The Science of Diamond Sparkle & July’s Ruby Birthstone


This month at Le Arret, we're celebrating ruby, July's birthstone, and the science behind diamond brilliance that makes custom-crafted fine jewelry truly exceptional.

Ruby crystals on a white background.

Featured This Month:

Coloured Gemstone Masterpieces

Faceted colored gemstones in various shades arranged on a dark stone surface.

Coloured gemstones are defining this season's most coveted jewellery trends, bringing vibrant individuality and timeless luxury to every design. From rich ruby reds to captivating ocean blues, each custom-crafted piece is created to reflect your unique vision and personal style.

For private viewings and bespoke inquiries, contact us at info@learret.com

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July's Birthstone: Ruby

Treasured by royalty for centuries, rubies were once considered more valuable than diamonds. Their rich crimson hue symbolizes passion, prosperity, and protection, making July's birthstone one of the most coveted gems in the world. Ancient warriors carried rubies into battle, believing the gemstone possessed protective powers. Exceptional rubies over one carat are often rarer than diamonds of the same size, making fine ruby jewelry a true statement of luxury and rarity.

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The Science Behind Diamond Sparkle

When admiring a diamond, most focus on carat weight or clarity. Yet the true magic of a diamond lies in something far more important: cut precision and light performance.

A diamond's brilliance is not simply a gift of nature—it is the result of extraordinary craftsmanship. A diamond cutter is not solely shaping a gemstone; they are engineering the way light behaves within it.

What Is Light Performance?

Light performance refers to how a diamond interacts with light.

When light enters a diamond, it should bounce from facet to facet before returning to the viewer's eye. This creates three distinct visual effects:

Brilliance – The bright white light reflected from the diamond.

Fire – The flashes of spectral colours, often seen as rainbow bursts.

Scintillation – The sparkle and contrast pattern created when the diamond, light source, or wearer moves.

The finest diamonds achieve an exceptional balance of all three.


Book a Complimentary Consultation

Ready to begin your custom jewelry journey? Book a complimentary one-on-one consultation with our team. 

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