Gem Silica (Quartz / Chalcedony with Chrysocolla inclusions) Prehnite This material

This material

so it should be kept out of the light if possible

Several slender finger-shaped casts of Prehnite after Anhydrite in parallel growth make this an attractive large miniature / small cabinet display specimen

This attractive display piece features a few sharp lustrous

This piece has some of the largest individual crystals of Wavellite that I have seen from Bolivia

Gem Silica (Quartz / Chalcedony with Chrysocolla inclusions) Prehnite This materialThe Lily Mine has been a source of some beautiful rough Quartz Opal Chalcedony material that has been the focus of many faceters and lapidaries over the last 20+ years. A friend of ours brought this one back from Peru and we had to snag it as the patterning was too good to pass up. This material is often sold as Gem Silica which is essentially Quartz (or in this case Chalcedony) which has inclusions of the copper silicate Chrysocolla. What's most