While the classic cushion cut diamond is a square (with a length to width ratio of 1.00), they are often found in slightly rectangular shapes as well. The most popular shape is a slight rectangle of 1.10-1.20 length to width, however personal preference should dictate choice. Every Lumera Diamond includes precise measurements, as well as the length to width ratio, so you know the exact shape of the cushion cut diamond you are considering.
|Square||1.00 - 1.03||1.04 - 1.05||1.06 - 1.08||> 1.08|
|Rectangle||1.15 - 1.20||
1.10 - 1.14
1.21 - 1.30
1.08 - 1.09
1.31 - 1.50
Evaluating color in cushion cut diamonds is subjective. Keep in mind that many buyers may actually prefer the ever so slightly warmer colors of a G-H diamond over the cool colorlessness of a D-F diamond. In fact, most of the premium in price associated with cushion cut diamonds at the higher end of the color scale is driven by supply and demand; customers want the D-F color grades, and are willing to pay a premium to get them. In a world without diamond color grading, the price premium for higher grades would be much lower, as the actual differences in color are difficult to perceive.
The color chart below provides a general guide for evaluating color in cushion cut diamonds.
|< .50 ct.||D - G||H - I||J - K||L - M||> M|
|.51-1.0 ct.||D - F||G||H - I||J - K||> K|
|1.0-2.0 ct.||D - F||G - H||I - J||> J|
|> 2.0 ct.||D - F||G||H - I||> I|
|Fluoro||None||Faint - Med.||Strong||Very Strong|
Like color, evaluating clarity in cushion cut diamonds is subjective. GIA provides excellent help with their clarity grades. Still, it is important to understand that each customer will have a unique standard for clarity. Some may be perfectly comfortable with an inclusion as long as they cannot easily see it. Others may insist on a more technically flawless appearance. The clarity chart below provides a general guide for evaluating clarity in cushion cut diamonds.
|< .50 ct.||FL - VS2||SI1 - SI2||I1||I2||> I2|
|.51-1.0 ct.||FL - VS1||VS2 - SI1||SI2||I1 - I2||> I2|
|1.0-2.0 ct.||FL - VVS2||VS1 - VS2||SI1 - SI2||I1||> I1|
|> 2.0 ct.||FL - VVS2||VS1 - VS2||SI1||SI2||> SI2|
Questions about shape or other aspects of a diamond? Ask a diamond consultant for answers. A consultant will answer any questions you have, and if you like, search for diamonds on your behalf that match your criteria. Chat online, or send your request to email@example.com.
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