Quartz and tourmaline - Minas Gerais, Brazil
Specimen composed of a translucent green tourmaline with a...
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Specimen composed of a translucent green tourmaline with a...
Thin, fully polished slab of prehnite with clearly visible...
Thin, fully polished slab of prehnite with clearly visible...
Thin, fully polished slab of prehnite with clearly visible...
Polished slice of polyhedral agate, in shades of white, which...
Dark red vanadinite crystals with superb brilliance. A classic...
A beautiful specimen of this incomplete but unbroken vivianite...
Aragonite crystal clusters are less common than single...
Specimen of translucent quartz crystals with a beautiful...
Light purple fluorite with shiny surfaces, although showing...
Colorless to golden yellow fluorite, shiny, with truncated...
Quincyte, known as “pink opal.” Cut and semi-polished on the...
Quincyte, known as “pink opal.” Cut and semi-polished on the...
Well-formed smoky quartz crystals with shiny, striated faces...
Quincyte, known as “pink opal.” Cut and semi-polished on the...
Quincyte, known as “pink opal.” Cut and semi-polished on the...
A cluster of translucent quartz crystals with a beautiful...
Large scalenohedron of slightly pink calcite partially covered...
Small translucent smoky quartz crystals, several of which are...
Polished slice of polyhedral agate, which can be enjoyed as is...
Shiny stalactite prehnite accompanied by unidentified white...
Translucent biterminated quartz from La Chambre in Maurienne...
A piece from the famous locality of Saint-Pierre-de-Mésage,...
Snowflake" (= reticulated) crystallised cerussite sprinkled...
Botryoidal quartz, commonly known as ‘cluster chalcedony’,...
Small floating group of bright violet amethyst with deeper...
A bright colourless calcite geode, superbly balanced with a...
A set of bright, translucent “diamond” calcite crystals.7 x 8...
Large hematite slab crystallized on both sides, with a nice...
Amethyst showing some damage, but with a superb deep purple...
Small group of azurite perfect in color, brilliance and...
Aragonite of red colour in the centre and yellow at the ends...