small stone calcite

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  • Concretion - Wikipedia

    A concretion is a hard, compact mass of matter formed by the precipitation of mineral cement within the spaces between particles, and is found in sedimentary rock or soil. Concretions are often ovoid or spherical in shape, although irregular shapes also occur. The word 'concretion' is derived from the Latin con meaning 'together' and crescere meaning 'to grow'.

  • Vine 1 Light Mini Pendant | Kalco

    1577 – Stone, 1209 – Ecru, 1219 – White Alabaster, 1255 – Small Piastra, 1265 – Large Piastra, 1289 – Tall Faux Marble, 1305 – Smoked Taupe, 1313 – Gold Streaked Amber, 1318 – Antique Linen, 1339 – Amber Tulip, 1350 – Waterfall, 1355 – Petite Victorian, 1356 – Travertine, 1365 – .

  • 'Magic' Viking Sunstone Just Natural Crystal | Live Science

    The researchers, lead by Guy Ropars of the University of Rennes in France, build their own Viking sunstone compass from a calcite crystal. The two beams of light can be seen on the reflective ...