Opal Adventures
Auteur : Paul B. Downing (Ph.D.)
Date de publication : 1990
Éditeur : Majestic Gems & Carvings
Nombre de pages : 234
Résumé du livre
Grab your suitcase, we're going to Australia! Get ready to bump over dirt roads, climb down long ladders, & dig beautiful gems. Opal expert Paul Downing shares his experiences at the Australian opal mines. History, mining techniques, cutting & setting opal for jewelry are also covered. Color & B&W photographs.