Balas diamondsWe recently reported on the rare polycrystalline black diamonds found in Brazil and Af
Balas diamondsWe recently reported on the rare polycrystalline black diamonds found in Brazil and Africa (http://on.fb.me/1OnMTBU), noting that their origin remains a mystery. These spherical diamonds are also made of many tiny crystals, and their round shape is natural, though no one knows exactly how or why, unlike the human polished diamond marbles we shared awhile back (see http://on.fb.me/19dQmlF). So far they have only been found in Brazil, and this specimen measures 1x1x1cm, weighing in at 10.15 carats.LozImage credit: Rob Lavinsky/iRocks.com -- source link
#balas#diammond#crystalline#polycrystalline#geology#mineral#sphere#mineralogy#mineralmonday