{"id":21143,"date":"2025-11-21T19:10:48","date_gmt":"2025-11-21T19:10:48","guid":{"rendered":"https:\/\/www.borsheims.com\/blog\/?p=21143"},"modified":"2025-12-11T15:53:54","modified_gmt":"2025-12-11T15:53:54","slug":"ct-vs-cttw-vs-tw-diamond-meaning","status":"publish","type":"post","link":"https:\/\/www.borsheims.com\/blog\/ct-vs-cttw-vs-tw-diamond-meaning\/","title":{"rendered":"CT vs CTTW vs TW Diamond Meaning"},"content":{"rendered":"Reading Time: <\/span> 2<\/span> minutes<\/span><\/span>

[et_pb_section fb_built=”1″ _builder_version=”4.24.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_row _builder_version=”4.24.0″ _module_preset=”default” custom_margin=”-19px|auto||auto||” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.24.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.24.0″ _module_preset=”default” text_font_size=”16px” custom_margin=”-13px|||||” global_colors_info=”{}”]<\/p>\n

Shopping for<\/span>\u00a0<\/span>diamonds comes with\u00a0<\/span><\/span>its<\/span>\u00a0<\/span>own language. CT, CTTW and TW<\/span><\/span>\u00a0m<\/span>ight<\/span>\u00a0<\/span>look similar,<\/span>\u00a0<\/span>but<\/span>\u00a0<\/span><\/span>each one\u00a0<\/span><\/span>represents<\/span>\u00a0<\/span><\/span>a<\/span>\u00a0<\/span><\/span>different way<\/span>\u00a0<\/span>of expressing a\u00a0<\/span><\/span>diamond\u2019s<\/span>\u00a0<\/span>weight<\/span>.\u00a0<\/span><\/span>Understanding these labels\u00a0<\/span>helps ensure<\/span>\u00a0<\/span><\/span>you\u2019re<\/span>\u00a0<\/span>getting the sparkle <\/span>and the\u00a0<\/span><\/span>size <\/span>you expect.\u00a0<\/span><\/span>Let\u2019s<\/span>\u00a0<\/span>break down what each of these terms means and how they affect the jewelry you buy.<\/span><\/span>\u00a0<\/span><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.24.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.24.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.24.0″ _module_preset=”default” text_font_size=”16px” global_colors_info=”{}”]<\/p>\n

What\u00a0<\/span>Does Diamond<\/span>\u00a0<\/span>C<\/span>T<\/span>\u00a0Mean<\/span>?<\/span><\/span>\u00a0<\/span><\/span><\/h2>\n

When you see CT\u00a0online or on a jewelry label,\u00a0it\u2019s\u00a0simply short for carat:\u00a0the standard\u00a0unit\u00a0to measure gemstone\u00a0weight<\/span>.\u00a0<\/span>To give you an idea of scale,\u00a0<\/span>1 carat is just 0.2 grams.<\/span>\u00a0<\/span><\/p>\n

When a piece of jewel<\/span>ry lists\u00a0CT,\u00a0it\u2019s referring\u00a0to the\u00a0weight of one individual diamond.\u00a0So\u00a0if a ring is described as having a \u201c1\u00a0ct\u00a0diamond,\u201d that means\u00a0one single stone\u00a0weighs\u00a01 carat, not a collection of stones adding up to that weight.<\/span>\u00a0<\/span><\/p>\n

One thing to keep in mind: carat weight\u00a0does influence\u00a0how large a diamond looks, but\u00a0it\u2019s\u00a0not\u00a0the whole\u00a0picture.\u00a0Two diamonds can weigh the exact same amount yet look different in size depending on\u00a0how\u00a0they\u2019re\u00a0cut. A well-cut diamond can appear bigger and brighter than a poorly cut one, even if both are 1\u00a0ct.<\/span>\u00a0<\/span><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.24.0″ _module_preset=”default” width=”43%” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.24.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/www.borsheims.com\/blog\/wp-content\/uploads\/2025\/11\/V205429-V168922-V192182-1506×830-1.jpg” alt=”Solitaire diamond rings blog” title_text=”V205429, V168922, V192182-1506×830″ align=”center” _builder_version=”4.24.0″ _module_preset=”default” width=”93.7%” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.24.0″ _module_preset=”default” custom_margin=”17px|auto||auto||” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.24.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.24.0″ _module_preset=”default” text_font_size=”16px” global_colors_info=”{}”]<\/p>\n

What\u00a0<\/span>Does Diamond<\/span>\u00a0CTTW<\/span>\u00a0Mean<\/span>?<\/span><\/span>\u00a0<\/span><\/span><\/span><\/span><\/h2>\n

CTTW<\/span>\u00a0stands for\u00a0<\/span>c<\/span>arat total weight<\/span>, and\u00a0<\/span><\/span>it\u2019s<\/span>\u00a0a way of showing the combined weight of all the diamonds in a piece of jewelry.<\/span><\/span>\u00a0<\/span><\/span><\/p>\n

For example,<\/span>\u00a0<\/span>let\u2019s<\/span>\u00a0say\u00a0<\/span>you\u2019re<\/span>\u00a0looking at a halo engagement ring listed as 1 CTTW<\/span>. The center diamond might weigh 0.70\u00a0<\/span>ct<\/span>, while the smaller accent stones around it add up to 0.30 ct. Together, they total 1.00 CTTW. So even though the ring\u00a0<\/span>says<\/span>\u00a0\u201c1 carat,\u201d no single diamond\u00a0<\/span>actually weighs<\/span>\u00a01 carat<\/span>\u2014<\/span>it<\/span>\u2019s<\/span>\u00a0all the stones combined.<\/span><\/span>\u00a0<\/span><\/span><\/p>\n

CTTW is\u00a0most commonly used\u00a0for\u00a0pieces with multiple stones, like:<\/span>\u00a0<\/span><\/p>\n