Iris Quartz (Anandalite) Geode
Approx. Dimensions: 5.5 x 4 x 3.5 inches
Approx. Weight: 982 grams
Locality: India
Acrylic display stand and putty not included. Acrylic displays in a variety of sizes can be purchased separately.
Quartz crystals displaying internal spectral colours under minor rhombohedral faces. This interference phenomenon is due to reflection and refraction on extremely thin parallel Brazil-law twinning lamellae or periodic etching of defects on z faces, resulting in a diffraction grating (Lin & Heaney, 2017). The quartz crystals themselves are generally colourless or faintly amethystine or citrine, and almost always from vugs in basalt or other trap rock. (Mindat.org)
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Returns are accepted within 14 days of delivery. Items must be returned in new/unused/undamaged condition to receive a full refund. Please contact us if you need to return an item.
