Madagascar

The Archean crystalline area in Madagascar is rich in granite pegmatites and is a traditional supplier of gem beryl, tourmaline, and, to a lesser degree, topaz and kunzite to world markets. The delicate peach-pink colour of morganite is especially highly prized and is considered as the best in the world.

The Madagascar pegmatites are subdivided into the rare-metal pegmatites, muscovite-beryl pegmatites with niobo-tantalites; sodium-lithium pegmatites with spodumene, amblygonite, and lepidolite; and rare-earth pegmatites (including rare earth-uranium and monazite), which are distributed in more or less isolated pegmatite fields (Beus and Gerasimovsky, 1983)

Gem beryl and other gemstones are mined mainly from miarolitic pegmatites on the High Plateau north and southwest of the town of Antananarivo in the central part of the island.

Very high quality aquamarines are found among the Madagascar stones. They are transparent with a wide range of colours from bluish green to azurite and deep dark blue to almost black. Pleochroism can be very strong and, as in cordierite, changes from dark blue to pale blue and almost colourless. Density is 2.73 - 2.77 g/cm³. Thin channels parallel to the long axis of the crystal, which create a "rain effect", are rather typical.

Ref: E.Ya. Kievlenko, Geology of gems, 2003, p. 110 - 112

Gemstone List

Gem list contains entries from all listed localities in region.

Gemstones from Madagascar by Colour

Click on a photo for more information.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Localities in this Region

Madagascar
Madagascar
  • Fianarantsoa Province
    Madagascar
  • Haute Matsiatra
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    • Ambohimahasoa
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      • Fiadanana
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  • Haute Matsiatra
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    • Ikalamavony
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      • Fitampito
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  • Haute Matsiatra
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    • Ikalamavony
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      • Ikalamavony Commune
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  • Haute Matsiatra
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    • Vohibato
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  • Ihorombe
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    • Ihosy
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      • Ilakaka
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  • Ihorombe
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    • Ihosy
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      • Mahasoa
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  • Ihorombe
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    • Ihosy
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  • Ihorombe
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    • Ihosy
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      • Sakalalina
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  • Ihorombe
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    • Ihosy
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      • Zazafotsy
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  • Sava
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    • Andapa District
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  • Sava
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    • Andapa District
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      • Andapa Pegmatite Field
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  • Sava
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    • Vohémar District
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  • Sava
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    • Vohémar District
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      • Andravory Pegmatite field
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  • Sofia
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    • Analalava
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      • Ambolobozo
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  • Sofia
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  • Vakinankaratra
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    • Antsirabe II
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      • Ambohitsimanova
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  • Vakinankaratra
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    • Antsirabe II
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  • Vakinankaratra
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    • Antsirabe II
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      • Ibity
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  • Vakinankaratra
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    • Antsirabe II
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      • Mangarano
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  • Vakinankaratra
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    • Antsirabe II
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      • Sahanivotry Manandona
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  • Vakinankaratra
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    • Betafo
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      • Ambohimanambola
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  • Vakinankaratra
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    • Betafo
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      • Andrembesoa
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  • Vakinankaratra
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    • Betafo
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  • Vakinankaratra
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    • Betafo
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      • Mahaiza
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  • Vakinankaratra
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    • Mandoto
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      • Anjoma Ramartina
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  • Vatovavy Fitovinany
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    • Mananjary
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      • Ambalahosy Nord
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  • Vatovavy Fitovinany
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    • Mananjary
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      • Ambalahosy Nord
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  • Vatovavy Fitovinany
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    • Mananjary
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      • Ambalahosy Nord
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  • Vatovavy Fitovinany
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    • Mananjary
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      • Andonabe
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  • Vatovavy Fitovinany
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    • Mananjary
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      • Andonabe
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  • Vatovavy Fitovinany
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    • Mananjary
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      • Antsenavolo
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  • Vatovavy Fitovinany
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    • Mananjary
      Warning: Cannot assign an empty string to a string offset in /home/mindat/gemdat/include.php on line 860
  • Vorondolo pegmatite district
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