The 4Cs and how to choose a quality diamond
Choosing a diamond is a subtle balance between emotion and expertise.
Behind every sparkle lies a story, shaped by four essential criteria that define a diamond’s beauty: Cut, Color, Clarity, and Carat. Known as the 4Cs, they help you understand what makes a diamond truly exceptional.
At AGUAdeORO, we work exclusively with lab-grown diamonds, graded according to the same standards as mined diamonds, with the added benefit of an ethical and sustainable origin.
We carefully select every stone, so you do not need to be an expert to make the right choice. We also believe in transparency and in your ability to choose with confidence.
Cut
The cut is what gives a diamond its brilliance. It's not the shape (round, oval, etc.), but the way its facets reflect light. A well-cut diamond will catch the light with every movement. For us, this is the most important criterion: the cut brings the stone to life.
Color
Diamonds are graded from D (colorless) to Z (yellow or light brown). The closer the color is to D, the rarer and more luminous the stone. At AGUAdeORO, we offer cultured diamonds in the best color categories, for pure, luminous, timeless brilliance.
Clarity
Most diamonds have small inclusions - natural marks formed over time. Clarity indicates how visible these marks are. Flawless diamonds are very rare. That's why we only select stones of excellent purity, with inclusions invisible to the naked eye.
Carat
Carat is a measure of weight, not size. A higher carat may result in a larger diamond, but proportion and cut remain essential. At AGUAdeORO, we help you find the right balance between carat and cut, so that your stone is as beautiful as it is comfortable to wear.
Whether you dream of a delicate sparkle or a bold piece of jewelry, we accompany you attentively at every step. Every diamond comes with its certificate and reflects our complete commitment to ethical and responsible luxury.
A diamond is much more than a gemstone: it is a promise.
And we are here to help you find the one that is right for you.

