Diamond 18K ring setting
without main stone (diamonds selection)-Side stone type: same as main stone
-Side stone weight: Around 0.05 carat
Weight of main stone in the picture:
1.00 carats
Main stone embedding weight:
No limit
The classic princess square 18K ring with diamond setting is an elegant and exquisite jewelry, suitable for jewelry lovers who like classic style. The ring is made of 18K gold and matched with the sparkling diamonds, exuding charming light. The square design is simple and generous, highlighting the taste of low-key luxury, and is a perfect choice to show the noble temperament. Whether it is a daily match or an accessory for important occasions, it can add confidence and charm to you.


Choosing the Right Carat
a Subtle Balance of Style and Proportion
Carat weight influences how a diamond looks and feels when worn.
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0.5 ct (5mm diameter) Light and refined, ideal for daily wear, earrings, or minimalist designs.
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1 ct (6.5mm diameter) Classic choice with balanced presence, often used in engagement rings.
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1 ct above Bold and eye-catching, perfect for statement pieces and special occasions.
Jewelry type matters
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Rings - Choose a size that complements your hand and ring profile.
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Earrings - Opt for smaller stones with strong brilliance for comfort and facial balance.
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Necklaces - Match carat and chain length to neckline for visual harmony.
Selecting the right carat is about style, comfort, and lifestyle. Our experts are here to help you find your perfect fit.
Seal of Authority - Diamond Certification and Grading Explained

GIA (Gemological Institute of America) stands at the pinnacle of credibility in diamond certification. Renowned for its uncompromising standards and precise grading, GIA ensures each diamond meets the highest level of quality. A GIA certificate is more than a report - it’s a mark of trust, excellence, and lasting value.
IGI (International Gemological Institute) is a globally recognized diamond grading authority known for its efficient and flexible evaluation standards. It uniquely includes the 'Hearts and Arrows' cut in its reports, offering a more detailed view of craftsmanship. Widely accepted in the global market, IGI certificates provide both reliability and diverse options for consumers.

Diamond color grading ranges from D to Z, with D-F being colorless, and D being the most rare and pure. G-J are near-colorless, with faint undertones that still maintain brilliance in specific lighting. As the grade decreases, the color deepens, transitioning from light yellow to the noticeable yellow of Z. RAGAZZA exclusively selects the highest-grade D color diamonds, renowned for their flawless whiteness, which sparkle with exceptional brilliance in any light, perfectly embodying their rare and incomparable value.

Diamond clarity ranges from IF+ (internally flawless) to I (included), reflecting the presence of internal and surface imperfections. RAGAZZA’s IF+ diamonds are exceptionally rare, offering flawless brilliance. VVS and VS grades feature only minute inclusions, barely visible even under magnification. While SI and I grades may show visible inclusions, a well-balanced choice across the 4Cs ensures optimal beauty and value.

Cut is the key to a diamond’s brilliance - precise angles allow light to reflect and refract perfectly, creating exceptional sparkle. Graded from Excellent to Poor, only Excellent cuts fully maximize brightness. In contrast, deep or shallow cuts cause light leakage, diminishing radiance. RAGAZZA selects diamonds with Good to Excellent+ cuts, ensuring optimal light performance and unmatched brilliance.