Lors de mon dernier voyage en Californie, j'ai eu la chance de visiter le musée du GIA de Carlsbad. Les pierres des USA y sont particulièrement bien représentées notamment grace à l'immense contribution de la Famille Hauser (https://www.gia.edu/gia-museum-exhibit-hauser-mineral-collection). On peut y trouver toutes les pierres emblématiques des USA comme des bois pétrifiés provenant de Holbrook, AZ ou de la formation Morrisson en Utah, de sublimes variscites d'Utah, de la chrysocolle et azurite d'Arizona, de la rhodonite de Californie ou encore des jaspes Bruneau d'Idaho... Une superbe collection mettant en valeur le rockhounding.
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Ce musée bénéficie également de nombreux autres donateurs prestigieux de monde entier. Les gemmes brutes ou taillées sont pour beaucoup de couleur et de dimensions exceptionnelles. Et là aussi, les pierres nord-américaines sont bien représentées comme la bénitoïte, de Californie, l'agate du Montana, les jaspes de Willow Creek en Oregon ainsi que les grenats spessartite et les tourmalines de Californie sans oublier les sublimes rhodochrosites et amazonites du Colorado.
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Une visite à faire sans hésiter si vous passer par le comté de San Diego en Californie.