large Manganoan Calcite & Calcite (RARE Swiss find !) Lockhart Coll.

Item Description

An EXTREMELY RARE and impressive large manganoan calcite and calcite combination specimen from one end of the famous St Gotthard pass road tunnel! Several larger light pastel-pink translucent manganoan calcite rhombohedrons with satin lustre faces are dramatically set along the crest of the sculptural and aesthetic mounded specimen. The impressive large dominating central rhomb is 5.3 x 5.2 cm. The Mn-calcites rest upon a striking dense cluster of intergrown calcite crystals on the typical banded gneiss matrix. In great shape overall, for the exceptional rarity of the piece. The lower periphery wear to the calcites and the upper left cleaved face of the large Mn-calcite (barely noticeable in the display view) are noted, but certainly have very minimal impact to the very high quality of this exceptional large rarity. Hot pink fluorescence. Ex Brent Lockhart Swiss Collection. A MUST for the Swiss or species collector! Valued at...well, it's hard to say. Few have been for sale. $2500-plus seems reasonable.