Buying a diamond should feel exciting, not overwhelming. Here is everything you need to choose with confidence — starting with the famous 4Cs.
The 4Cs
Cut
Cut is how well a diamond’s facets interact with light, and it is the single biggest factor in sparkle. A beautifully cut diamond returns light as brilliance, fire and scintillation. Rings Of USA offers only Excellent and Ideal cut grades.
Colour
Diamond colour is graded D (completely colourless) through Z (light yellow). The less colour, the rarer the stone. Our collection focuses on the D–H range, which appears white to the eye, especially once set.
Clarity
Clarity measures the tiny natural marks (inclusions) within a diamond. Grades run from Flawless (FL) to Included (I). We select eye-clean VVS and VS stones, where inclusions are invisible without magnification.
Carat
Carat is the weight of a diamond, not its size. Two diamonds of equal carat can look very different depending on their cut. We help you balance carat against cut, colour and clarity to get the most beautiful stone for your budget.
Diamond Shapes
Shape is about personality. Round maximises sparkle; emerald is elegant and understated; oval and pear flatter the finger. There is no wrong choice — only your choice.
Round Brilliant
Oval
Princess
Emerald
Cushion
Marquise
Pear
Radiant
Choosing Your Metal
Platinum
Naturally white, hypoallergenic and the most durable — ideal for everyday rings.
18ct White Gold
Bright white with a rhodium finish; a lighter, more affordable alternative to platinum.
18ct Yellow Gold
Warm, classic and timeless — flatters warmer skin tones beautifully.
18ct Rose Gold
Romantic and contemporary, with a soft pink hue from its copper content.
Finding the Right Ring Size
Not sure of the size? Order our complimentary ring sizer, or borrow a ring they already wear and we’ll match it. All Rings Of USA engagement rings include one free resize within the first 60 days.
