{"id":76,"date":"2010-03-22T01:27:23","date_gmt":"2010-03-22T05:27:23","guid":{"rendered":"http:\/\/advisor.yenmedia.ca\/2010\/03\/22\/cut\/"},"modified":"2024-01-16T11:42:04","modified_gmt":"2024-01-16T15:42:04","slug":"cut-grade","status":"publish","type":"page","link":"https:\/\/diamondadvisor.ca\/diamond-education\/cut-grade\/","title":{"rendered":"Diamond Cut Grade"},"content":{"rendered":"
[vc_row css=”.vc_custom_1587003472530{margin-bottom: 50px !important;}”][vc_column]
[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=”.vc_custom_1587327844299{margin-bottom: 50px !important;}”][vc_column][vc_column_text]<\/p>\n
Before we get into the science around cuts and how they affect light performance, have a look at the 3 diamonds below.\u00a0 Each diamond has a different cut and exhibits a different behaviour in terms of sparkle and liveliness.\u00a0 Click on any image and use the 360 view to see how each diamond performs.[\/vc_column_text][vc_row_inner][vc_column_inner width=”1\/3″][vc_single_image image=”48556″ img_size=”large” onclick=”custom_link” img_link_target=”_blank” link=”https:\/\/www.jamesallen.com\/loose-diamonds\/round-cut\/1.01-carat-h-color-vs2-clarity-good-cut-sku-8121499?data1=image-photo” css=”.vc_custom_1588568877885{margin-bottom: 10px !important;}”][vc_column_text]<\/p>\n
Shallow Cut<\/a><\/p>\n [\/vc_column_text][\/vc_column_inner][vc_column_inner width=”1\/3″][vc_single_image image=”48557″ img_size=”large” onclick=”custom_link” img_link_target=”_blank” link=”https:\/\/www.jamesallen.com\/loose-diamonds\/round-cut\/1.02-carat-i-color-vs2-clarity-excellent-cut-sku-8279494?data1=image-photo” css=”.vc_custom_1588568731017{margin-bottom: 10px !important;}”][vc_column_text]<\/p>\n Ideal Cut<\/a><\/p>\n [\/vc_column_text][\/vc_column_inner][vc_column_inner width=”1\/3″][vc_single_image image=”48558″ img_size=”large” onclick=”custom_link” img_link_target=”_blank” link=”https:\/\/www.jamesallen.com\/loose-diamonds\/round-cut\/1.00-carat-h-color-vs2-clarity-good-cut-sku-7800599?data1=image-photo” css=”.vc_custom_1588568821098{margin-bottom: 10px !important;}”][vc_column_text]<\/p>\n Deep Cut<\/a><\/p>\n [\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_column_text]The shallow cut diamond is larger (at 6.64 x 6.55mm) but looks glassy and lifeless without any sparkle.\u00a0 The deep cut diamond is smaller (6.17 x 6.21mm) and exhibits a lack of sparkle in the center.\u00a0 The ideal cut diamond is what we’re after with brilliance and sparkle all around.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\n A diamond\u2019s cut greatly influences its allure and brilliance. A well cut diamond exemplifies a high degree of brilliance, sparkle and liveliness thanks to a high percentage of light being returned from the pavillion<\/a> (bottom of the diamond) back to your eyes. Cut poorly, the same diamond may exhibit less luminosity and appear lifeless due to light being leaked.[\/vc_column_text][\/vc_column][\/vc_row][vc_row bg_type=”bg_color” css=”.vc_custom_1587173347629{padding-right: 50px !important;padding-left: 50px !important;}”][vc_column][vc_row_inner][vc_column_inner width=”1\/3″] When a diamond has a high quality cut (ideal cut), incident light will enter the stone through the table<\/a> and crown<\/a> as shown above and travel toward the pavilion where it reflects from one side to the other before bouncing back out of the diamond\u2019s table toward you. This phenomenon is referred to as \u201clight return\u201d which affects a diamond\u2019s brightness, brilliance, and dispersion. Any light-leakage caused by poor cutting, will reduce the amount of light returned, and how good the diamond looks.<\/p>\n When jewelers judge the quality of a diamond cut, a lot of times they rate it as “The most important of the 4 Cs\u201d.\u00a0 Diamond cut is regarded so highly as it actually influences the other C’s.<\/p>\n Here’s why:<\/p>\n What this means for the average shopper is that buying a diamond with a high quality cut will yield you a high quality diamond, regardless if the color or carat weight are of a lesser grade.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\n The way a diamond is cut is primarily dependent upon (1) the original shape of the rough stone, (2) location of the inclusons and flaws<\/a> to be eliminated, and (3) the preservation of\u00a0 carat weight<\/a>.\u00a0 Diamond cutters always apply a cut which will maximize the value of the diamond when completed.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\n A diamond\u2019s cut is evaluated by trained graders who assess a stone\u2019s symmetry and proportions and assign a cut grade based on how closely the diamond matches the particular \u201cideal\u201d cut used as a benchmark. The closer the diamond matches to the ideal benchmark, the higher the cut grade.<\/p>\n Cut grades vary from retailer to retailer which in turn creates the need for strict standards set forth by the various gemstone certification institutes such as AGS<\/a> and GIA<\/a>.<\/p>\n Diamonds are assigned a cut grade based on a number of factors namely proportion, craftsmanship and light performance.\u00a0 No standard cut grading scheme exists so grading scales will vary between retailers and institutions.\u00a0 The most common cut grade used are GIA and AGS and are as follows:<\/span><\/p>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row bg_type=”bg_color” bg_color_value=”rgba(30,115,190,0.04)”][vc_column][vc_column_text]<\/p>\n Many online diamond retailers have their own branded ideal cut diamonds<\/em>. As each retailer will have their own criteria into what passes for their signature ideal, it is difficult to compare one brands signature ideal to another brands signature ideal. For this reason, always refer back to the cut grade on the certification (GIA \/ AGS).<\/p>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\n For clarification, diamond cut grade is not to be confused with a diamond\u2019s SHAPE (round brilliant, oval, princess,). Diamond cut grading rather refers to the symmetry, polish, and overall proportions of a diamond.\u00a0Cut does not refer to shape (pear<\/a>, oval<\/a>), but rather the outward appearance, cut of the facets<\/a>, symmetry<\/a>, polish and all other aspects of a diamond that makes it scintillate.<\/p>\n The cut of a diamond greatly impacts a diamond brilliance, this means if it is cut poorly, it will be less luminous.\u00a0 A diamond cut too shallow lacks in brilliance giving it a very cold appearance.\u00a0 In contrary, diamonds cut too deep will appear dark.[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=”.vc_custom_1587004322555{margin-bottom: 50px !important;}”][vc_column][vc_column_text]<\/p>\n When starting your search for a loose diamond, don’t be skimpy on cut.\u00a0 We recommend not going below a cut grade ‘Ideal (0)’ for AGS and ‘Excellent’ for GIA.\u00a0 The reason is this: a well cut diamond will appear larger than a poorly cut diamond.\u00a0 What this means is that a .9 carat diamond with Excellent cut will appear larger than a 1-carat diamond with good cut.\u00a0 This means money saved (as there is usually a premium on 1-carat diamonds and above).[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column] <\/p>\n Cut – Precision and Brillance<\/p>\n Cut is pivotal in giving a diamond it’s brilliance and sparkle and refers to the overall proportions of a diamond. A precise and ideal cut diamond will return the maximum amount of light that enters it, making it appear lively and desirable.<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":97,"menu_order":1,"comment_status":"open","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"yoast_head":"\nWhy is a diamond’s cut so important?<\/h3>\n<\/div>\n
Too Shallow<\/h6><\/div><\/div>[\/vc_column_inner][vc_column_inner width=”1\/3″]
Perfectly Proportioned<\/h6><\/div><\/div>[\/vc_column_inner][vc_column_inner width=”1\/3″]
Too Deep<\/h6><\/div><\/div>[\/vc_column_inner][\/vc_row_inner][vc_row_inner][vc_column_inner width=”1\/3″][vc_single_image image=”2534″ alignment=”center”][\/vc_column_inner][vc_column_inner width=”1\/3″][vc_single_image image=”2535″ alignment=”center”][\/vc_column_inner][vc_column_inner width=”1\/3″][vc_single_image image=”2536″ alignment=”center”][\/vc_column_inner][\/vc_row_inner][vc_row_inner][vc_column_inner width=”1\/3″]
\n
\n
\n
Why different diamond cut grades exist<\/h3>\n
How diamond cut grades are assigned<\/h3>\n
\n
\n
\n
Branded Ideal Cuts from popular retailers:<\/h4>\n
<\/h4>\n
\n
\n
Diamond Cut vs. Diamond Shape<\/h3>\n
Final Remarks<\/h3>\n
\n