OVAL VS MARQUISE DIAMOND CUT:
Oval Diamond Cut
Elongated versions in shape and brilliance as that of the
round brilliant.
It is important to consider the length to width ratio in an
oval diamond to get the best shape and avoid bow ties. A
perfectly symmetrical oval cut diamond should have a L/
W ratio of 1.30, while anything higher than 1.50 will yield a bow-tie.
Advantages:
- Perfect shape for round cut diamond’s sparkle and the pear cut diamond’s unique grace.
- Longer oval cut diamonds with flat shoulders are usually considered more elegant while more wider oval cut diamonds with rounded shoulders give less of a bow tie
Look for:
- Depth percentage of 58%-64%
- VS1 – SI1 mark for the best value
- Table size for ovals is 54%-63%
- F-G-H
- optimal oval ratio of length to width is 1.36 to 1.45
Disadvantage:
If the length to width ratio is not chosen wisely, it will yield a bow-tie effect and interfere with the sparkle of the diamonds.Marquise Diamond Cut
Due to their fancy, elongated shape, it’s tricky to
determine Cut quality of a Marquise Diamond. Depth %
and table % vary from diamond to diamond, and length
to width ratio preference is dependent on personal
appeal.
Advantages:
- Depth: 60% to 68% (under 65% is relatively hard to find) you don’t need any built-up depth to maintain brilliance, you should go as low as possible in terms of depth
- This diamond shape is versatile and makes your fingers appear longer and slender.
- You can save money because these stones will look slightly bigger than fancy stones of the same weight
Look for:
- Depth: 58% to 60%
- Table: 53% to 63%
- Girdle thin to slightly thick.
- Recommended Length to width ratio for Marquise diamond of around 1.85-2.00
- VS2-SI1’ range, as marquise cuts hide small imperfections really well.
- Clarity for the best value
- Color G - H
Disadvantage:
- It is not straightforward to determine Cut quality of a Marquise Diamond thanks to their fancy, elongated shape
- Each diamond will have a unique Depth % and table %. Length to width ratio is a personal preference
- Prone to chipping at pointed ends unless set in appropriate setting
- Nearly all Marquise Diamonds contain a bowtie effect
