Scalenohedral calcite and quartz crystals (from Bulgaria) Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/scalenohedral-calcite-and-quartz-crystals-from-bulgaria-image336088827.html
RM2AEP4MB–Scalenohedral calcite and quartz crystals (from Bulgaria)
Star of Lanka Blue Sapphire (Al2O3) Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/star-of-lanka-blue-sapphire-al2o3-image403378538.html
RM2EC7DCA–Star of Lanka Blue Sapphire (Al2O3)
A rough uncut blue Sapphire with some alluvial deposit on it from North Carolina USA. Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/a-rough-uncut-blue-sapphire-with-some-alluvial-deposit-on-it-from-north-carolina-usa-image477971673.html
RF2JNHDMW–A rough uncut blue Sapphire with some alluvial deposit on it from North Carolina USA.
A large piece of raw golden Calcite stone Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/a-large-piece-of-raw-golden-calcite-stone-image419659883.html
RF2FAN4CY–A large piece of raw golden Calcite stone
Elements of mineralogy, crystallography and blowpipe analysis from a practical standpoint .. . JkJ in Fig. 138, there is shown also the unit pyramid p, and a thirdorder pyramid v, {^a : ^ a : a: 3c). HEXAGONAL SYSTEM. 39 SCALENOHEDRAL CLASS. 31. No. 13. Rhombohedral Heraihedry, LieUsch. No. 19. Rhombohedral Group, Dana. This is by far the most important group in the hexagonal sys-tem, and-includes the crystals of such minerals as calcite, corun-dum, hematite and chabazite. Symmetry of the Class. Fig. 139 shows the three planes of symmetry at sixty degreeswith the three axes diagonal to these Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/elements-of-mineralogy-crystallography-and-blowpipe-analysis-from-a-practical-standpoint-jkj-in-fig-138-there-is-shown-also-the-unit-pyramid-p-and-a-thirdorder-pyramid-v-a-a-a-3c-hexagonal-system-39-scalenohedral-class-31-no-13-rhombohedral-heraihedry-lieusch-no-19-rhombohedral-group-dana-this-is-by-far-the-most-important-group-in-the-hexagonal-sys-tem-and-includes-the-crystals-of-such-minerals-as-calcite-corun-dum-hematite-and-chabazite-symmetry-of-the-class-fig-139-shows-the-three-planes-of-symmetry-at-sixty-degreeswith-the-three-axes-diagonal-to-these-image338481195.html
RM2AJK463–Elements of mineralogy, crystallography and blowpipe analysis from a practical standpoint .. . JkJ in Fig. 138, there is shown also the unit pyramid p, and a thirdorder pyramid v, {^a : ^ a : a: 3c). HEXAGONAL SYSTEM. 39 SCALENOHEDRAL CLASS. 31. No. 13. Rhombohedral Heraihedry, LieUsch. No. 19. Rhombohedral Group, Dana. This is by far the most important group in the hexagonal sys-tem, and-includes the crystals of such minerals as calcite, corun-dum, hematite and chabazite. Symmetry of the Class. Fig. 139 shows the three planes of symmetry at sixty degreeswith the three axes diagonal to these
Rare high quality eudialyte mineral palm stone from Russia, isolated on white background Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/stock-photo-rare-high-quality-eudialyte-mineral-palm-stone-from-russia-isolated-175337746.html
RFM5792A–Rare high quality eudialyte mineral palm stone from Russia, isolated on white background
Scalenohedral calcite and quartz crystals (from Bulgaria) Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/scalenohedral-calcite-and-quartz-crystals-from-bulgaria-image336098686.html
RM2AEPH8E–Scalenohedral calcite and quartz crystals (from Bulgaria)
Scalenohedral calcite and quartz crystals (from Bulgaria) Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/scalenohedral-calcite-and-quartz-crystals-from-bulgaria-image543773931.html
RM2PGK15F–Scalenohedral calcite and quartz crystals (from Bulgaria)
Woman's hand holding rare high quality eudialyte mineral palm stone from Russia, isolated on white background Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/stock-photo-womans-hand-holding-rare-high-quality-eudialyte-mineral-palm-stone-175337771.html
RFM57937–Woman's hand holding rare high quality eudialyte mineral palm stone from Russia, isolated on white background
Scalenohedral calcite and quartz crystals (from Bulgaria) Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/scalenohedral-calcite-and-quartz-crystals-from-bulgaria-image543773925.html
RM2PGK159–Scalenohedral calcite and quartz crystals (from Bulgaria)
Scalenohedral calcite and quartz crystals (from Bulgaria) Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/scalenohedral-calcite-and-quartz-crystals-from-bulgaria-image336088829.html
RM2AEP4MD–Scalenohedral calcite and quartz crystals (from Bulgaria)
Rare high quality eudialyte mineral palm stone from Russia, isolated on white background Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/stock-photo-rare-high-quality-eudialyte-mineral-palm-stone-from-russia-isolated-175337723.html
RFM5791F–Rare high quality eudialyte mineral palm stone from Russia, isolated on white background
White Calcite - Calcium Carbonate (CaCO3) Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/white-calcite-calcium-carbonate-caco3-image336191456.html