{"title":"3 Carat Lab-Grown Diamonds","description":"\u003cp\u003eDiscover IGI-certified lab-grown diamonds in the 3-carat range, from 3.00 to 3.99 carats. Each listing shows the exact weight, shape, color, clarity and grading report so you can compare stones with confidence.\u003c\/p\u003e\u003cp\u003eCarat weight is only part of a diamond’s appearance: shape and measurements also affect how it looks in a setting. \u003ca href=\"\/pages\/create-custom-jewelry\"\u003eExplore a custom engagement ring\u003c\/a\u003e with CMR Jewelers or \u003ca href=\"\/collections\/lab-grown-diamonds\"\u003ebrowse all lab-grown diamonds\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eIn-stock stones ship within one business day. Images are representative illustrations, not photographs of the individual stones.\u003c\/p\u003e","products":[{"product_id":"lab-grown-diamond-lg737546486","title":"3.57 ct Round Lab-Grown Diamond — E VVS2 — LG737546486","description":"\u003cp\u003eOne unique loose lab-grown diamond. Setting sold separately.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eShape: Round\u003c\/li\u003e\n\u003cli\u003eCarat weight: 3.57 ct\u003c\/li\u003e\n\u003cli\u003eColor: E\u003c\/li\u003e\n\u003cli\u003eClarity: VVS2\u003c\/li\u003e\n\u003cli\u003eMeasurements: 9.73–9.79 × 6.06 mm\u003c\/li\u003e\n\u003cli\u003eCut grade: Ideal\u003c\/li\u003e\n\u003cli\u003ePolish: Excellent\u003c\/li\u003e\n\u003cli\u003eSymmetry: Excellent\u003c\/li\u003e\n\u003cli\u003eFluorescence: None\u003c\/li\u003e\n\u003cli\u003eGrowth method: CVD\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.igi.org\/verify-your-report\/?r=LG737546486\" target=\"_blank\" rel=\"noopener\"\u003eView IGI report LG737546486\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eImages are AI-generated representative illustrations, not photographs of this diamond. On-hand images show approximate size; hand sizes vary.\u003c\/p\u003e\u003cp\u003eOnline inventory differs from in-store inventory. All online orders are shipped.\u003c\/p\u003e","brand":"CMR Jewelers","offers":[{"title":"Default Title","offer_id":67589469733138,"sku":"LG737546486","price":950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/8639\/8226\/files\/cmr-lab-LG737546486-closeup.png?v=1790808040"},{"product_id":"lab-grown-diamond-lg809617900","title":"3.59 ct Princess Lab-Grown Diamond — F VVS2 — LG809617900","description":"\u003cp\u003eOne unique loose lab-grown diamond. Setting sold separately.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eShape: Princess\u003c\/li\u003e\n\u003cli\u003eCarat weight: 3.59 ct\u003c\/li\u003e\n\u003cli\u003eColor: F\u003c\/li\u003e\n\u003cli\u003eClarity: VVS2\u003c\/li\u003e\n\u003cli\u003eMeasurements: 8.42 × 8.40 × 5.93 mm\u003c\/li\u003e\n\u003cli\u003ePolish: Excellent\u003c\/li\u003e\n\u003cli\u003eSymmetry: Excellent\u003c\/li\u003e\n\u003cli\u003eFluorescence: None\u003c\/li\u003e\n\u003cli\u003eGrowth method: CVD\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.igi.org\/verify-your-report\/?r=LG809617900\" target=\"_blank\" rel=\"noopener\"\u003eView IGI report LG809617900\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eImages are AI-generated representative illustrations, not photographs of this diamond. On-hand images show approximate size; hand sizes vary.\u003c\/p\u003e\u003cp\u003eOnline inventory differs from in-store inventory. All online orders are shipped.\u003c\/p\u003e","brand":"CMR Jewelers","offers":[{"title":"Default Title","offer_id":67589470028050,"sku":"LG809617900","price":1000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/8639\/8226\/files\/cmr-lab-LG809617900-closeup.png?v=1790808040"},{"product_id":"lab-grown-diamond-lg726566949","title":"3.06 ct Princess Lab-Grown Diamond — F VS1 — LG726566949","description":"\u003cp\u003eOne unique loose lab-grown diamond. Setting sold separately.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eShape: Princess\u003c\/li\u003e\n\u003cli\u003eCarat weight: 3.06 ct\u003c\/li\u003e\n\u003cli\u003eColor: F\u003c\/li\u003e\n\u003cli\u003eClarity: VS1\u003c\/li\u003e\n\u003cli\u003eMeasurements: 8.15 × 8.02 × 5.43 mm\u003c\/li\u003e\n\u003cli\u003ePolish: Excellent\u003c\/li\u003e\n\u003cli\u003eSymmetry: Excellent\u003c\/li\u003e\n\u003cli\u003eFluorescence: None\u003c\/li\u003e\n\u003cli\u003eGrowth method: CVD\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.igi.org\/verify-your-report\/?r=LG726566949\" target=\"_blank\" rel=\"noopener\"\u003eView IGI report LG726566949\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eImages are AI-generated representative illustrations, not photographs of this diamond. On-hand images show approximate size; hand sizes vary.\u003c\/p\u003e\u003cp\u003eOnline inventory differs from in-store inventory. All online orders are shipped.\u003c\/p\u003e","brand":"CMR Jewelers","offers":[{"title":"Default Title","offer_id":67589470257426,"sku":"LG726566949","price":800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/8639\/8226\/files\/cmr-lab-LG726566949-closeup.png?v=1790808040"},{"product_id":"lab-grown-diamond-lg816640308","title":"3.01 ct Radiant Lab-Grown Diamond — F VVS2 — LG816640308","description":"\u003cp\u003eOne unique loose lab-grown diamond. Setting sold separately.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eShape: Radiant\u003c\/li\u003e\n\u003cli\u003eCarat weight: 3.01 ct\u003c\/li\u003e\n\u003cli\u003eColor: F\u003c\/li\u003e\n\u003cli\u003eClarity: VVS2\u003c\/li\u003e\n\u003cli\u003eMeasurements: 10.29 × 7.13 × 4.72 mm\u003c\/li\u003e\n\u003cli\u003ePolish: Excellent\u003c\/li\u003e\n\u003cli\u003eSymmetry: Excellent\u003c\/li\u003e\n\u003cli\u003eFluorescence: None\u003c\/li\u003e\n\u003cli\u003eGrowth method: CVD\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.igi.org\/verify-your-report\/?r=LG816640308\" target=\"_blank\" rel=\"noopener\"\u003eView IGI report LG816640308\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eImages are AI-generated representative illustrations, not photographs of this diamond. On-hand images show approximate size; hand sizes vary.\u003c\/p\u003e\u003cp\u003eOnline inventory differs from in-store inventory. All online orders are shipped.\u003c\/p\u003e","brand":"CMR Jewelers","offers":[{"title":"Default Title","offer_id":67589470355730,"sku":"LG816640308","price":875.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/8639\/8226\/files\/cmr-lab-LG816640308-closeup.png?v=1790808040"},{"product_id":"lab-grown-diamond-lg823676102","title":"3.05 ct Round Lab-Grown Diamond — F VS1 — LG823676102","description":"\u003cp\u003eOne unique loose lab-grown diamond. Setting sold separately.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eShape: Round\u003c\/li\u003e\n\u003cli\u003eCarat weight: 3.05 ct\u003c\/li\u003e\n\u003cli\u003eColor: F\u003c\/li\u003e\n\u003cli\u003eClarity: VS1\u003c\/li\u003e\n\u003cli\u003eMeasurements: 9.23 – 9.30 × 5.70 mm\u003c\/li\u003e\n\u003cli\u003eCut grade: Ideal\u003c\/li\u003e\n\u003cli\u003ePolish: Excellent\u003c\/li\u003e\n\u003cli\u003eSymmetry: Excellent\u003c\/li\u003e\n\u003cli\u003eFluorescence: None\u003c\/li\u003e\n\u003cli\u003eGrowth method: CVD\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.igi.org\/verify-your-report\/?r=LG823676102\" target=\"_blank\" rel=\"noopener\"\u003eView IGI report LG823676102\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eImages are AI-generated representative illustrations, not photographs of this diamond. On-hand images show approximate size; hand sizes vary.\u003c\/p\u003e\u003cp\u003eOnline inventory differs from in-store inventory. All online orders are shipped.\u003c\/p\u003e","brand":"CMR Jewelers","offers":[{"title":"Default Title","offer_id":67589470585106,"sku":"LG823676102","price":790.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/8639\/8226\/files\/cmr-lab-LG823676102-closeup.png?v=1790808040"},{"product_id":"lab-grown-diamond-lg823675644","title":"3.07 ct Oval Lab-Grown Diamond — F VS1 — LG823675644","description":"\u003cp\u003eOne unique loose lab-grown diamond. Setting sold separately.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eShape: Oval\u003c\/li\u003e\n\u003cli\u003eCarat weight: 3.07 ct\u003c\/li\u003e\n\u003cli\u003eColor: F\u003c\/li\u003e\n\u003cli\u003eClarity: VS1\u003c\/li\u003e\n\u003cli\u003eMeasurements: 11.48 × 8.18 × 5.16 mm\u003c\/li\u003e\n\u003cli\u003ePolish: Excellent\u003c\/li\u003e\n\u003cli\u003eSymmetry: Excellent\u003c\/li\u003e\n\u003cli\u003eFluorescence: None\u003c\/li\u003e\n\u003cli\u003eGrowth method: CVD\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.igi.org\/verify-your-report\/?r=LG823675644\" target=\"_blank\" rel=\"noopener\"\u003eView IGI report LG823675644\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eImages are AI-generated representative illustrations, not photographs of this diamond. On-hand images show approximate size; hand sizes vary.\u003c\/p\u003e\u003cp\u003eOnline inventory differs from in-store inventory. All online orders are shipped.\u003c\/p\u003e","brand":"CMR Jewelers","offers":[{"title":"Default Title","offer_id":67589470814482,"sku":"LG823675644","price":855.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/8639\/8226\/files\/cmr-lab-LG823675644-closeup.png?v=1790808040"}],"url":"https:\/\/cmrjewelers.com\/collections\/3-carat-lab-grown-diamonds.oembed","provider":"CMR Jewelers","version":"1.0","type":"link"}