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細節
AN IMPRESSIVE OPAL MATRIX SPECIMEN FROM YOWAH, QUEENSLAND, AUSTRALIA,
displaying a broad band of opal penetrating the sandstone matrix, approximate dimensions 36x25x9 cms, (14x10x3.5 ins.).
Specimen and detail illustrated with rings lots 145 and 110 for scale.
displaying a broad band of opal penetrating the sandstone matrix, approximate dimensions 36x25x9 cms, (14x10x3.5 ins.).
Specimen and detail illustrated with rings lots 145 and 110 for scale.