ER92AM1: Group of Fluorapatite crystals with a short prismatic habit, extraordinarily transparent, with good luster and a somewhat bluish green color, with geometric zoning, on a Quartz crystal matrix with flattened Ferberite crystals and lenticular Siderite crystals. This is an old piece, as one no longer sees Fluorapatite pieces with this color and transparency.
The specimen has been reviewed, photographed and published in the Russian magazine ‘Mineral Observer’ on page 84 in the volume 26/2021, number 1, and in the magazine ‘Paragénesis’, number 02/2021, page 102
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 14.5 × 10.7 × 7.8 cm = 5.71” × 4.21” × 3.07”

Main crystal size: 1.5 × 1.1 cm = 0.59” × 0.43”