Showing all 9 results

Grandidierite

Grandidierite Gemstone 2.49ct Madagascar

514.55$
SKU: AK04629
Colours

All Colours, Bluish-green

Origin

All Origins, Madagascar

Shapes

All Shapes, Oval

Weight

2 – 2.99 ct, All Weight

Gem Type

All Cut Gems, Faceted

Grandidierite Gemstone 3.09ct Madagascar

450.74$
SKU: AK04628
Colours

All Colours, Bluish-green

Origin

All Origins, Madagascar

Shapes

All Shapes, Oval

Weight

3 – 3.99 ct, All Weight

Gem Type

All Cut Gems, Faceted

Grandidierite Gemstone 4.30ct Madagascar

627.24$
SKU: AK04626
Colours

All Colours, Bluish-green

Origin

All Origins, Madagascar

Shapes

All Shapes, Oval

Weight

4 – 4.99 ct, All Weight

Gem Type

All Cut Gems, Faceted

Grandidierite Gemstone 6.37ct Madagascar

1,006.62$
SKU: AK04621
Colours

All Colours, Bluish-green

Origin

All Origins, Madagascar

Shapes

All Shapes, Oval

Weight

6 – 6.99 ct, All Weight

Gem Type

All Cut Gems, Faceted

Grandidierite Gemstone 3.64ct Madagascar

530.97$
SKU: AK04627
Colours

All Colours, Bluish-green

Origin

All Origins, Madagascar

Shapes

All Shapes, Oval

Weight

3 – 3.99 ct, All Weight

Gem Type

All Cut Gems, Faceted

Grandidierite Gemstone 4.62ct Madagascar

673.92$
SKU: AK04625
Colours

All Colours, Bluish-green

Origin

All Origins, Madagascar

Shapes

All Shapes, Oval

Weight

4 – 4.99 ct, All Weight

Gem Type

All Cut Gems, Faceted

Grandidierite Gemstone 5.17ct Madagascar

754.15$
SKU: AK04624
Colours

All Colours, Bluish-green

Origin

All Origins, Madagascar

Shapes

All Shapes, Oval

Weight

5 – 5.99 ct, All Weight

Gem Type

All Cut Gems, Faceted

Grandidierite Gemstone 6.29ct Madagascar

1,146.90$
SKU: AK04622
Colours

All Colours, Bluish-green

Origin

All Origins, Madagascar

Shapes

All Shapes, Oval

Weight

6 – 6.99 ct, All Weight

Gem Type

All Cut Gems, Faceted

Grandidierite Gemstone 5.80ct Madagascar

1,057.55$
SKU: AK04623
Colours

All Colours, Bluish-green

Origin

All Origins, Madagascar

Shapes

All Shapes, Oval

Weight

5 – 5.99 ct, All Weight

Gem Type

All Cut Gems, Faceted

Grandidierite:

Grandidierite is the One the Most expensive and rare gemstone in the world, and it is one the rarest top 10 gemstone Types in the world, Grandidierite It forms in the orthorhombic crystal system; it is typically bluish-green in colour and distinctive colour from traces of iron. Grandidierite is the most favourite gemstone for gem collectors and love to add their collection, but it has been almost difficult to find, Grandidierite is an extremely unusual mineral and gem by having a breathtaking colour that is blue-green. Although it is very rarely transparent, faceted, translucent gems have actually a colour that is beautiful. The type locality and many wells understood location is Andrahomana, southwest of Fort Dauphin, southern Madagascar. Other sources that are minor Kachenbere Hills, Malawi; Béjaia, Algeria; Ontario, Canada; Warren County, NY, USA; Tuscany, Italy; Masataka, Surinam; Cuvier Island, brand new Zealand and Norway.
PROPERTIES OF GRANDIDIERITE
Chemical Composition: (Mg,Fe2+)Al3(BO3)(SiO4)O2

(Magnesium Iron Aluminum Boro-Silicate)

Hardness: 7.5Moh

Specific Gravity (Density): 2.98 – 2.99 (g/cm3)

Refractive Index: 1.590 – 1.639 Biaxial ( – )(DR)

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