Nikon Small World - Gallery - 12th Place, 1988 - John I. Koivula

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12^th Place, 1988

John I. Koivula

Gemological Institute of America
Santa Monica, California, USA

Inclusions of pyrolusite and limonite in a polished slab of Brazilian agate (14x)

Brightfield

The 1988 Winners

1^st David Smith
2^nd Susan Staniforth
3^rd Peter Dartsch
4^th George Watchmaker
5^th William West
6^th Pentti Alho
7^th Karl Hecker
8^th Karl Deckart
9^th Cynthia Polchow
10^th Robert Calentine
11^th Ulrich Büttner
12^th John Koivula
13^th M. Walker
14^th N. Barker
15^th M. Daisley
16^th Roland Marsh
17^th Dennis Kunkel
18^th Marc Van Hove
19^th M. Walker
20^th Peter Dartsch

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