calcite crystals (3)

Harvard College

Date: early 20th Century

Object number: 1998-1-0337

American

Date: early 20th Century

Object number: 1997-1-1689

American

Date: mid 20th Century

Object number: 2004-1-0358

Harvard College

Date: late 19th Century

Object number: 1998-1-0465b

American

Date: late 19th-early 20th Century

Object number: 1997-1-1448

W. Harold Tomlinson

Date: circa 1910

Accessories: mahogany box

Object number: 1998-1-0522

George Washington Pierce

Date: circa 1900

Object number: 3892

George Washington Pierce

Date: circa 1900

Object number: 3893

American

Date: 1900-1950

Object number: 2007-1-0414

American

Date: late 19th-early 20th Century

Accessories: piece of paper: "Notice the double refraction / Calcite/CaC03, "Iceland Spar"/ Formed in cold Solutions, Sp.Gr. 2.714. / Hexagonal (Trigonal)"

Object number: 3937

American

Date: late 19th-early 20th Century

Object number: 3939

Harvard College

Date: late 19th Century

Object number: 1998-1-0465