How to choose purity and carats for a personalized piece of jewelry

Choosing a diamond for one's custom jewelry piece is an exciting time, but it can seem complex. Often, one is faced with tables, acronyms and certificates that risk turning a dream into a technical analysis. The truth? Numbers are important, but they are not everything.

As craftsmen and designers, our approach goes beyond simply reading a certificate. We guide you in finding the perfect balance, a meeting point between the objective beauty of the gemstone, the design of the jewelry and your personal desire. This is not a gemology class, but a dialogue to help you make the smartest and most emotional choice.

1. Purity (Clarity): Beyond the Magnifying Glass.

The clarity of a diamond refers to the presence of internal inclusions or surface imperfections. The GIA international scale is the standard: it starts at IF (Internally Flawless, internally pure) and goes down to I (Included, inclusions visible to the naked eye).

International diamond clarity scale of the GIA

The common approach is that it is necessary to aim for the highest grade possible. This often leads to sacrificing other aspects, such as carat, for a level of purity whose difference is only visible with a 10-magnification jeweler's loupe.

The Unique Perspective of Risivi: The Concept of “Eye-Clean”

True luxury is not buying an IF diamond at all costs, but choosing intelligently. The fundamental question we pose to our clients is: “Is the inclusion visible to the naked eye once the stone is mounted in the jewel?“.

• The Value of Eye-Clean: A diamond graded VS (Very Slightly Included) or even a SI1 (Slightly Included 1) carefully selected by our gemologist is almost always “eye-clean.” To the naked eye, it will appear identical to a VVS or IF diamond, but at a significantly different price. This strategic choice frees up budget to invest where the visual impact is greatest: carat or intricate workmanship.
• Design is Sovereign: The purity required depends on the design of the jewelry. A solitaire ring with a large emerald-cut diamond, with its large “windows,” requires a high purity grade (typically VS1 or higher). In contrast, in a tennis bracelet or ring with a pavé of brilliant-cut diamonds, where each stone is smaller and the brilliance is collective, an SI grade is often more than adequate and absolutely indistinguishable.

2. The Carats (Carat o ct): Beyond the Simple Dimension.

The carat ($ct$) is the unit of measurement for the weight of a diamond (1 carat = 0.2 grams), which is directly related to its size. It is the aspect that affects price more than any other.

The common approach is to have as a goal to reach a certain “round number”: 1 carat, 2 carats, etc.

The Unique Perspective of Risivi: Perceived Size, Proportions, and Lifestyle.

Weight is a number, but visual impact is an art.

Our advice focuses on how to maximize the beauty of your investment.

• The Role of Design: A 1.5-carat diamond can appear much larger than a 2-carat diamond if placed in the right design. A subtle setting, a “halo” of smaller diamonds around the center stone, or a “jaw” setting that raises the diamond and allows light to enter from all angles can dramatically increase its perceived size. This is the secret of a personalized jewel well done.
• The “Cutting” Factor: A diamond with an excellent cut (Excellent Cut) reflects light better, appears brighter and, as a result, larger than its actual carat. Sacrificing cut quality to slightly increase weight is the most common mistake and one we always advise against.
• Proportions and Lifestyle: A very large diamond on a small hand may be disproportionate. Similarly, a ring with a large carat may be impractical for a very active person. The perfect piece of jewelry is one that harmonizes with you and your life.

Go now to discover the best Cut and Color of a diamond to choose from.