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Weight: 29
Average size range: 350 to 750 grams
The oldest deposits have been dated to approximately 2 billion years ago
Gemmy Imperial Topaz
known as aventurescence
Tumbled Sardonyx Agate Eyes (1 inch) 4 OZ. LOT #4 Weight: 29Quantity: 4 ounces Average size range: 1 inch Sardonyx is a combination of two different varieties of chalcedony in distinct layers. The stone's main red and brown portions are sard, a variety of chalcedony, and the white and black bands are onyx. Due to sardonyxs color and banding, it is sometimes called carnelian onyx.
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