Carats – Gem Weight & Jewelry

Estimate gemstone weight instantly. 80+ stones, 12 cut factors, wire gauge charts, and a full set of area, distance, and volume converters for jewelers and metalsmiths.

If you work with gemstones, buy loose stones, do repairs, or just need a fast way to check what something weighs before it hits the scale, Carats gets out of your way and gives you the answer. Enter three measurements, pick your stone and cut style, and the estimated carat weight is right there. No loading screens. No sign-ins. No nonsense.

Carat weight conversion, wire gauge reference, and a solid set of area, distance, and volume converters that come up constantly in a jewelry or metalsmithing workflow.

Carats

• Carats Weight (Grams / Carats / Points / Milligrams)
• Carats Size (Based on Girdle Length, Girdle Width, Depth, Stone type and Facet Style)

Gauge Thickness Converter

• Area Converter (Square Inches to/from Square Centimeters)
• Distance Converter (Inches to/from Centimeters)

Facet Styles (Listed in alphabetical order) :: Cabochon Cut, Emerald Cut Faceted, Marquise Cut Faceted, Oval Faceted, Pear Cut Faceted, Rectangular Cushions, Rectangular Faceted, Rectangular Step Cut, Round Faceted, Square Cushions, Square Cut Faceted, and Square Step Cut.

Gemstone Types (Listed in alphabetical order) :: Achorite, Agate, Alexandrite, Almandine, Almandine Spinel, Almandine-Spessartine, Amazonite, Amethyst, Andradite, Aquamarine, Balas Ruby, Black Opal, Bloodstone, Brazilian Emerald, Cairngorm, Carnelian, Cat's Eye, Chalcedony, Chlorspinel, Chrome Pyrope, Chrysoberyl, Chrysoprase, Citrine, Color-Change Garnet, Demantoid, Diamond, Dravite, Emerald, Feldspar, Fire Opal, Garnet, Ghanospinel, Goshenite, Green Quartz, Grossular, Heliodore, Heliotrope, Hessonite, Hyacinth, Indicolite, Jade, Jadeite, Jargon, Jasper, Labradorite, Lapis Lazuli, Malaia, Matura Diamond, Moonstone, Morganite, Morion, Nephrite, Onyx, Opal, Orthoclase, Peridot, Peristerite, Praziolite, Pyrope, Pyrope-Almandine, Pyrope-Spessartine, Quartz, Red Beryl, Rhodolite, Rock Crystal, Rose Quartz, Rubellite, Rubicelle, Ruby, Sapphire, Sapphire Spinel, Siberite, Smoky Quartz, Spessartine, Spinel, Sunstone, Topaz, Topazolite, Tourmaline, Tsavorite, Turquoise, Uvarovite, Verdilite, Water Opal, White Opal, and Zircon

This app features:

• Send your calculations or conversions by email or share sheet • Universal App • All iPhone screens are supported • Fast app switching • Automatically Saves Your Inputs • Latest version of iOS is supported

No network connectivity required.

Note: All information in this app is for informational purposes only.