Carats – Gem Weight & Jewelry Apple

Carats – Gem Weight & Jewelry

Carat Estimator & Converters

Features & Capabilities

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.

User Growth & Download Statistics

App
By:
Verosocial Studio
Rating:
3.00
(1)
2.00
Version:
8.1 Last updated: 2026-05-09
Version code:
885429173
Creation date:
2011-04-13
Compatible devices:
Size:
4.67MB
Price:
1
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-06-06
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.
Developed by:
Verosocial Studio
Apple Apps Store
https://apps.apple.com/ch/app/carats-gem-weight-jewelry/id429201473?l=en-GB
Website:
http://verosocial.com/2011/04/06/carats-calculator/

User Reviews

The update screwed the estimations
by sh*****, 2026-06-02

I'm no expert so I can't speak to it's accuracy. But it is definitely consistent and very easy to use. Helpful for my eBay postings!
by Mi*****, 2014-02-20

Works fine for round cut calc on the go but seems to under-carat marquise diamonds by about .05
by Lo*****, 2013-04-20
View all user reviews ›

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