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→Rubies
====Rubies====
*[http://archive.org/stream/cu31924023461456#page/n5/mode/2up ''Burmah No 2: Correspondence respecting the Ruby Mines of Upper Burmah''] presented to both Houses of Parliament by command of Her Majesty 1887 Archive.org
*[https://archive.org/stream/preciousstonesa03stregoog#page/n194/mode/2up "Burma Rubies"] page 153 ''Precious stones and gems, their history, sources and characteristics'' by Edwin William Streeter 6th Edition 1898 Archive.org
====Tin====
