A unique mineralogical presentation piece, this is a large, thick slice of tourmalinated quartz which originates from Brazil. Polished into a hexagonal form, it still retains a natural crystal surface along one edge. The quartz is highly transparent, relatively to other included quartzes and the black crystals stand out in high relief. The slab sits on a custom-fabricated stand of silver on a rectangular onyx slab, the silver accented with engraved lines remininescent of the tourmaline crystals, which are oxidized to allow them to appear more visible. Height overall: 6in. Slice measures: 5 1/2 x 4 1/4 x 1/2 in
A unique mineralogical presentation piece, this is a large, thick slice of tourmalinated quartz which originates from Brazil. Polished into a hexagonal form, it still retains a natural crystal surface along one edge. The quartz is highly transparent, relatively to other included quartzes and the black crystals stand out in high relief. The slab sits on a custom-fabricated stand of silver on a rectangular onyx slab, the silver accented with engraved lines remininescent of the tourmaline crystals, which are oxidized to allow them to appear more visible. Height overall: 6in. Slice measures: 5 1/2 x 4 1/4 x 1/2 in
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
