Rare rastsvetaevite eudialyte

Short description: Rare collectible gemstone sphere made of rock formation with Rastsvetaevite (purple).
Rastsvetaevite is a rare mineral of the eudialyte group. Its structure is modular. The mineral is named after crystallographer Ramiza K. Rastsvetaeva.
Rastsvetaevite was originally found in hyperagpaitic (ultra-alkaline) pegmatite at Mt. Rasvumchorr, Khibiny massif, Kola Peninsula. Associated minerals are aegirine, nacaphite, nepheline, natroliite, schcherbakovite, sodalite, villiaumite and rasvumite.
Base mineral: Rastsvetaevite
Detailed Composition: Rastsvetaevite, Aegirine, Nacaphite, Nepheline, Natrolite, Schcherbakovite, Sodalite, Villiaumite, Rasvumite.
Locality: 372 grams / 13.11 oz.
Diameter: 63 mm (2.60 inch)
Weight: 372 g (13,12 oz)