Collection: Engagement Rings 0.50ct - 1.00ct

A one carat old cut diamond typically measures around 6 to 6.5 millimeters across, though old cuts vary. Their taller crowns can make them look a touch smaller across the top but give bold, chunky sparkle. We list measurements for each stone.

Many are, particularly sturdy platinum and gold settings. Delicate filigree needs a gentler routine. We grade the condition of every ring and tell you honestly how it will hold up so you can match the ring to your lifestyle.

Antique stones were often cut before the modern carat was standardized, so weights can be estimated from measurements when a stone is set. We give the best available weight for each ring and note whether it is exact or estimated.