Esther's photos with the keyword: gem

Not every rock is createad equal

Not every rock is createad equal

Esther
23 Aug 2015 5 7 371
Cooling lava may form pockets due to air bubbles or decomposing material. Ground water or rain water then seeps in, depositing its mineral rich contents which form crystals. This geode contains amethyst crystals, a semi-precious form of quartz. Not the Sunday Challenge: stones AMG 8394
Rhodochrosite on quartz

Rhodochrosite on quartz

Esther
22 Jul 2015 12 16 379
Harvard Museum of Natural History - Rhodochrosite on quartz AIMG 7939
Giant gem

Giant gem

Esther
26 Jul 2013 3 2 273
Opal is the national gemstone of Australia, which mines 97% of the world's opal. This is a particularly large and colorful stone. AIMG 7729