The diamond on the left is 1 00 carat and has a good cut.
Actual size 1 carat radiant cut diamond.
Radiants can be square or rectangular.
Face up size of this diamond is as you would expect of a 1ct radiant learn more.
On the other hand the size of a 5 carat diamond is approximately 5 2mm.
Actual size of 6 5 6 5 3 92mm with 60 3 depth and a face up area of 33 18mm.
With that in mind check out our radiant cut diamond size chart to break down a radiants diamond s carat weight and millimeter size.
Likewise the physical size of a 2 carat diamond 8 2mm diameter isn t twice as big as that of a 1 carat diamond 6 5mm diameter.
The importance of face up size.
Understanding the 4 c s of a diamond color cut carat clarity and the factors that impact its quality price and value.
This 1 carat radiant has a face up area of approx.
In short all is ok this diamond looks its weight.
The chart below gives you the weight and millimeter size conversions for the ideal radiant cut diamond.
Even though the carat weight is 50 of a 1 carat stone it doesn t face up twice as small.
The importance of face up size.
For example this 1 01 carat vs1 clarity h color radiant cut diamond from james allen costs 3 300.
The surface area is 6 23x6 2mm.
The face up size of this 1 4 carat radiant 6 46 6 46 4 13mm is within the normal range for 1 4ct diamonds of this shape.
The ideal ratio for a radiant cut diamond produces a slightly rectangular shape.
The face up size of this 1 5 carat radiant 6 61 6 61 4 23mm is within the normal range for 1 5ct diamonds of this shape.
Compared to 1 4ct radiant reference diamond see below this diamond is of adequate size when viewed from the top.
Compared to 1 5ct radiant reference diamond see below this diamond is of adequate size when viewed from the top.
The diamond on the right weighs in at 0 92 carats and has an excellent cut.
In fact the radiant cut diamond is one of the most affordable diamond shapes.
31 74 mm which falls within the normal range for 1ct radiants a face up area is the area of the girdle plane and tells you how big the stone looks when viewed from the top as set in a ring.
In short all is ok this diamond looks its weight.
So even though the two diamonds have different carat sizes they have the same surface area because of the poorer cut of the first one about 10 of the carat weight is wasted.
Carat to mm chart actual size the following is a chart of actual diamond sizes from 0 25 to 10 carats with their corresponding face up dimensions in millimeters length width.
