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Discover the Perfect Cut for Your Diamond

The quality of a round brilliant cut has to do with the way light enters and exits the stone. A well-cut diamond will reflect light more than any other type of shape (square, oval, pear and so on).

When you see a sparkle in your diamonds it is because they have been properly proportioned and set by hand to create maximum brilliance. This is why it’s important to invest in only higher-quality diamonds if you want them to reflect light properly as opposed to looking cloudy or dull like a lower-quality piece would look under bright lights.

Brilliance Through Precision

Nothing flaunts the splendour of a diamond like its cut. Top to bottom a diamond is comprised of a crown, girdle, and pavilion. If the pavilion angle is cut too deep, the stone will look dark. If it is too shallow, a diamond will look watery. Well-cut diamonds will exhibit a breathtaking performance of light.

Many diamond experts are convinced that the optimal brilliance of a diamond is determined by one specific set of proportions. But cutting a diamond to ideal proportions has a cost. In some cases half of the crystal’s weight is sacrificed. Consequently the diamond is sold at a relatively higher per-carat price. The standard round-cut is by far the most popular cut. It has 57- 58 small, flat, polished surfaces called facets which account for the breathtaking sparkle. Up to 60% of a diamond’s cost is based on the cut.

Shallow Cut

Ideal Cut

Deep Cut

Buyers Tip

(Proportions table of a Round Brilliant)

Table % 53 – 58%
Crown Angle ° 34 – 34.7
Crown Height % 14 – 16.3%
Pavilion Depth 42.8 – 43.2%
Girdle Thickness Thin to Medium (1.0 % to 3.0%) Medium to Slightly
Thick ( 1.7% – 4.5%)
Total Depth 58 – 62.3%
Polish/Symmetry Excellent – VG

Table % 52 – 60%
Crown Angle ° 33 – 35.1
Crown Height % 13.5 – 16.8%
Pavilion Depth 42.5 – 43.5%
Girdle Thickness Very Thin to Slightly Thick (0.4% to 4.5%) Thin to Slightly Thick (1.0% to 4.5%)
Total Depth 58.3 – 62.99%
Polish/Symmetry Excellent – VG

Table % 51.5 – 63%
Crown Angle ° 31.1 – 35.8
Crown Height % 11.6 – 17.9%
Pavilion Depth 42 – 44%
Girdle Thickness Very Thin To Slightly Thick (0.4% – 4.5%)
Total Depth 58.3% ->63%
Polish/Symmetry Excellent – Good

Table % 51 – 64%
Crown Angle ° 31.6 – 36.4
Crown Height % 11.1 – 18.1%
Pavilion Depth 41.5 – 44.9%
Girdle Thickness Very Thin To Thick (0.4% to 5.5%)
Total Depth 58.3% ->62%
Polish/Symmetry Good-Fair

Table % 50.5 – 67%
Crown Angle ° 30.1 – 37.9
Crown Height % 9.6 – 19.3%
Pavilion Depth 41 – 45.5%
Girdle Thickness Very Thin To Thick (0.4% to 5.5%)
Total Depth 58.3% – >63%
Polish/Symmetry Good-Fair

Table % 50 – 70%
Crown Angle ° 29.6 – 39.4
Crown Height % 8.5 – 20.5%
Pavilion Depth 40.5 – 46%
Girdle Thickness Very Thin To Very Thick (0.4% to 7.0%)
Total Depth 58.3% ->63%
Polish/Symmetry Poor

Table % 49 – 72%
Crown Angle ° 29 – 40.5
Crown Height % 7.8 – 21.8%
Pavilion Depth 38 – 48%
Girdle Thickness Extremely Thin To Extremely Thick (0.0% to > 7.0%)
Total Depth 58.3% – >63%
Polish/Symmetry Good-Fair

The 4 Cs Of Diamonds

Colour

The colour scale used for describing different types of diamonds goes from D through Z when referring specifically to white coloured stones (colourless), but actually ranges all colours from blueish…

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Clarity

This refers to how many flaws or inclusions (i.e., tiny imperfections) are present in your diamond; the fewer the better. A flawless stone is considered ideal because it has no visible marks…

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Carat

The size of your stone is perhaps the most well-known “C” in diamond buying terms. The bigger your stone is, the more expensive it will be—and big stones can add up quickly.

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