Octagon Cut Gemstone Weight Chart

Octagon Cut Gemstone is crafted with the rows of wide, flat, concentric facets that resemble steps, like a staircase. This cut is not equidistant, unlike Emerald cut. The octagon cut has totally 53 facets. Octagon faceted gemstone is mainly used in portraying the colors of the gemstones. Gemstones with beautiful colors looks more elegant with the octagon cut. Here the Octagon Cut Gemstone Weight Chart shows the caret weight of different gemstones in their different sizes.

Octagon Faceted Gemstone mm to Carat Conversion

Octagon Faceted Gemstone Weight Chart (approximate weights)
5x3mm 6x4mm 7x5mm 8x6mm 9x7mm 10x8mm 11x9mm 12x10mm 14x10mm
Alexandrite .40 ct .70 ct 1.30 ct 2.60 ct 3.60 ct 4.20 ct 6.00 ct 8.50 ct 9.90 ct
Amethyst .35 ct .55 ct 1.00 ct 1.60 ct 2.25 ct 2.90 ct 4.20 ct 5.60 ct 7.25 ct
Aquamarine .25 ct .50 ct .80 ct 1.40 ct 2.00 ct 3.00 ct 4.30 ct 4.75 ct 7.75 ct
Citrine .35 ct .55 ct 1.00 ct 1.60 ct 2.25 ct 2.90 ct 4.20 ct 5.60 ct 7.25 ct
Diamond .25 ct .50 ct 1.00 ct 1.50 ct 3.00 ct 4.00 ct 5.00 ct 7.80 ct 8.80 ct
Emerald .30 ct .60 ct .90 ct 1.80 ct 2.31 ct 3.15 ct 4.50 ct 5.25 ct 5.80 ct
Garnet .40 ct .80 ct 1.20 ct 1.70 ct 2.50 ct 3.50 ct 4.30 ct 6.35 ct 9.00 ct
Peridot .35 ct .60 ct 1.00 ct 1.70 ct 2.25 ct 3.80 ct 5.25 ct 6.25 ct 8.80 ct
Ruby .55 ct .75 ct 1.15 ct 1.60 ct 2.30 ct 2.75 ct 4.00 ct 6.25 ct 9.00 ct
Sapphire .55 ct .75 ct 1.15 ct 1.75 ct 2.30 ct 2.75 ct 4.00 ct 6.25 ct 9.00 ct
Topaz .40 ct .65 ct 1.25 ct 2.40 ct 3.40 ct 4.00 ct 5.75 ct 8.00 ct 9.50 ct
Tourmaline .30 ct .60 ct 1.60 ct 2.15 ct 2.80 ct 3.60 ct 4.30 ct 5.20 ct 8.50 ct
Zircon .60 ct .85 ct 1.70 ct 2.35 ct 3.90 ct 4.50 ct 6.20 ct 7.01 ct 8.95 ct

Octagon Cut Gemstone Weight may vary within 10 percent. This faceted cut gemstone has variety of types and colors with different shapes.


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