners.

Like all opals, doublets are fragile and must be protected from impact.

Not sure which type you have? Solid opals show natural color throughout the stone. Doublets have a visible dark backing layer when viewed from the side.

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13.1ct Natural Crystal Boulder Opal Round

AU$2,811

In stock

Details

Dimension:

18ร—18ร—7 mm

Weight:

13.1ct

Type:

Natural Solid Untreated Crystalย Boulderย Opal

Source:

Winton, QLD, Australia

Sku:

PP92

13.1ct Natural Crystal Boulder Opal Stunning Fiery Play-of-Color

This 13.1ct Natural Crystal Boulder Opal from Winton, Australia features a mesmerizing fiery multicolor play-of-color with vibrant flashes of orange, green, and gold. Its round cut enhances the brilliance, making it an ideal choice for custom jewelry designs. Ethically sourced and untreated, this opal is a unique, one-of-a-kind gemstone perfect for collectors and jewelry makers.

Features & Benefits:

100% Natural Pipe Crystal Boulder Opal Ethically sourced from Winton, Australia.
Fiery Multicolor Play-of-Color Stunning orange, green, and gold flashes.
Round Cut Perfect for high-end custom jewelry settings.
Perfect Size 13.1ct, ideal for statement rings or pendants.
October Birthstone A meaningful gift for loved ones.

Registered Shipping $15 under $200
Free Registered Shipping over $201
Free Worldwide EMS Express Shipping over $1000
Free Worldwide FedEx Shipping over $4000
Extra Cost $25 EMS Shipping Upgrade under $200
Extra Cost $10 EMS Shipping Upgrade under $999
Extra Cost $80 FedEx Shipping Upgrade under $3999

All shipping includes complimentary insurance.
Please view ourย Shipping Policyย page for more information.

7 day return and refund policy.
Please view ourย Return and Refundย page for more information.

We offer a lifetime guarantee for natural cracks that may form in our opals. There is a very low chance that this can happen, however occasionally it might. Our guarantee excludes any opals sold with existing fractures.
Please view our Terms and Conditions.

Caring for Your Australian Opal

Opal Jewelry

Important: Opals Are Fragile Gemstones
Opals are softer than sapphires, rubies, or diamonds and will crack or chip if struck hard against solid surfaces.

Always remove opal jewelry before:
Sports or physical activities
Manual labor, gardening, or gym workouts
Household tasks where impact is possible (lifting, moving furniture, etc.)

Even a minor knock during everyday wear can cause permanent damage. Treat opals as delicate gemstones, not everyday workwear.

Cleaning Your Opal

Clean with warm water and mild soap. Avoid harsh chemicals like bleach, ammonia, or chlorine. Light exposure to hand soap or dishwashing detergent is safe.

Storage

Store opal jewelry separately from harder gemstones (diamonds, sapphires) to prevent scratching.

Solid Natural Opals

(Black, Boulder, Crystal, White Opal)
Natural solid opals are stable and won't change color or crack from water, humidity, or temperature changes. They are safe to submerge in water and can be worn daily, provided they are protected from physical impact. Solid opals are a single piece of gemstone with no artificial backing, making them ideal for heirloom quality jewelry when handled with care.

Opal Doublets

Opal doublets consist of a thin slice of natural opal bonded to a dark backing. Do not submerge doublets in water as prolonged exposure can weaken the adhesive bond and cause separation or cloudiness. Remove doublet jewelry before swimming, bathing, or washing dishes. Clean with a damp cloth only; do not soak or use ultrasonic cleaners.

Like all opals, doublets are fragile and must be protected from impact.

Not sure which type you have? Solid opals show natural color throughout the stone. Doublets have a visible dark backing layer when viewed from the side.

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