Yellow Optical Calcite / 1.5-2.5" AVG - 1 LB. LOT

Marsoni

M251S

$17.95

Get it in 3 business days with 1 day shipping. Friday, May 29

Yellow Optical Calcite / 1.5-2.5" AVG - 1 LB. LOTQuantity: 1 pound Average size range: 1. 5 to 2. 5 inches Optical calcite, also known as Iceland spar, is a special type of calcite that forms extremely clear and somewhat rectangular crystals. For centuries, sailors would use these crystals to help determine the direction of the sun on cloudy days for navigation. This optical calcite also contains trace iron impurities, giving it a faint yellow tinge.

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Runs much larger than I expected. I am 5’4”& 136 pounds. Usually wear a medium or large in some knit tops. So I need to stitch the side seams in hopes it will fit better. I like the weight and softness of the fabric, but really disappointed in the too large armholes. Unwearable for me until I can sew new side seams.

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Reviewed in the United States on February 11, 2026