Showing 1–12 of 35 results

Tourmaline

Tourmaline 2.77 ct | Oval | Lime Green | Rubaya, Congo

In stock

$229.00
SKU: TOS214
Stone(s)
Total weight2.77 ct / 1 pcs
Region / MineRubaya
Country of OriginCongo
TreatmentUntreated
Stone TypeType I
TransperencyTransparent
ClarityEC
Saturation / ToneLight
ShadeLime
ColorGreen
Shape(s)Oval
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)9.00 x 7.60 x 5.50 mm
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
Gemstone Seletion

Tourmaline 3.04 ct | Cushion | Mint Green | Rubaya, Congo

In stock

$547.00
SKU: TOS192
Stone(s)
Total weight3.04 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)10.80 x 7.10 x 5.20 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

Tourmaline 3.06 ct | Cushion | Lime Green | Rubaya, Congo

In stock

$275.00
SKU: TOS212
Stone(s)
Total weight3.06 ct / 1 pcs
Region / MineRubaya
Country of OriginCongo
TreatmentUntreated
Stone TypeType I
TransperencyTransparent
ClarityEC
Saturation / ToneMedium
ShadeLime
ColorGreen
Shape(s)Cushion
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)10.00 x 6.50 x 5.60 mm
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
Gemstone Seletion

Tourmaline 3.70 ct | Octagon | Lime Green | Rubaya, Congo

In stock

$555.00
SKU: TOS213
Stone(s)
Total weight3.70 ct / 1 pcs
Region / MineRubaya
Country of OriginCongo
TreatmentUntreated
Stone TypeType I
TransperencyTransparent
ClarityEC
Saturation / ToneMedium
ShadeLime
ColorGreen
Shape(s)Octagon
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)12.40 x 7.10 x 5.60 mm
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
Gemstone Seletion

Tourmaline 4.24 ct | Cushion | Mint Green | Rubaya, Congo

In stock

$763.00
SKU: TOS194
Stone(s)
Total weight4.24 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)11.30 x 7.70 x 5.50 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

Tourmaline 4.25 ct | Oval | Lime Green | Rubaya, Congo

In stock

$446.00
SKU: TOS211
Stone(s)
Total weight4.25 ct / 1 pcs
Region / MineRubaya
Country of OriginCongo
TreatmentUntreated
Stone TypeType I
TransperencyTransparent
ClarityEC
Saturation / ToneLight
ShadeLime
ColorGreen
Shape(s)Oval
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)10.20 x 8.60 x 6.30 mm
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
Gemstone Seletion

Tourmaline 5.91 ct | Cushion | Mint Green | Rubaya, Congo

In stock

$1,065.00
SKU: TOS191
Stone(s)
Total weight5.91 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)13.50 x 9.70 x 5.90 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

Tourmaline 10.93 ct | Octagon | Rose Pink | Minas Gerais, Brazil

In stock

$2,295.00
SKU: TOS226
Stone(s)
Total weight10.93 ct / 1 pcs
Region / MineMinas Gerais
Country of OriginBrazil
TreatmentUntreated
Stone TypeType I
TransperencyTransparent
ClarityEC
Saturation / ToneRich
ShadeRosé
ColorPink
Shape(s)Octagon
Cutting StyleEmerald Cut
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)14.50 x 11.10 x 8.10 mm
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
Gemstone Seletion

Tourmaline 12.15 ct | Oval | Peach Pink | Ibity, Madagascar

In stock

$1,094.00
SKU: TOS217
Stone(s)
Total weight12.15 ct / 1 pcs
Country of OriginMadagascar
TreatmentUntreated
Stone TypeType I
TransperencyTransparent
ClarityMI
Saturation / ToneLight
ShadeViolet
ColorRed
Shape(s)Oval
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)17.10 x 13.40 x 7.90 mm
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
Gemstone Seletion
Region / MineIbity

Tourmaline 2.94 ct | Octagon | Bluish Green | Kunar, Afghanistan

In stock

$706.00
SKU: TOS209
Stone(s)
Total weight2.94 ct / 1 pcs
Region / MineKunar
Country of OriginAfghanistan
TreatmentUntreated
Stone TypeType I
TransperencyTransparent
ClarityEC
Saturation / ToneRich
ShadeBluish
ColorGreen
Shape(s)Octagon
Cutting StyleEmerald Cut
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)10.60 x 6.60 x 4.90 mm
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
Gemstone Seletion

Tourmaline 3.08 ct | Cushion | Bluish Green | Kunar, Afghanistan

In stock

$739.00
SKU: TOS208
Stone(s)
Total weight3.08 ct / 1 pcs
Region / MineKunar
Country of OriginAfghanistan
TreatmentUntreated
Stone TypeType I
TransperencyTransparent
ClarityEC
Saturation / ToneRich
ShadeBluish
ColorGreen
Shape(s)Cushion
Cutting StyleBaguette
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)9.70 x 7.00 x 5.40 mm
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
Gemstone Seletion

Tourmaline 3.43 ct | Oval | Lime Green | Rubaya, Congo

In stock

$309.00
SKU: TOS215
Stone(s)
Total weight3.43 ct / 1 pcs
Region / MineRubaya
Country of OriginCongo
TreatmentUntreated
Stone TypeType I
TransperencyTransparent
ClarityEC
Saturation / ToneLight
ShadeLime
ColorGreen
Shape(s)Oval
Cutting StyleFaceted
Cut CrownBrilliant Cut
Cut PavilionStep Cut
Dimensions 1 (L/W/H)9.60 x 8.40 x 6.20 mm
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
Gemstone Seletion