Tourmaline Cabochon 20.10 ct | 20 x 15 mm Oval | Forest Green | Minas Gerais, Brazil

SKU: TOS260 Category: Tag:

Natural Forest Green Tourmaline Cabochon (20.10 ct) from Minas Gerais, Brazil, cut as an impressive 20 x 15 mm oval with deep rich color and smooth luminous character. A remarkable gemstone for an important statement ring, pendant, or a fine collection of exceptional cabochon tourmalines.

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Description

This 20.10 ct Tourmaline Cabochon from Minas Gerais, Brazil combines impressive size, an elegant 20 x 15 mm oval shape, and a rich forest green color. Its generous proportions, softly polished surface, and strong natural presence make it especially appealing for important bespoke jewelry as well as for collectors who appreciate exceptional cabochon tourmalines with individuality.

Forest green tourmaline is admired for its deep, natural elegance and refined visual strength. The color feels rich and substantial without appearing overly dark, offering a sophisticated green tone that works beautifully in both classic and contemporary jewelry. In cabochon form, this forest green color often appears especially smooth and even, while the domed polished surface creates a gentle glow rather than the sharper reflections of a faceted gemstone.

The oval cabochon cut enhances the stone’s timeless and versatile appeal. Its softly elongated outline gives the gem balance, elegance, and strong visual presence, making it particularly well suited for statement rings, substantial pendants, and one-of-a-kind custom jewelry where color, shape, and a softer optical character should remain the main focus. With dimensions of 20 x 15 mm, the stone has excellent presence and strong design potential for high-quality creations.

At 20.10 ct, this tourmaline offers substantial visual impact and clear collector appeal while remaining highly suitable for important jewelry pieces. Originating from Minas Gerais, Brazil, one of the world’s most important gemstone regions, it combines attractive provenance with refined cabochon cutting and a rich forest green color of lasting appeal.

A beautiful oval tourmaline cabochon from Brazil with deep forest green color, smooth luster, and excellent potential for statement jewelry or a refined gemstone collection.

Additional Information

Certification Options

Every gemstone purchased from Gem Fountain includes a free Gem Fountain Gemstone Report, provided as a PDF file, documenting the key characteristics and authenticity of the stone.

For customers who require independent laboratory verification, we offer the option to add third-party gemstone reports. Upon selection, the gemstone will be submitted to the chosen accredited gemological laboratory. Estimated fees and processing times are as follows:

  • BGL – Brief Report: USD 19
    Processing time: approximately 1–2 business days
  • AIG – Brief Report: USD 38
    Processing time: approximately 7–8 business days
  • LOTUS – Soft Cover Report: USD 128
    Processing time: approximately 7–8 business days

All external reports are optional and can be selected as an add-on prior to shipment. Processing times may vary slightly depending on laboratory workload.

Shipping & Payment

All gemstones are shipped directly from Thailand, one of the world’s leading gemstone trading hubs. We deliver to almost all countries worldwide, using reliable and insured shipping partners to ensure safe and secure delivery. Each order is carefully packaged, and tracking details are provided once the shipment has been dispatched. Delivery times may vary depending on destination and local customs procedures. Any applicable duties, taxes, or import fees are the responsibility of the recipient.

We offer flexible payment options to accommodate our international clientele. Most common payment methods are accepted at checkout. Customers who choose to pay via wire transfer (Wise) receive a 5% discount, which can be selected directly during the checkout process.

Specification

Overview
Total Carat20.10 ct / 1 pcs
Region / MineMinas Gerais
Country of OriginBrazil
Saturation / ToneDeep
ShadeForest
ColorGreen
TransperencyTransparent
Stone TypeType l
ClarityMI
Dimensions 1 (L/W/H)20.00 x 15.00 x 8.40 mm
Untreated

No indication of artificial enhancement.

Read more about common gemstone treatments →
Refractive Index nω = 1.633–1.651 & nε = 1.615–1.630
Birefringence 0.018 – 0.021
Hardness (Mohs) 7.0 - 7.5
Gravity 3.00 - 3.10
Crystal System Trigonal
Chemical Formular Aluminium borosilicates – solid solution crystals with variable composition, Fe²⁺, Li)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄, Mn, Na(Mg