Gemstone : Kalimaya Banten

Source :

http://www.google.co.id/search?q=kalimaya+banten+bongkahan&tbm=isch&ei=9S4pWJ3rMZOUvQS2lo2YDQ&start=20&sa=N#mhpiv=9

This hydrate silica stone was found first in lebak district,Banten. West java. The stone have divers beauty color and can change  the color if we shift to other side.

The local name is batu kalimaya / opal stone, now become most collected gemstone although the hardness level only 5,5 and very brittle.

The bright color called kalimaya susu / milk opal and the dark one is called black opal.

Source :

http://www.google.co.id/search?q=batu+kalimaya+banten+susu+asli&tbm=isch&oq=kalimaya+banten+su&gs_l=mobile-heirloom-serp.1.4.41l2j0i5i30l3.17159.19360.0.22534.11.8.0.0.0.0.564.2975.2-3j2j2j1.8.0....0...1c.1.34.mobile-heirloom-serp..7.4.1174.OEP6HY-TSf0#mhpiv=11

Source :

http://www.google.co.id/search?q=kalimaya+banten+black+opal&prmd=ivns&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiczt_BtKfQAhXDLY8KHe4-DwQQ_AUIBigB#mhpiv=3