The most important characteristic of a stone is its weight. When it comes to diamonds, a special unit of measurement is used: the carat, or ct for short. Jewelers use specialized precision scales to determine a gem's weight. The rough characteristics of a gem can also be determined without the help of a scale, using visual examination instead, as a diamond's size and its weight correlates significantly. For help, see the Diamond Size Chart.
How this term came to be is quite curious. The word "carat" comes from the name of the carob tree's seeds, which were used in ancient times to determine the weight of a diamond. In terms of our units of measurement today, 1 ct is equal to 0.2 grams. All in all there are 100 units on a specialized scale.
The weight of a gem is measured with high precision: up to 0.01 ct. But as already mentioned, it is possible to determine the approximate weight by the size of the stone when it is set on its own. Determining the carat weight for a diamond that is already set in a piece is much more complicated. To estimate the weight, a special formula is used. When it comes to the most popular round cut, this formula is height * diameter * 0.0061. The formula may differ slightly depending on the shape of the stone (the last number varies, and length times width is used instead of diameter). For instance, a heart cut uses height * length * width * 0.0059, while a marquis cut, at a ratio of 2:1, uses height * length * width * 0.058.
Diamond carats and stone prices
Prices for processed diamonds vary depending on a number of characteristics. Here are the main criteria that affect prices:
weight and size;
Diamonds of less than 0.01 ct (the margin of error in weighing) are considered to be bort diamonds. Other diamonds get divided up into size categories such as small (less than 0.29 ct), medium (0.3-0.99 ct) and large (1 ct and up). Diamonds of different sizes are valued differently. With large stones, more attention is placed on their clarity and color. In smaller stones, these characteristics are hardly noticeable, so weight comes first. Tavernier's law is used to determine the price of a diamond: the value of a diamond is equal to carat weight squared multiplied by the basic price of a 1 ct stone.
Our Company collects the following data:
Personal identification information (Name, email address, phone number, etc.)
How do we collect your data?
You directly provide Our Company with most of the data we collect. We collect data and process data when you:
Register online or place an order for any of our products or services. Voluntarily complete a customer survey or provide feedback on any of our message boards or via email. Use or view our website via your browser’s cookies.
How will we use your data?
Our Company collects your data so that we can:
Process your order and manage your account. Email you with special offers on other products and services we think you might like. If you agree, Our Company and Data controller will share your data with our partner companies so that they may offer you their products and services. When Our Company processes your order, it may send your data to, and also use the resulting information from, credit reference agencies to prevent fraudulent purchases.
How do we store your data?
Our Company securely stores your data at Data Controller (Hammarby Limited, Reg. No. HE334914, 116 Gladstonos Str, Michael Kyprianou House, 3rd & 4th floor, 3032 Limassol, Cyprus).
Data controller will keep your for personal data for 10 years or more. Once this time period has expired, we will delete your data.
Our Company would like to send you information about products and services of ours that we think you might like, as well as those of our partner companies. If you have agreed to receive marketing, you may always opt out at a later date. You have the right at any time to stop Our Company from contacting you for marketing purposes or giving your data to other members of the Our Company Group. If you no longer wish to be contacted for marketing purposes, please click here.
What are your data protection rights?
Our Company would like to make sure you are fully aware of all of your data protection rights. Every user is entitled to the following: The right to access – You have the right to request Our Company for copies of your personal data. We may charge you a small fee for this service. The right to rectification – You have the right to request that Our Company correct any information you believe is inaccurate. You also have the right to request Our Company to complete the information you believe is incomplete. The right to erasure – You have the right to request that Our Company erase your personal data, under certain conditions. The right to restrict processing – You have the right to request that Our Company restrict the processing of your personal data, under certain conditions. The right to object to processing – You have the right to object to Our Company’s processing of your personal data, under certain conditions. The right to data portability – You have the right to request that Our Company transfer the data that we have collected to another organization, or directly to you, under certain conditions. If you make a request, we have one month to respond to you. If you would like to exercise any of these rights, please contact us at our email:
Or write to Data controller: firstname.lastname@example.org
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How to contact us
Email us at: email@example.com Or write to us at: Hammarby Limited, Reg. No. HE334914, 116 Gladstonos Str, Michael Kyprianou House, 3rd & 4th floor, 3032 Limassol, Cyprus How to contact the appropriate authority Should you wish to report a complaint or if you feel that Our Company has not addressed your concern in a satisfactory manner, you may contact the Information Commissioner’s Office.