Tourmaline 4.39 ct | Cushion | Mint Green | Rubaya, Congo

SKU: TOS193

Vibrant Mint Green Tourmaline 4.39 ct from the Congo, cut as an elegant elongated cushion with excellent brilliance. The stone is distinctly pleochroic, showing two attractive tones: a bluish-green core with yellowish-green edges, creating lively depth and movement. Expertly precision-finished by our in-house cutter for a bright, refined sparkle.

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$790.00

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1 in stock

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Description

This exceptional 4.39 ct Mint Green Tourmaline from the Congo stands out for its fresh, energetic color and its elegant elongated cushion shape. Tourmaline is famous for its pleochroism, and this gem displays it beautifully—adding depth, character, and a premium “alive” look in different lighting and viewing angles.

Lively mint color with natural two-tone character (pleochroism)

The gemstone shows a striking, elegant color interplay:

  • Bluish green in the center of the stone

  • Yellowish green along the edges

This subtle two-tone effect is not a flaw—it’s a natural optical feature of tourmaline and one of the reasons collectors and designers love the gem. It gives the stone a dynamic appearance, with color shifting and depth as the gem moves.

Elongated cushion — modern and refined

The long cushion outline is both timeless and contemporary: soft corners, a graceful silhouette, and a flattering shape for rings and pendants. It offers a sophisticated alternative to standard ovals while keeping a classic, elegant feel.

Precision cutting for full brilliance

This tourmaline was refined and perfected by our in-house cutter, with careful attention to symmetry, proportions, and light performance. The result is a bright, lively gem that returns light beautifully, enhancing both the mint color and the pleochroic two-tone effect.

Ideal for standout jewelry

A mint tourmaline of this size and character is perfect for:

  • elegant statement rings

  • refined pendants

  • bespoke designs that highlight fresh green color

A vivid, pleochroic mint-green tourmaline with expert cutting—full of life, color depth, and brilliance.

Specification

Overview

Stone(s)
Total weight4.39 ct / 1 pcs
Country of OriginCongo
TreatmentUntreated
ClarityEC
Saturation / ToneRich
ShadeMint
ColorGreen
Shape(s)Cushion
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)11.00 x 9.20 x 6.30 mm
Gemstone Seletion
Stone TypeType I
TransperencyTransparent
HTS-Code7103.99.0000
Refractive Indexnω = 1.633–1.651 & nε = 1.615–1.630
Birefringence0.018 – 0.021
Hardness (Mohs)7.0 – 7.5
Gravity3.00 – 3.10
Crystal SystemTrigonal
Chemical FormularAluminium borosilicates – solid solution crystals with variable composition, Fe²⁺, Li)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄, Mn, Na(Mg
Region / MineRubaya

Processor

Stone(s)
Total weight4.39 ct / 1 pcs
Country of OriginCongo
TreatmentUntreated
ClarityEC
Saturation / ToneRich
ShadeMint
ColorGreen
Shape(s)Cushion
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)11.00 x 9.20 x 6.30 mm
Gemstone Seletion
Stone TypeType I
TransperencyTransparent
HTS-Code7103.99.0000
Refractive Indexnω = 1.633–1.651 & nε = 1.615–1.630
Birefringence0.018 – 0.021
Hardness (Mohs)7.0 – 7.5
Gravity3.00 – 3.10
Crystal SystemTrigonal
Chemical FormularAluminium borosilicates – solid solution crystals with variable composition, Fe²⁺, Li)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄, Mn, Na(Mg
Region / MineRubaya

Display

Stone(s)
Total weight4.39 ct / 1 pcs
Country of OriginCongo
TreatmentUntreated
ClarityEC
Saturation / ToneRich
ShadeMint
ColorGreen
Shape(s)Cushion
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)11.00 x 9.20 x 6.30 mm
Gemstone Seletion
Stone TypeType I
TransperencyTransparent
HTS-Code7103.99.0000
Refractive Indexnω = 1.633–1.651 & nε = 1.615–1.630
Birefringence0.018 – 0.021
Hardness (Mohs)7.0 – 7.5
Gravity3.00 – 3.10
Crystal SystemTrigonal
Chemical FormularAluminium borosilicates – solid solution crystals with variable composition, Fe²⁺, Li)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄, Mn, Na(Mg
Region / MineRubaya

RAM

Stone(s)
Total weight4.39 ct / 1 pcs
Country of OriginCongo
TreatmentUntreated
ClarityEC
Saturation / ToneRich
ShadeMint
ColorGreen
Shape(s)Cushion
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)11.00 x 9.20 x 6.30 mm
Gemstone Seletion
Stone TypeType I
TransperencyTransparent
HTS-Code7103.99.0000
Refractive Indexnω = 1.633–1.651 & nε = 1.615–1.630
Birefringence0.018 – 0.021
Hardness (Mohs)7.0 – 7.5
Gravity3.00 – 3.10
Crystal SystemTrigonal
Chemical FormularAluminium borosilicates – solid solution crystals with variable composition, Fe²⁺, Li)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄, Mn, Na(Mg
Region / MineRubaya

Storage

Stone(s)
Total weight4.39 ct / 1 pcs
Country of OriginCongo
TreatmentUntreated
ClarityEC
Saturation / ToneRich
ShadeMint
ColorGreen
Shape(s)Cushion
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)11.00 x 9.20 x 6.30 mm
Gemstone Seletion
Stone TypeType I
TransperencyTransparent
HTS-Code7103.99.0000
Refractive Indexnω = 1.633–1.651 & nε = 1.615–1.630
Birefringence0.018 – 0.021
Hardness (Mohs)7.0 – 7.5
Gravity3.00 – 3.10
Crystal SystemTrigonal
Chemical FormularAluminium borosilicates – solid solution crystals with variable composition, Fe²⁺, Li)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄, Mn, Na(Mg
Region / MineRubaya

Video Card

Stone(s)
Total weight4.39 ct / 1 pcs
Country of OriginCongo
TreatmentUntreated
ClarityEC
Saturation / ToneRich
ShadeMint
ColorGreen
Shape(s)Cushion
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)11.00 x 9.20 x 6.30 mm
Gemstone Seletion
Stone TypeType I
TransperencyTransparent
HTS-Code7103.99.0000
Refractive Indexnω = 1.633–1.651 & nε = 1.615–1.630
Birefringence0.018 – 0.021
Hardness (Mohs)7.0 – 7.5
Gravity3.00 – 3.10
Crystal SystemTrigonal
Chemical FormularAluminium borosilicates – solid solution crystals with variable composition, Fe²⁺, Li)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄, Mn, Na(Mg
Region / MineRubaya

Connectivity

Stone(s)
Total weight4.39 ct / 1 pcs
Country of OriginCongo
TreatmentUntreated
ClarityEC
Saturation / ToneRich
ShadeMint
ColorGreen
Shape(s)Cushion
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)11.00 x 9.20 x 6.30 mm
Gemstone Seletion
Stone TypeType I
TransperencyTransparent
HTS-Code7103.99.0000
Refractive Indexnω = 1.633–1.651 & nε = 1.615–1.630
Birefringence0.018 – 0.021
Hardness (Mohs)7.0 – 7.5
Gravity3.00 – 3.10
Crystal SystemTrigonal
Chemical FormularAluminium borosilicates – solid solution crystals with variable composition, Fe²⁺, Li)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄, Mn, Na(Mg
Region / MineRubaya

Features

Stone(s)
Total weight4.39 ct / 1 pcs
Country of OriginCongo
TreatmentUntreated
ClarityEC
Saturation / ToneRich
ShadeMint
ColorGreen
Shape(s)Cushion
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)11.00 x 9.20 x 6.30 mm
Gemstone Seletion
Stone TypeType I
TransperencyTransparent
HTS-Code7103.99.0000
Refractive Indexnω = 1.633–1.651 & nε = 1.615–1.630
Birefringence0.018 – 0.021
Hardness (Mohs)7.0 – 7.5
Gravity3.00 – 3.10
Crystal SystemTrigonal
Chemical FormularAluminium borosilicates – solid solution crystals with variable composition, Fe²⁺, Li)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄, Mn, Na(Mg
Region / MineRubaya

Battery

Stone(s)
Total weight4.39 ct / 1 pcs
Country of OriginCongo
TreatmentUntreated
ClarityEC
Saturation / ToneRich
ShadeMint
ColorGreen
Shape(s)Cushion
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)11.00 x 9.20 x 6.30 mm
Gemstone Seletion
Stone TypeType I
TransperencyTransparent
HTS-Code7103.99.0000
Refractive Indexnω = 1.633–1.651 & nε = 1.615–1.630
Birefringence0.018 – 0.021
Hardness (Mohs)7.0 – 7.5
Gravity3.00 – 3.10
Crystal SystemTrigonal
Chemical FormularAluminium borosilicates – solid solution crystals with variable composition, Fe²⁺, Li)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄, Mn, Na(Mg
Region / MineRubaya

General

Stone(s)
Total weight4.39 ct / 1 pcs
Country of OriginCongo
TreatmentUntreated
ClarityEC
Saturation / ToneRich
ShadeMint
ColorGreen
Shape(s)Cushion
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)11.00 x 9.20 x 6.30 mm
Gemstone Seletion
Stone TypeType I
TransperencyTransparent
HTS-Code7103.99.0000
Refractive Indexnω = 1.633–1.651 & nε = 1.615–1.630
Birefringence0.018 – 0.021
Hardness (Mohs)7.0 – 7.5
Gravity3.00 – 3.10
Crystal SystemTrigonal
Chemical FormularAluminium borosilicates – solid solution crystals with variable composition, Fe²⁺, Li)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄, Mn, Na(Mg
Region / MineRubaya

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