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Understanding diamonds is the first step to making an informed decision. Learn about the 4Cs, diamond shapes, certifications, and what makes each diamond chosen by KATURA perfect for your bespoke ring.
The 4Cs are the internationally recognized standard for assessing diamond quality. These four characteristics determine a diamond's beauty and value and how our diamond design experts choose the stones used in KATURA creations.
Cut refers to how well a diamond's facets interact with light. A well-cut diamond reflects light from one facet to another and disperses it through the top of the stone, creating sparkle and brilliance.
Excellent / Ideal
Maximum brilliance and fire. Only 3% of diamonds achieve this grade and it's from this select pool that we choose diamonds for pieces that will bear our hallmark.
Very Good
Reflects most light that enters. Excellent value with superior beauty.
Good
Reflects a majority of light. Good balance of quality and value.
Fair / Poor
Allows light to escape from sides and bottom. Less brilliance.
Shape refers to the outline of the diamond when viewed from above. Each shape has unique characteristics that affect brilliance, size appearance, and the personal style of the one who wears it.
The most popular and brilliant diamond shape. Maximizes light return with 58 facets.
Rectangular with step-cut facets. Sophisticated hall-of-mirrors effect.
Elongated shape that flatters the finger. Trending and elegant.
Square emerald cut with art deco charm and vintage appeal.
Square with rounded corners. Vintage appeal with modern brilliance.
Teardrop shape combining brilliance and uniqueness.
Elongated shape with pointed ends. Maximizes carat weight appearance.
Ultimate symbol of love. Unique and romantic shape.
Rectangular with trimmed corners. Brilliant faceting creates intense sparkle.
A diamond grading report is an independent assessment of a diamond's characteristics and is included free of charge with every KATURA diamond.
The world's most respected and consistent diamond grading authority. GIA created the 4Cs grading system.
One of the world's largest independent gemological laboratories. Known for thorough and consistent grading standards.
Known for their Light Performance grading and guaranteed certification. Offers unique optical brilliance measurements.
The next generation of diamond certification. WISE provides comprehensive grading with advanced technology and transparent reporting.
Fluorescence is the visible light some diamonds emit when exposed to UV light. Most diamonds have no fluorescence, but some glow blue (occasionally yellow, orange, or white).
These grades assess the quality of a diamond's finish and how precisely aligned its facets are. KATURA obsesses over the make of each and every stone we buy.
Refers to the smoothness of the diamond's surface. Excellent or Very Good polish is recommended for optimal light reflection.
Measures how precisely aligned and shaped the facets are. Good symmetry contributes to better light performance.
These measurements affect how light travels through the diamond and impacts brilliance.
Height of diamond from culet to table, expressed as a percentage of average diameter.
Ideal: 59-62.5% (round)
Width of the top facet in relation to the widest part of the diamond.
Ideal: 54-58% (round)
Our diamond experts are here to guide you through every step of your journey. Book a consultation to explore our collection and find the perfect diamond for you.