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Round Cut
Round Cut
Calibrated Size Chart for Standard Jewelry Mountings (approximate weights)


Size in mm Weight in carat234566.57810
Alexandrite.04.12.35.631.301.862.152.905.20
Amethyst.04.10.20.40.701.101.301.803.30
Aquamarine.04.10.25.45.751.311.602.403.50
Citrine.04.10.20.40.701.101.301.803.30
Diamond.03.10.23.47.801.001.251.903.50
Emerald.04.12.27.48.801.261.702.506.10
Garnet.05.13.30 .601.001.401.602.505.75
Opal.02.09.16.34.57.75.831.302.00
Peridot.05.12.26.50.851.111.252.005.25
Ruby.05.15.34.651.051.411.602.254.50
Sapphire.05.15.34.651.051.411.602.254.50
Topaz.04.11.30.561.001.361.552.505.75
Tourmaline.04.12.24.45.751.281.552.003.00
Zircon.06.17.36.691.251.581.752.605.00

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