Tourmaline Layout 20.33 ct | Oval Cabochon | Various Green | Minas Gerais, Brazil

SKU: TOL017 Category: Tag: Est. Retail Value: USD $750

Natural Tourmaline Layout (20.33 ct total) from Minas Gerais, Brazil, featuring elegant oval cabochons in various green shades with smooth luminous character. A versatile layout for custom rings, pendants, earrings, or coordinated jewelry designs with fresh natural color and refined individuality.

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Description

This 20.33 ct Tourmaline Layout from Minas Gerais, Brazil presents a harmonious selection of oval cabochons in various green shades. The combination of matching shape, soft cabochon finish, and natural color variation gives this layout a distinctive and highly versatile character, making it especially appealing for bespoke jewelry and coordinated multi-stone designs.

Green tourmaline is admired for its lively and elegant natural character, and a layout showing different green tones offers even greater design interest. The range of green hues can create depth, contrast, and a more organic overall look, while still maintaining a harmonious visual impression. In cabochon form, these colors often appear especially smooth and rich, and the polished domed surfaces give the stones a gentle glow rather than the brighter reflections of faceted gems.

As a layout, this group offers excellent design flexibility. Matching oval cabochons are particularly well suited for rings, pendants, earrings, and coordinated jewelry sets where consistency of shape is important, while the variation in green tones adds individuality and visual movement. Such a layout can be used for elegant suites, nature-inspired creations, or custom designs that highlight the beauty of subtle color differences within the same gem family.

Originating from Minas Gerais, Brazil, one of the world’s most important gemstone regions, this tourmaline layout combines attractive provenance with strong jewelry potential and appealing natural color diversity. A refined selection of green tourmaline oval cabochons for jewelers, designers, and collectors seeking versatile gemstone material for elegant custom jewelry.

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 Carat20.33 ct / 3 pcs
Region / MineMinas Gerais
Country of OriginBrazil
Saturation / ToneMedium
ShadeVarious
ColorGreen
TransperencyTransparent
Stone TypeType I
ClarityMI
Dimensions 1 (L/W/H)smallest = 11.8 x 9.8 mm
Dimension 2 (L/W/H)Biggest = 13.8 x 9.6 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