Doubly-terminated, stacked cluster of smoky Herkimer Quartz crystals from Herkimer County, New York. This aesthetic specimen, translucent to transparent 3d diamond shaped clusters, is in pristine condition. This piece has great transparency with minor inclusions and the crystal faces have a brilliant glassy luster. 1.66 lbs, 5.5'' x 4.75'' x 1.25''...

From Rio Grande du Sol, Brazil   Large aesthetic elliptical formation of lustrous pale lavender to purple amethyst crystals also known as an "Amethyst Flower" on matrix. Unusual trigonal habit with parallel growth, fully crystallized on all sides.   5 lbs, 9'' x 6.5'' x 3.5''

Massive agate slice with translucent blue and colorless completely wrapping around a crystallized quartz center beside a beautiful botryoidal formation.   11.5 lbs, 19 x 18 x .75 inches

AAA Top-quality Brazilian Amethyst clustered geode.  This specimen is lined with large lustrous crystallized gems -  transparent to translucent amethyst variety quartz crystals - with deep grape purple color and highly reflective terminated faces. The strong healing energy of Amethyst can transmute lower vibrations to higher frequencies, transforming negative energy...

AAA-quality, perfectly cut cross-section of a Brazilian Amethyst geode.  This piece is completely lined with lustrous transparent grape-purple Amethyst crystals with phantom zoning and has a large Calcite section present. This complete slice is polished on both sides. Weight:  22.5 lbs Dimensions: 16.5 x 13 x 2.5 inches

AAA Quality, fully-terminated Optical Calcite crystal from Guangxi, China. This Chinese specimen is  water-clear, gem-transparent with goethite inclusions. Almost flawless minus a few inclusions, crystal has bright brilliant luster, shines as if it were polished.   37.6g , 2.25'' x 1''

AAA Top Quality natural formation of gem amethyst variety quartz cluster with lustrous fully terminated crystals with highly reflective faces, deep transparent to translucent grape color and a polished banded agate outer rim.   6 x 6 x 4 inches, 6 lbs

AAA Quality, fully-terminated Optical Calcite crystal. This Chinese specimen is  water-clear, gem-transparent with goethite inclusions. Almost flawless minus a few inclusions, crystal has bright brilliant luster, shines as if it were polished. 58g , 1.75'' x 1.25''