8.30ct ETW Earth-Mined Bluish Green Grandidierite – Octagon Cut, Unheated

8.30ct ETW Earth-Mined Bluish Green Grandidierite – Octagon Cut, Unheated

This distinctive 8.30-carat earth-mined bluish green grandidierite from Madagascar features attractive blue-green coloration and an elegant octagon cut. Its substantial size, opaque clarity, and uncommon gemstone variety make it an appealing choice for collectors or custom statement jewelry.

Specifications:

Gemstone: Bluish Green Grandidierite
Carat Weight: 8.30ct ETW
Cut: Octagon Cut
Dimensions: 15.3 x 10.0 x 6.0 mm
Clarity: Opaque
Treatment: Unheated
Origin: Madagascar
Condition: New

Earth-mined bluish green grandidierite weighing 8.30ct ETW in an octagon cut from Madagascar, featuring opaque clarity and unheated character.

This grandidierite displays distinctive bluish green coloration in an elongated octagon shape. Its opaque appearance emphasizes its natural body color and unique mineral character rather than transparency or faceted brilliance.

Grandidierite is a rare magnesium aluminum borosilicate mineral first discovered in Madagascar in 1902. Named after French naturalist Alfred Grandidier, it is particularly recognized for its characteristic blue-green coloration and rarity in transparent gem-quality form.

Madagascar remains an important source of grandidierite and is internationally recognized for its remarkable gemstone diversity.

At 8.30 carats and measuring 15.3 x 10.0 x 6.0 mm, this gemstone offers impressive proportions for a custom statement pendant or collector's display. Its elongated octagon cut provides a refined geometric appearance.

With a Mohs hardness of approximately 7 to 7.5, grandidierite offers reasonable resistance to scratching with appropriate care. Protective settings and careful handling are recommended.

This individual Madagascan grandidierite combines substantial size, distinctive bluish green coloration, and the collectible appeal of an uncommon natural gemstone.

(Stock Code: ABMM)

Keywords: loose gemstone, earth-mined grandidierite, bluish green grandidierite, Madagascar grandidierite, Madagascar gemstone, octagon cut grandidierite, opaque grandidierite, unheated grandidierite, 8.30ct grandidierite, rare gemstone, natural mineral gemstone, collector gemstone, statement pendant gemstone