Grandidierite stone meaning - Grandidierite gemstone price

Grandidierite stone meaning and price.

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Grandidierite name

Named after French naturalist Alfred Grandidier (1836–1912), The stone is an extremely rare orthorhombic Mg-Fe aluminous borosilicate with the formula (Mg,Fe)Al3(BO3)(SiO4)O2 (Lacroix, 1902, 1922a,b).

The material was first discovered at the cliffs of Andrahomana, on the southern coast of Madagascar. Grandidierite is a bluish green to greenish blue mineral, the blue component increases with Fe content. It is transparent to translucent with a first pale yellow to colorless, also a greenish blue, and another blue trichroism.

The larger elongate euhedral orthorhombic crystals may measure up to 8 cm. It s often strongly corroded.

Since its initial discovery, samples have been found in only a few locations around the world, including Malawi, Namibia and Sri Lanka. But the few gem quality specimens have come mainly from Madagascar.

Grandidierite gemstone Identification

first of all, grandidierite is a magnesium aluminum borosilicate; it has also a hardness of 7 to 7.5 on the Mohs scale, similarly to garnet; while a density of 2.85 to 3.00, in the approximate range of tourmaline; and finally, a refractive index of 1.590-1.623

Crystal system: Orthorhombic
Luster: Vitreous, Pearly
Transparency: Transparent, Translucent
Comment: Somewhat pearly on cleavage
Colour: Bluish green, greenish blue
Comment: Increasingly greener with greater Fe content, also colourless to blue or green in thin section
Hardness (Mohs): 7½
Cleavage: Perfect
Density: 2.98 – 2.99


While a new deposit was discovered in 2014, about 15 km from the village of Tranomaro. Likewise the area is located in the Amboasary district of southern Madagascar’s Anosy region, 60 km northwest of Cape Andrahomana. first of all, access from Tolanaro is via a 60 km paved road west to Amboasary Atsimo.

Then followed by a rough, unpaved 50 km road north to Tranomaro requires a four-wheel-drive vehicle. Final access from the village of Tranomaro to the deposit is half a day by foot only. Security is a problem because bandits operate throughout the region.

Grandidierite meaning and healing properties benefits

The following section is pseudo scientific and based on cultural beliefs.

Admired for its beauty, the stone also possesses significant metaphysical properties. According to yogic philosophy, this color of the gemstone is known to relate to the throat chakra. It helps to improve one’s communication, expression, and intuition. It is also associated with faith, trust, patience, and respect.

Strongly resonates within the higher heart chakra. It is a fairly uncommon stone that may encourage you to live life from a heart based perspective. The vibration of these green stones is known to assist you with decision making.

Grandidierite under microscope


What is grandidierite price?

Grandidierite stone price: A very rare gem that can fetch up to $20,000 per carat for the best gemstone quality.

Why is grandidierite so expensive?

High quality is extremely rare. Even when gem quality material is produced, it’s often translucent, and is thereby cut into cabochons ranging in size from about 1 carat to 10 carats and up. Given its rarity, fine gems can demand significant prices.

How do I identify my grandidierite stone?

The stone display strong trichroic pleochroism. That means they can show three different colors depending on the viewing angle: dark blue-green, colorless or sometimes very light yellow, or dark green.

What is grandidierite gemstone used for?

The stone has the meaning and properties to purify body energy. It is a gemstone to cleanse negative energy accumulated unconsciously. It will help to alleviate the daily stress. It also relieves negative feelings such as anxiety, fear, sadness and anger.

Natural grandidierite for sale in our gem shop

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