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Multi Generational Calcite and Quartz Formation

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  • Exceptional “Excalibur” Amethyst Formation, Calcite, Agate, Quartz
    Located in London, GB
    With its extremely unusual central amethyst epimorph after calcite, this natural wonder evokes images of the legendary sword, Excalibur, magically fixed in the stone. Elsewhere we ...
    Category

    Antique 15th Century and Earlier Uruguayan Natural Specimens

    Materials

    Agate, Amethyst, Quartz

  • Rare Tabletop Amethyst Formation with Calcites Goethite & Quartz
    Located in London, GB
    A very rare and exquisite table-top amethyst formation. The long formation preserves prominent golden calcites crystal on a bed of deep purple amethyst and is particularly sculptural...
    Category

    Antique 15th Century and Earlier Uruguayan Natural Specimens

    Materials

    Agate, Amethyst, Quartz

  • Rare Tabletop Amethyst Formation with Calcite Goethite & Quartz
    Located in London, GB
    A very rare and exquisite table-top amethyst formation. The long fromation preserves a prominent golden calcite crystal on a bed of deep purple amethyst and is particularly sculptura...
    Category

    Antique 15th Century and Earlier Uruguayan Natural Specimens

    Materials

    Agate, Amethyst, Quartz

  • Agatised Geode Slice with Rare Central Calcite Formation and White Quartz
    Located in London, GB
    Bordered by a thick, blueish agate layer, this wonderful slice preserves an interior of large white quartz crystals with a prominent centr...
    Category

    Antique 15th Century and Earlier Uruguayan Natural Specimens

    Materials

    Agate, Amethyst, Quartz

  • Rough Amethyst Calcite Formation Surrounded by Green Celadonite and White Quartz
    Located in London, GB
    In this piece, the rough amethyst's rich purple colouration is brilliantly pierced by the matt cream calcite formation that is bordered by a green celad...
    Category

    Antique 15th Century and Earlier Uruguayan Natural Specimens

    Materials

    Agate, Amethyst, Quartz

  • Amethyst Cluster with Stalactite Formations and Calcite Crystals
    Located in London, GB
    An exquisite and rare amethyst cluster with stalactite formations and calcite crystals. The stunning piece’s shape resembles a “Cascade” or “waterfa...
    Category

    Antique 15th Century and Earlier Uruguayan Natural Specimens

    Materials

    Agate, Amethyst, Quartz

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  • Amethyst Calcite Formation
    Located in London, GB
    An amethyst crystal with central calcite piece.   
    Category

    Antique 15th Century and Earlier Unknown Prehistoric Natural Specimens

    Materials

    Amethyst

  • Purple Amethyst Geode with Rare Sparkly Flower-Like Druzy Formation and Calcite
    Located in Ametista Do Sul, BR
    An Amethyst Geode that brings rarely seen dual-zoned purple Amethyst druzy, gorgeous aesthetics, and rare calcite inclusions, this is a piece of natural artistry. This geode is a cen...
    Category

    2010s Brazilian Natural Specimens

    Materials

    Agate, Amethyst, Crystal, Rock Crystal

  • Deep Purple Amethyst Geode with Rare Flower-Like Druzy Formation and Calcite
    Located in Ametista Do Sul, BR
    An Amethyst Geode that brings rarely seen dual-zoned purple Amethyst druzy, gorgeous aesthetics, and rare double-terminated calcite inclusions, this is a piece of natural artistry. T...
    Category

    2010s Brazilian Natural Specimens

    Materials

    Agate, Amethyst, Crystal, Rock Crystal

  • Calcite with Epidote, Ferroaxinite, and Quartz From Pakistan
    Located in New York, NY
    This singular formation from Pakistan features translucent calcite accented by blades of deep green epidote and purple ferroaxinite with quartz crystals on the bottom of the specimen...
    Category

    2010s Pakistani Natural Specimens

    Materials

    Crystal, Quartz

  • Pair of Purple Amethyst Geodes with Rare Flower-Like Druzy Formation and Calcite
    Located in Ametista Do Sul, BR
    A pair of Amethyst Geodes, each bringing the rarely seen dual-zoned purple Amethyst druzy, gorgeous aesthetics, and rare calcite inclusions, are pieces of natural artistry. These geo...
    Category

    2010s Brazilian Natural Specimens

    Materials

    Agate, Amethyst, Crystal, Rock Crystal

  • Natural Specimen: Apophilite, Quartz and Calcite Flowers Crystals, Italy, 1880
    Located in Milan, IT
    A Naturalia mineral specimen. A druse of apophilite, quartz, colacite and calcite flowers crystals, mounted over a guild-plated wooden base on a vase shape. Italy 1880 ca.
    Category

    Antique Late 19th Century Italian Natural Specimens

    Materials

    Crystal

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