Jasper is a form of chalcedony

it measures 28x18x17 mm

This nice crusted part slice specimen will be a prized item in your collection

formerly called Iceland crystal (Icelandic: silfurberg [ˈsɪlvʏrˌpɛrk]

Tourmalinated Quartz | Square Cut | 17mm 19.7ct | Brazil Orthoclase Jasper is a form ofProduct Type: Tourmalinated Quartz Approx Weight (per piece): 19. 7ct Size: 17mm Shape: Square Cut Color: Colorless Clarity: Tourmalinated Clear Origin: Brazil Treatment: Natural No known treatment The appearance of Tourmalinated Quartz is characterized by clear or milky quartz with dark, thread like, or needle shaped inclusions of black tourmaline running through the stone. These inclusions can vary in density, giving each piece a distinct and unique