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Sapphires and diamonds with the same carat weight may vary in sizes. This is due to the different density of diamonds, sapphires and other gemstones. Sapphires tend to be heavier than diamonds, so a 1 carat sapphire is usually a little smaller in it’s dimension compared to a diamond.
Some sapphires can be calibrated, i.e. standardized in their dimensions for ease of use according to colour and shape. Bespoke cuts of sapphires for a specific setting or a piece of jewellery are truly possible and do not fit these standardizations. These custom cut sapphires can be more valuable than calibrated sapphires as well as for rare colours and larger carat sizes where individuality is always preferred over standardization.
In the case of a coloured gemstone such as sapphire, colour is an essential quality criterion. Diamonds are usually colourless and can therefore be cut in a standardized way. A skilled cutter cuts the sapphire in such a way as to bring out its ideal colour. Depending on the size of the raw sapphire, the natural characteristics such as inclusions and the colour centre, the cutter decides on the best possible shape, cut, number and width of facets and thus the final dimensions for a fine sapphire quality in perfect cut, completely individual and non-standard.
A standard size table is a handy tool for a first assessment. However, sapphire sizes or carat weights may vary depending on the depth of the sapphire. The rough stone tells the cutter the ideal depth for an even colour distribution, without a window and the best brilliance of the final faceted sapphire. Therefore please consider the following chart as just a rough point of reference.
All measurements are upon ideal cut proportions. Due to variance in height and shape of the pavilion of sapphires, the carat weight & dimensions can vary greatly.In case you need any help with dimensions and size please contact us
a hybrid of the princess and emerald cut, the Asscher cut is characterized by a distinct X in the gemstone’s table, cropped corners, and step-cuts to maximize a gem’s clarity. The name given by the Asscher brothers who developed the cut in 1902.
also referred to as a pillow cut because of the softness that the cut invokes, the cushion cut has gently rounded corners and maximizes the raw gem, while producing luster and brilliance.
originally designed to cut emeralds, the effect achieved with this cut is to emphasize the cut and color as color tends to show vividly with this cut. In this one, the shape is like a rectangle from the top with trimmed corners and light bounces brightly between the step-cuts.
also known as the navette cut, the marquise is cut to reflect the most light and offer maximum sparkle and depth of color. Perfect symmetry for the two end points is essential to ensure the stone sits properly in the setting to minimize chipping or breakage.
created in the late 1950s, the oval cut offers the brilliance and fire of round cut gemstones but in a more unique shape. The elongated silhouette also helps to create the illusion of a larger gemstone.
resembling a teardrop, the pear cut reflects light beautifully and allows color to showcase dramatically. As with the marquise cut, symmetry is extremely important for the integrity of the gemstone, and they require a 6-prong setting to offer the correct support.
this is the second most popular cut behind the round brilliant. A range of facets is acceptable in this cut, but no matter how many, it creates excellent sparkle. The square attributes of a princess cut also mean the gem retains more of it’s rough in the cutting process.
also known as the round brilliant cut, this is the reigning most popular cut. The facets are cut in a way to optimize the dispersion of light in a stone, this cut was once exclusively for diamonds.
The sapphire is a variety of the mineral corundum. Learn more facts about sapphires.
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