Mineral: Londonite
Locality: Ambatomigaby pegmatite, Ampanivana, Andrembesoa, Betafo District, Vakinankaratra Region, Madagascar
Dimensions: 5.5 x 5 x 3 cm / main crystal: 3.7 cm

Description: Mass: 85 g MIM number: 1568 Probable year of extraction : 2001 Group of translucent olive green crystals; on of them is a perfect octahedron, the other an elongated octahedron and the third one a perfect spinel-type twin which is very uncommon for this species. Photographer: AINU / Augustin de Valence Publication: "extraLapis No. 53: Zwillinge"

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