607g Optical Calcite Freeform TC1977
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607g Optical Calcite Freeform
Approx. Dimensions: 3x2.5x2.75 inches
Approx. Weight: 607 grams
Locality: Maharashtra, India
Optical calcite is also referred to as Iceland Spar because of its first discovery in Eskifjord, Iceland. It is typically colorless, and exhibits the optical phenomenon of double refraction where an object viewed through the calcite will appear doubled. Double refraction, or birefraction, is also called birefringence and is also responsible for the incredible displays of rainbows inside many optical calcite pieces.
Optical calcite is a very soft material that cleaves rather easily, usually fracturing into rhombohedral shapes. This material has historical significance for its use in sighting equipment for bombardiers and gunners during wartime.
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International shipments are subject to duties/taxes that vary by recipient country. You are responsible for any duties, fees, or taxes associated with your shipment. International shipments that are returned to us due to failure to pay duties, fees, or taxes will be assessed a 25% restocking fee.
Returns are accepted within 14 days of delivery according to the tracking information on the order. Items must be returned in new/unused/undamaged condition to receive a full refund. Items returned to us damaged or not in original condition will receive a partial refund. Refunds will be issued to the original payment method on the order.
If a return is made for reasons other than an error on our part, a 20% restocking fee will apply and will be deducted from any refund due.
We will not accept returns for any items outside of the 14 day return window.
Return shipping costs are the responsibility of the sender. We do not refund shipping costs. Please contact us if you need to return an item.
Updated 5/14/2026
