5.71 carats natural lagoon tourmaline cushion cut gemstone from 
Natural lagoon tourmaline 5.71 carat cushion cut gemstone
Large lagoon tourmaline from AfghanistanAfghanistan
Lagoon Tourmaline gemstone
Lagoon Tourmaline jewelry
Lagoon Tourmaline gift
High quality bluish green lagoon tourmaline loose gemstone 5.71 carats
Natural Afghan lagoon tourmaline with cushion cut and VVS clarity
Lagoon Tourmaline ring
Lagoon Tourmaline pendant
Natural Afghan lagoon tourmaline with cushion cut and VVS clarity
Premium 5.71 carats lagoon tourmaline for custom jewelry
Cushion cut bluish green tourmaline gemstone from OneStep Gems
Rare Afghan lagoon tourmaline gemstone with vibrant blue green color
Fine natural lagoon tourmaline suitable for rings and pendants
Luxury cushion cut lagoon tourmaline loose gemstone 5.71 carats

Natural Lagoon Tourmaline 5.71 Carat Cushion Cut Loose Gemstone from Afghanistan

Regular price $1,500.00
Sale price $1,500.00 Regular price $1,700.00
Save 11%

Tax included. Shipping calculated at checkout.

Specification

Vender:

Onestepgems

SKU:

T42-571

Availability:

In Stock

Product Type:

Loose Gemstone

Only 1 items left in stock

Free Shipping

On orders over $100

Certificate

Authenticity guaranteed

Easy Returns

30-day return policy

Description
Shipping & Returns
Reviews

Product Description

Natural Lagoon Tourmaline 5.71 Carat | Cushion Cut Loose Gemstone from Afghanistan

Overview

This 5.71-carat Natural Lagoon Tourmaline shows a bluish-green color inspired by clear tropical water, in a classic cushion cut that adds brilliance and depth. Sourced from Afghanistan and fully untreated, its VVS clarity and size make it a strong centerpiece for luxury jewelry and collections. Explore more rare color varieties in our full Tourmaline Gemstone Collection.

Specifications

Specification Detail
Gemstone Type Lagoon Tourmaline
Color Bluish-Green
Weight 5.71 Carats
Dimensions 10.10 x 9.36 x 7.85 mm
Clarity VVS (Very Very Slightly Included)
Cut Cushion Cut
Treatment None (100% Natural)
Origin Afghanistan

Why This Tourmaline Stands Out

  • Lagoon blue-green color: a vivid blend of blue and green with an ocean-inspired look
  • Cushion cut: rounded corners and larger facets maximize light and color depth
  • VVS clarity, untreated: strong transparency with full authenticity
  • Larger size: at 5.71 carats, a bolder choice than our smaller lagoon stones

Want a different size? Browse our 1.90 Ct or 1.55 Ct Lagoon Tourmaline, Cushion Cut, or see our lagoon pairs. Love the color? Read Mermaid Core Jewelry: The Blue-Green Gemstone Trend Taking Over 2026. New to loose gemstones? Our guide on how to design custom jewelry with a loose gemstone explains what happens next.

Jewelry Uses

Ideal for statement and cocktail rings, luxury pendants, designer earrings, bespoke necklaces, and heirloom pieces. It suits both modern and vintage-inspired settings, and works well as a gift for birthdays, engagements, and anniversaries.

Symbolism

Lagoon tourmaline is traditionally associated with emotional balance, creativity, and positive energy, and is linked in crystal traditions to the heart chakra. (Folklore-based; not a medical claim.)

Why Onestep Gems

Every listing states treatment, clarity, origin, and millimeter dimensions. Orders over $120 ship free, with a 14-day exchange guarantee.

FAQs

Is this lagoon tourmaline natural?
Yes. It is 100% natural and untreated.

Where does it come from?
Afghanistan, a respected source of fine tourmaline.

What makes lagoon tourmaline special?
Its blend of blue and green is less common than single-color tourmaline, and natural stones in this color are limited.

Is cushion cut good for jewelry?
Yes. It gives strong brilliance and a timeless shape.

Can it be used in an engagement ring?
Yes. Tourmaline rates 7 to 7.5 on the Mohs scale, so it suits custom rings in a secure setting.

How should I clean it?
Use mild soap, warm water, and a soft brush. Avoid harsh chemicals and ultrasonic cleaners.

Care Instructions

  • Clean with mild soap and lukewarm water, using a soft cloth or brush
  • Avoid harsh chemicals and ultrasonic cleaners
  • Store separately from harder gemstones, and remove jewelry during strenuous activities

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

Top Picks

Customer favorites chosen for brilliance, clarity, and value

Regular price $150.00
Sale price $150.00 Regular price $200.00
Bluish green
Bluish green
Regular price $2,900.00
Sale price $2,900.00 Regular price $3,200.00
lagoon
lagoon
Regular price $300.00
Sale price $300.00 Regular price $400.00
lagoon
lagoon
Regular price $850.00
Sale price $850.00 Regular price $1,000.00
Bluish green
Bluish green