The size of these two objects is exactly the same: 5mm.
Generally, you would write .50 carat to represent a half-carat stone.
The total weight of all the diamonds combined in the carat total weight equals one half carat -- .50. The mm measurement of each individual diamond does not depend on the total carat weight of the collection.
A 60-point diamond weighs just over half a carat (.50 carats). The size of the ring is not related to the weight of the diamond.
Diamond sizes are dependent on the size of the stone mined. Diamonds are sold by various weights, including logical increments such as quarter, half and one carat.
If the diamond is a round brilliant cut, the measurement at the girdle of a diamond of this carat weight measures about 5.2 mm. If the diamond is not a round brilliant cut, the measurement will be different.
A one-half carat diamond weighs 100 milligrams = 0.10 gram.
Generally, you would write .50 carat to represent a half-carat stone.
Half carat is the term used to measure the weight of the real diamond. A diamond's weight does not define or detract from the fact that the diamond is or is not a real diamond.
One carat weight of diamond weighs .20 grammes, so your diamond is about half that weight, or roughly half a carat.
A half carat diamond of this cut measures 5.2 mm at the girdle; a .65 carat diamond measures 5.6 mm at the girdle. A certified gemologist can give you the exact carat weight of your diamond.
1 carat is 0.2g, so 1/2 of a carat equates to a 0.1g gemstone.
The descriptor '.45' usually documents the carat weight of a diamond: meaning 45/100ths of a carat, or nearly half a carat.
Carats in diamond weight can be divided into 100ths, meaning that a quarter carat stone could be described as a .25 carat diamond. In your case, you could describe this stone, as just over half a carat or .58 carat diamond. Less than full carat stones are also called points: a 58 point stone in your case.
The value of a diamond depends on its cut, its clarity, its colour and its carat weight. A local jeweler can give you the answer you want.
A forty-point diamond is nearly half a carat, which would be fifty points.
The total weight of all the diamonds combined in the carat total weight equals one half carat -- .50. The mm measurement of each individual diamond does not depend on the total carat weight of the collection.
You could say that it was almost half a carat, since a full carat is sometimes called 100 points.