Natural Bicolor Tourmaline Cushion Cut 6.90 Carats: Untreated Afghan Loose Gemstone
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Product Description
This natural bicolor tourmaline from Afghanistan is a cushion cut gemstone weighing 6.90 carats. It shows two colors in one stone, and the cushion cut makes the color zoning easy to see. Tourmaline is known for its vibrant hues, and a large bicolor stone like this stands out to collectors and jewelry designers. It is untreated and ready for a custom ring, pendant or statement piece. Browse more in our natural tourmaline collection.
Natural Bicolor Tourmaline Specifications
| Gemstone | Natural Bicolor Tourmaline |
| Carat Weight | 6.90 Carats |
| Dimensions | 10.33 × 9.26 × 8.44 mm |
| Shape / Cut | Cushion Cut |
| Color | Bicolor (natural dual-tone) |
| Clarity | SI (Slightly Included) |
| Treatment | None (Natural & Untreated) |
| Origin | Afghanistan |
| Form | Loose Gemstone |
Wondering how 10.33 mm will look in a setting? See our guide on carat vs millimeters.
Advantages of This Bicolor Tourmaline
Natural Color Zoning
The bicolor effect is entirely natural. It gives a contrast that is both calm and dynamic, and no two bicolor tourmalines are alike, so every stone is one of a kind.
Cushion Cut Brilliance
The cushion cut brings out luster and shows the color transition clearly. It has a vintage-inspired look with a modern feel.
Large, Collector-Friendly Size
At 6.90 carats, this stone has real presence and works as a centerpiece. Natural bicolor tourmaline in larger sizes is sought after by collectors.
Durable for Regular Wear
Tourmaline has a hardness of 7 to 7.5 on the Mohs scale, so it suits regular wear when properly set.
Color Versatility
It works with warm and cool metals, including yellow gold, white gold, rose gold and platinum.
Bicolor Tourmaline Jewelry Uses
Fine Jewelry Design
The stone suits statement rings, pendants and bracelet centerpieces. Its size and color gradation work well for bespoke and luxury jewelry. Browse our handmade jewelry for ideas, or contact our team about a custom design.
Engagement Rings and Anniversary Gifts
Bicolor tourmaline is a colorful alternative to diamond or sapphire. Its two tones make it a fitting symbol of unity and partnership. If you are planning a ring set, see our gems for ring set.
Collectors
Collectors value this stone for its natural coloration and uniqueness.
Custom Designer Pieces
The natural color zoning gives a distinctive, artistic look for avant-garde and couture designs.
Symbolic and Metaphysical Properties
Bicolor tourmaline is traditionally believed to balance the energies of the heart and mind. It is also linked with creativity, emotional healing and clarity of thought. (Folklore-based; not a medical claim.)
About Onestep Gems
Onestep Gems is a gemstone supplier based in Peshawar, Pakistan, with a UK-registered entity. We offer natural gemstones for collectors and jewelry designers in the USA and worldwide. Learn more about us, browse all our loose gemstones, or see our tourmaline lots if you need several stones.
Bicolor Tourmaline FAQs
Is this bicolor tourmaline natural?
Yes. This is a natural, untreated bicolor tourmaline from Afghanistan, and the color zoning is entirely natural.
What does bicolor mean?
A bicolor tourmaline shows two distinct colors within one crystal. The cutter orients the stone to show the zoning as well as possible.
Is this stone suitable for rings?
Yes. With a hardness of 7 to 7.5, it suits rings when set in a protective setting such as a bezel or halo.
What does SI clarity mean?
SI means slightly included. Small inclusions may be visible under magnification and are typical of natural tourmaline in this size.
What metals pair best with bicolor tourmaline?
It pairs well with yellow gold, white gold, rose gold and platinum.
How big is a 6.90 carat tourmaline?
This stone measures 10.33 × 9.26 × 8.44 mm, which is a substantial size for a statement ring or pendant.
Does Onestep Gems ship to the USA?
Yes. We ship worldwide, including to the USA. See our shipping policy and refund policy.
Can I ask questions before buying?
Yes. Reach us through the contact page or at info@onestepgems.com.
Buy Natural Bicolor Tourmaline Online
Add a one-of-a-kind dual-tone gemstone to your collection or your next custom piece. This natural bicolor tourmaline, cushion cut, 6.90 carats, is available now from Onestep Gems. Shop more in our tourmaline collection.
Shipping
Most of the time we are use FedEx Express for our worldwide shipments. it may take 8 to 10 days to deliver for international shipments. Once you placed an order on our website we will provide you the tracking number of the parcel which you can track it. We also have another option of Global Shipping which is normally taking around a month to deliver the parcel. Another option for international shipments is ThaiPost.
Refund and Returns
We have a 14-day return policy, which means you have 14 days after receiving your item to request a return.
Customer will pay for returning an item(s).
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at info@onestepgems.com. Please note that returns will need to be sent to the following address: Office # 05, Nasrullah Building Shah Qabool, Namak Mandi, Peshawar 25000, Pakistan
If your return is accepted, we’ll send you instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at info@onestepgems.com.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
Exchanges
We do offer exchanging of items, once you return an item and we received it, then we can discuss exchange with another item. Upon agreeing with exchange we can adjust the price for the item we are going to exchange.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 5 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at info@onestepgems.com
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