Stephanie Gottlieb launches lab-grown lines for everyday self-expression
Stephanie Gottlieb turned lab-grown diamonds into everyday self-styling, with 20 Casual Carats rings starting at $675.

Stephanie Gottlieb launched two lab-grown lines, Lola and Casual Carats, to push diamond jewelry toward daily styling rather than milestone-only buying. In a July 13 Q&A, the New York City designer drew the line plainly: “Natural diamonds are forever” and “lab-grown diamonds are for right now.”
Casual Carats is the more playful of the two, and the one that makes the shift feel especially visible. Offered through Stephanie Gottlieb as a separate brand, it includes 20 ring styles in round, pear, emerald and heart cuts, all set in 14k yellow gold on colorful silicone bands. Prices run from $675 for round styles to $1,850 for emerald cuts, with pear versions at $975 and heart rings at $895, a range that places the collection squarely in the realm of stackable, lower-stakes self-purchase rather than bridal centerpiece. Stephanie Gottlieb’s site now places Casual Carats and Lola alongside bridal, bespoke and personalization categories, underlining that lab-grown stones have become another merchandising lane, not a replacement for the house’s core business.

Lola, meanwhile, sits under SG Fine and feels more finely tuned to Gottlieb’s fashion jewelry vocabulary. The line uses drilled lab-grown diamonds set in 14k yellow or white gold, a cleaner, more fluid construction than the prong-set look associated with classic engagement jewelry. JCK described the eight-piece collection as four necklaces, three earrings and a ring, with prices from $1,065 to $7,750, and the brand’s product page highlights Lola drilled diamond linear earrings with 1.6 to 1.8 carats total weight. If Casual Carats reads like a stackable weekend piece, Lola is the sharper, sleeker sibling: still fun, but with enough polish to sit closer to fine jewelry.

The timing fits a market already recalibrated by lab-grown demand. BriteCo found lab-grown diamonds accounted for more than 45% of U.S. engagement ring purchases by 2024, while Tenoris data cited by National Jeweler put them at 14% of the U.S. jewelry market that same year. De Beers said in June that synthetic lab-grown diamonds reached 15% of U.S. independent jeweler sales in 2025, yet natural diamonds remained the most desired jewelry product and non-bridal occasions made up three-quarters of U.S. demand. GIA, meanwhile, has said analysts projected lab-grown stones would reach 20% of all diamonds on the market by 2025, and that it now receives more CVD-grown diamond submissions in a day than it once saw in a full year. Gottlieb is betting that the category’s newest power is not just scale, but mood: self-expression, bought without a milestone attached.
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