![]() ![]() ![]() Table size: Length and width of a diamond’s table (top surface area).Here are the 10 main components that impact diamond proportion: How well a diamond interacts with light is affected by the size, shape and angle of each facet. There are several factors that impact a diamond’s proportions, including the table size and total depth. That’s why it’s essential to find a diamond with ideal cut proportions in each area. The table, depth and width all combine to impact how well a diamond refracts and reflects light. A diamond with too high of a depth percentage loses light out the bottom of the diamond, making it appear dull. ![]() A diamond with a lower depth percentage usually appears larger due to its increased width, but often creates a dark appearance as the diamond doesn’t reflect light as well.For example, if a diamond measures 3mm in depth and 4mm in width, the depth percentage is 75%. For instance, if a diamond has a length of 5mm and a width of 3mm, the length to width ratio is 1.67.ĭepth percentage is calculated by dividing the depth of the diamond (its height) by its width. Length to width ratio is calculated by dividing the length of the diamond by its width.Width is primarily used to determine the length to width ratio which denotes how proportionate the diamond is for its intended shape (i.e.Width is calculated by measuring from one end of the girdle (the diameter at its widest point) to the opposite end of the girdle. If the table percentage is too high, light doesn’t reflect off of the diamond’s crown angles and facets-leaving the diamond looking dull.If the table percentage is too low, light gets trapped inside the diamond and leaks out the sides of the diamond (instead of reflecting back through the table).For example, if the table facet is 3mm wide and the diameter is 5mm, the table percentage is 60%. Table percentage is calculated by dividing the table width (top surface area) by the diameter. That’s why we suggest spending a good amount of your engagement ring budget on Cut quality, over other features like diamond color and diamond clarity. Throughout our years of experience, we find that the higher price is worth it because cut quality impacts the diamond’s beauty more than any other feature. In other words, if a diamond’s proportions are poor, the diamond looks dull and lifeless.īecause a diamond with ideal cut proportions offers more brilliance, the price also tends to be higher for these diamonds. If a diamond is cut too shallow or too deep, light is lost out the sides and doesn’t reflect as well back to the eye. Mike followed that up by spending years buying and selling diamonds on the wholesale market as well as selling tens of millions of dollars worth of diamonds to diamond retailers. Mike started from the bottom, sorting and evaluating hundreds of thousands of diamonds to learn every facet (pun intended) of diamond quality and value. The author of this article, our CEO, Mike Fried has over 20 years of experience in the diamond industry. To help you with the diamond buying process we lean on our expertise and experience. ![]()
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