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Current Bid
4
Bids
15/01/2026 11:51 am

Natural 5.40 Ct Bi Color Tourmaline Top quality

4 bids
68 views
10 watching
Details
SKU
Whosama
Dimensions (mm)
9.4 x 8.5 x 7.5mm
Weight (cts)
5.4
Treatment
No Treatment
Shape
Emerald, Square
Type
Faceted
Clarity
VVS
Colours
Description

Key Features of a Top-Quality Bi-Color Tourmaline (5.40 ct)

1. Carat Weight

  • 5.40 ct is considered a large size for tourmaline, especially if it’s high quality.

  • Larger bi-color tourmalines are much rarer and more valuable.

2. Bi-Color

  • Bi-color” tourmaline typically features two distinct colors within a single crystal—common combinations include:

    • Pink and green (e.g., watermelon tourmaline)

    • Blue and green

    • Red and yellow

  • The value increases if the color transition is sharp and natural (not blended or muddy).

3. Quality Grading

Top-quality tourmaline would exhibit:

  • Excellent clarity (eye-clean or near flawless)

  • Vivid, saturated colors

  • Natural origin (not treated or enhanced)

  • Expert cut that maximizes brilliance and shows off both colors distinctly

4. Shape and Cut

  • Common cuts: Emerald, shapes that highlight the bi-color zoning.

  • Precision cutting enhances the contrast between the two colors.

5. Origin

  • Premium bi-color tourmalines often come from:

    • Afghanistan

Shipping
Shipping provider Shipping to Thailand Shipping to rest of world Combined Shipping (Thailand) Combined Shipping (rest of the world)
Standard Shipping - Tracked
/ 10 days
/ 21 days
Not available
on orders with 2 items or more
FedEx
/ 7 days
/ 14 days
Not available
on orders with 2 items or more
Standard Shipping - Untracked
/ 0 days
/ 40 days
Not available
on orders with 3 items or more
UPS
/ 0 days
/ 14 days
Not available
on orders with 3 items or more
Store
Natural 5.40 Ct Bi Color Tourmaline Top quality
Bangkok, Thailand
Owned by siamgem
Recent Feedback
  • haiderm
    haiderm
    Positive

    Delivered timely and as described. Very pleased with my order. Thank you very much, I look forward to doing business with you in the future. Thanks Again

  • fiore
    fiore
    Positive

    Confermo zircone di alta qualità grazie

  • frogpogs
    frogpogs
    Positive

    Item arrived well packaged and timely. As advertised

Bids History (4)
benfield
benfield
4 hours ago
jzman
jzman
4 hours ago
Automatic Bid
jzman
jzman
12 hours ago
mitra123
mitra123
16 hours ago
Purchased from this seller previously

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Audit

The Gemstone Sheriff program allows our members to request an audit on any product, which is completed by an independent Gemologist who assesses the accuracy of the item description and pictures.

Shipping Details

Costs:
Transit:
21 days via Standard Shipping - Tracked
Ships from:
Thailand

Payment Options

  • paypal
This seller adds 10.00% tax to transactions in Thailand.

Overview

Listing Type : Premium
Product ID : 3069780
Starting Bid :
Starts : 8th January 2026 11:51 am PST
Ends : 15th January 2026 11:51 am PST
* All prices are in USD

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