{"product_id":"1-04ct-d-vs1-round-lab-grown-diamond-7e528","title":"1.04 ct D VS1 Round Lab-Grown Diamond","description":"\u003cp\u003e\u003cstrong\u003eGrade score 98.1 · Exceptional\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eCrown 35.2° and pavilion 40.7° are properly complementary.\u003c\/b\u003e At a 56.0% table a 35.2° crown calls for 40.64° of pavilion and this stone delivers 40.7° — off by 0.06°. Light entering the crown is turned back through the table rather than leaking out of the pavilion. This is the one thing a round brilliant must get right, and it does. It sits on the locus Sasián \u003ci\u003eet al.\u003c\/i\u003e (2007) identified as the best-performing set, and that Cowing (2005) calls the axis of Excellent.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eStrongly fire-biased\u003c\/b\u003e (lean 100\/100). The tall crown disperses light into coloured flashes rather than returning it white. It comes alive under point sources — spotlights, candlelight, direct sun, restaurant lighting — and goes comparatively quiet under overcast sky or office panels. It will photograph worse than it looks in person: a still frame cannot capture dispersion in motion.\u003c\/p\u003e\u003cp\u003eFrom the certificate text: comments state \u003cb\u003eAs Grown\u003c\/b\u003e — no indication of post-growth treatment.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eTop tier\u003c\/b\u003e — score 98.1. The geometry is as strong as certificate numbers can show: crown and pavilion in proper complement, the table where it belongs. This is the standard haus1919 curates to, and this stone clears it with room to spare. What remains — inclusion position and optical symmetry — is confirmed on the actual stone, which no certificate can show.\u003c\/p\u003e\u003cp\u003e\u003cem\u003e3D ray-traced simulation from certificate proportions. Not a photo of this stone. Accurate representation of optical performance, but it does not account for facet variations and does not show clarity or inclusions. \u003ca href=\"\/pages\/questions-and-method\"\u003eSee more\u003c\/a\u003e.\u003c\/em\u003e\u003c\/p\u003e","brand":"haus1919","offers":[{"title":"Default Title","offer_id":68178274517215,"sku":"H19-7E528","price":760.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0832\/2590\/3327\/files\/studio_211e37f9-b0ba-450b-b6c0-4a140ac0dc28.webp?v=1792515049","url":"https:\/\/haus1919.com\/products\/1-04ct-d-vs1-round-lab-grown-diamond-7e528","provider":"Haus1919","version":"1.0","type":"link"}