Pinfire - Gems & Colloids

Title: Pinfire - Gems & Colloids
Category: Gemstones
Clicks: 903
Listing added: Nov 1, 2011
Extensive information on precious opals. Topics include chemical and physical properties, as well as synthetics and imitations (in German)
Fields
ZIP: 81549
Country: GERMANY
State: Bavaria
City: Munich
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