ONE THREAD WINDS
Materials: Gambier limestone
Gambier Limestone, from South Australia, is composed of fragments of bryozoa or lace coral and shell deposited more than 15 million years ago, when a large part of southern Australia was covered by a warm sea. The shell debris has compacted over time to form a soft porous limestone that retains a matt finish. Occasionally larger shells and sharks teeth are found in the stone.
ONE THREAD WINDS
Materials: Gambier limestone
Gambier Limestone, from South Australia, is composed of fragments of bryozoa or lace coral and shell deposited more than 15 million years ago, when a large part of southern Australia was covered by a warm sea. The shell debris has compacted over time to form a soft porous limestone that retains a matt finish. Occasionally larger shells and sharks teeth are found in the stone.
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Hawkesbury Sandstone
0.25 x 0.25 x 0.05 m
Hawkesbury Sandstone forms the spectacular cliffs that span the Sydney Basin from the Watagans to the Illawarra. During Triassic times (200 million years ago) in a vast braided river system extended across South Eastern Australia, depositing up to 200m of quartz rich sand. This sand has been compacted and cemented to form a very hard sandstone. The warm golden colour and interesting patterns in the stone are the result of siderite, an iron rich mineral, being deposited around the sand grains as water moves through the stone.