“6.2 x 5.3 x 4.2 cm. A rarely seen example of the compacted variety of muscovite called gilbertite (formerly its own species) associated with beautiful little blue tabular hexagonal gemmy crystals of apatite on a blocky pinkish-beige colored orthoclase. Ex Kay Robertson Collection (#4743). Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record and the 50+ page article in the German Magazine "Mineralien-Welt" November-December 2017). ”

“6.2 x 5.3 x 4.2 cm. A rarely seen example of the compacted variety of muscovite called gilbertite (formerly its own species) associated with beautiful little blue tabular hexagonal gemmy crystals of apatite on a blocky pinkish-beige colored orthoclase. Ex Kay Robertson Collection (#4743). Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record and the 50+ page article in the German Magazine "Mineralien-Welt" November-December 2017). ”

“6.2 x 5.3 x 4.2 cm. A rarely seen example of the compacted variety of muscovite called gilbertite (formerly its own species) associated with beautiful little blue tabular hexagonal gemmy crystals of apatite on a blocky pinkish-beige colored orthoclase. Ex Kay Robertson Collection (#4743). Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record and the 50+ page article in the German Magazine "Mineralien-Welt" November-December 2017). ”

“6.2 x 5.3 x 4.2 cm. A rarely seen example of the compacted variety of muscovite called gilbertite (formerly its own species) associated with beautiful little blue tabular hexagonal gemmy crystals of apatite on a blocky pinkish-beige colored orthoclase. Ex Kay Robertson Collection (#4743). Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record and the 50+ page article in the German Magazine "Mineralien-Welt" November-December 2017). ”

“6.2 x 5.3 x 4.2 cm. A rarely seen example of the compacted variety of muscovite called gilbertite (formerly its own species) associated with beautiful little blue tabular hexagonal gemmy crystals of apatite on a blocky pinkish-beige colored orthoclase. Ex Kay Robertson Collection (#4743). Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record and the 50+ page article in the German Magazine "Mineralien-Welt" November-December 2017). ”

“6.2 x 5.3 x 4.2 cm. A rarely seen example of the compacted variety of muscovite called gilbertite (formerly its own species) associated with beautiful little blue tabular hexagonal gemmy crystals of apatite on a blocky pinkish-beige colored orthoclase. Ex Kay Robertson Collection (#4743). Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record and the 50+ page article in the German Magazine "Mineralien-Welt" November-December 2017). ”

“6.2 x 5.3 x 4.2 cm. A rarely seen example of the compacted variety of muscovite called gilbertite (formerly its own species) associated with beautiful little blue tabular hexagonal gemmy crystals of apatite on a blocky pinkish-beige colored orthoclase. Ex Kay Robertson Collection (#4743). Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record and the 50+ page article in the German Magazine "Mineralien-Welt" November-December 2017). ”

“6.2 x 5.3 x 4.2 cm. A rarely seen example of the compacted variety of muscovite called gilbertite (formerly its own species) associated with beautiful little blue tabular hexagonal gemmy crystals of apatite on a blocky pinkish-beige colored orthoclase. Ex Kay Robertson Collection (#4743). Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record and the 50+ page article in the German Magazine "Mineralien-Welt" November-December 2017). ”

“6.2 x 5.3 x 4.2 cm. A rarely seen example of the compacted variety of muscovite called gilbertite (formerly its own species) associated with beautiful little blue tabular hexagonal gemmy crystals of apatite on a blocky pinkish-beige colored orthoclase. Ex Kay Robertson Collection (#4743). Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record and the 50+ page article in the German Magazine "Mineralien-Welt" November-December 2017). ”