Sanidine
sold- Locality
- Itrongay, Betroka, Anosy Region, Madagascar
- Minerals
- Sanidine
- Dimensions
- 3 x 2.2 x 1.4 cm
- Size class
- Thumbnail
- SID
- M844
Felspar is a mineral not ususally known for fine collector gem crystals, but at this locality in Madagascar, amazing water clear crystals are sometimes found. This is a double-terminated crystal in excellent condition, crystallized on all sides. The crystal has a good yellow coloration and is internally transparent. The faces alternate from smooth and glassy to a curvy surface texture that is common to these and always reminds me of a topographic map. Weighs 20.2 grams.