Diamonds can be brittle. If you hit a diamond really hard, it can crack or chip. Don’t wear your diamond when doing rough work. Store diamonds separately. When stored with other jewelry, diamonds may scratch other jewelry or each other.
The best method for cleaning is a jeweler’s polishing cloth. Most jewelers will clean your diamond [...]

Carat:
Carat is the unit of weight used to measure diamonds. There are 100 points to a carat, and a stone weighting less than a carat may be referred to by its points, such as .25 points or .25. This would be a quarter carat. Diamonds may also be classified by terms such as 1/5 or [...]