An optical device measures the girdle thickness in millimetres, expressed as a percentage calculated against the diamond's average diameter. As defined by the GIA, girdle thickness varies from Extremely Thin to Extremely Thick.

However, extremes in girdle thickness pose challenges. An extremely thin girdle, although visually enticing, is fragile and susceptible to damage. On the contrary, a very thick girdle conceals weight, implying that the diamond appears lighter than its actual carat value.

Polishers employ techniques like Painting and Digging Out to subtly heighten the diamond's yield without compromising its visual appeal. These methods are acceptable within the defined thresholds of the GIA. Any significant alteration jeopardises the diamond's visual allure and grading.

In case of a solitaire ring, whether adorned with prongs or in a bezel setting, the girdle needs to maintain a certain thickness to withstand the setting process. Precisely why at Valquère, we ensure the perfect girdle thickness for our handcrafted solitaire rings, providing not just an impeccable piece of jewellery but also a true 'Statement Made'.


In the ever-evolving diamond market landscape, high-quality lab grown diamonds are becoming a popular choice, particularly for their sustainable production process, cost-effectiveness, and identical physical properties to mined diamonds.

In conclusion, the girdle's size plays a pivotal role in a solitaire ring, accentuating its elegance, integrity and longevity. And in the world of Valquère, these attributes are artfully entwined to deliver a masterpiece with every piece. Do not hesitate to contact us if you have any questions.