- Karat - Karat weight
Not to be confused with carat weight which is specific to gemstones, karat weight is specific to gold. Karat weight refers to the purity of the gold. The higher the karat, the purer the gold: 24kt is pure gold, 18kt is 75% pure and 12kt is 50% pure. Lower karat weights contain more of an alloy metal such as silver, copper or palladium. While lower karat weights are lower in cost, the additional metals can often make the gold stronger. In fact, 24kt gold is too soft to use for jewelry.
The karat weight is typically stamped onto the item of jewelry itself.
- Kimberley Process - Kimberly Process Certification Scheme
Created in 2000 to reduce the flow of conflict diamonds throughout the world, the Kimberly Process was sparked by a United Nations General Assembly in South Africa. It was agreed that the the creation of an international certification scheme for rough diamonds was key to stemming the trade of diamonds used to finance rebel movements.
The Kimberly Process Certification Scheme went into effect in 2003. All countries that are interested in complying with the process are welcome to. With a current total of 81 participating countries, the Kimberly Process members now account for over 99% of rough diamond production.
- Knot - a transparent crystal that extends to the surface of a diamond.
A knot in a diamond is an imperfection that typically has a negative impact on the value of the stone.
- Koh-I-Noor -
This legendary diamond has been the subject of controversy for hundreds of years. Believed to have been unearthed in India in the 1300’s, the rough stone is said to have weight nearly 800 carats but the earliest record of the cut stone was 186 carats.
In 1849, the Koh-I-Noor was given to Queen Victoria after the British conquest of Punjab. Three years later, her husband Prince Albert had the diamond recut to an oval shaped, 105.6 carat stone in order to improve it’s sparkle. The dramatic loss in weight was partly due to the discovery of multiple flaws in the stone. Queen Victoria was not comfortable owning the Koh-I-Noor, stating that she was opposed to how it was acquired.
The government of India first requested that the stone be returned to India in 1947. Since then, the Indian Government has made repeated claims of ownership, which to date have all been denied by the British government.