3 Carat Cushion Cut Platinum Lab Diamond Ring+ 3.0-Carat Cushion Lab Created Diamond

Lab diamonds are grown using two methods: HPHT (High Pressure High Temperature), which replicates the conditions deep in the earth, and CVD (Chemical Vapor Deposition), which builds the diamond carbon layer by layer from a gas. Both produce diamonds that are physically and chemically identical to mined stones.

Yes. Platinum develops a surface finish known as a patina from microscopic scratches that accumulate over time. Rather than losing metal the way softer metals do, platinum displaces it, preserving the ring's overall mass. Many wearers come to love the patina for its vintage, worn-in quality. A jeweler can polish it to a high shine if preferred. Three carats is the sweet spot for buyers who want something truly special. It is large enough to be remarkable, small enough to wear comfortably every day.

A 3 carat stone is well above average and a great choice for someone who wants their ring to look expensive and elevated without crossing into the ostentatious territory you hit at 4-5 carats. A comparable lab-grown 3 carat stone can be found for $3,000 to $8,000 depending on quality grades. The price difference at this size is extraordinary, which is one of the most compelling reasons couples choose lab diamonds for larger center stones.

A cushion cut has a square or rectangular outline with rounded corners, resembling a pillow or cushion shape. Unlike the precisely engineered round brilliant, cushion cuts come in several facet patterns: classic, modified brilliant, and crushed ice. Each produces a different sparkle character. Cushion cuts generally show more colorful fire and a softer, more romantic look than round brilliants.

Platinum is the most durable precious metal available, and its natural white color provides a permanent setting for a 3 carat cushion cut lab diamond. The cushion's broad facets at this size produce breathtaking light performance, and platinum's density gives the ring a substantial feel. Do Amore uses recycled platinum and conflict-free lab diamonds, with every sale funding one person's clean water through charity: water.