4XS — UK D/E — US 2/2.5 — EU 41/42 — BR 6/7

3XS — UK F/G — US 3/3.5 — EU 43/44 — BR 8/9

2XS — UK H/I — US 4/4.5 — EU 45/46 — BR 10/11

XS — UK J/K — US 5/5.5 — EU 49/50 — BR 12/13

S — UK L/M — US 6/6.5 — EU 51/53 — BR 14/15

M — UK N/O — US 7/7.5 — EU 54/55 — BR 16/17

L — UK P/Q — US 8/8.5 — EU 57/58 — BR 18/19

XL — UK R/S — US 9/9.5 — EU 60/61 — BR 20/21

Rubielle London offers beautifully crafted jewelry designed to bring elegance and confidence to every moment. Each piece reflects refined craftsmanship, modern style, and lasting brilliance made for everyday luxury.

Crafted in solid 925 sterling silver finished in luxurious 18k gold vermeil with advanced microplating technology for enhanced durability, elevated brilliance and longer-lasting wear.

Hypoallergenic and designed for everyday elegance.

Large GRA-certified emerald-cut moissanite centre stone in a bold East-West orientation.

Selected in D Colour and VVS1 clarity for exceptional transparency, crisp light reflection and elevated architectural brilliance.

Every stone featured in The Sinclair is:

* D Colour (Colorless)
* VVS1 Clarity
* Precision-cut for amplified brilliance and light performance
* GRA-certified

Its emerald-cut faceting creates refined mirror-like reflections rather than excessive sparkle, a hallmark of sophisticated high jewellery.

Statement luxury styling, modern bridal wear, elevated evening dressing, collectors of architectural jewellery and those drawn to refined pieces with commanding presence.

This piece has been carefully inspected and certified by Rubielle London.

All materials, finishes and stones used are selected according to Rubielle’s quality standards to ensure authenticity, brilliance and craftsmanship.

Moissanite pieces include official GRA certification (Gemological Research Association) alongside Rubielle’s own RLC (Rubielle London Certification) certification as part of our dual-certification standard.

Created for lasting beauty and designed to be worn for years to come.

ABOUT RUBIELLE MOISSANITE

Rubielle moissanite is selected for exceptional fire, clarity and precision.

Each stone is certified by the Gemological Research Association (GRA) and includes its individual certificate, ensuring verified quality, authenticity and performance.

In addition to GRA certification, every Rubielle moissanite piece also includes Rubielle’s own RBL certification as part of our dual-certification standard.

With brilliance that exceeds traditional diamonds and a hardness of approximately 9.25 on the Mohs scale, moissanite offers extraordinary optical performance designed to last for years to come.

At Rubielle, we do not view moissanite as an alternative to diamonds.
We view it as an intelligent evolution of fine jewellery.

Designed with a bold architectural silhouette and carefully balanced proportions, The Sinclair combines sculptural structure with refined finishing techniques for elevated everyday wear.

Its East-West orientation modernises one of the most iconic cuts in fine jewellery while preserving the timeless sophistication historically associated with emerald-cut stones.

A bold East-West solitaire silhouette centred around a substantial emerald-cut moissanite stone. Designed to deliver sculptural elegance, quiet authority and timeless sophistication.

We stand behind our craftsmanship with a lifetime guarantee, ensuring your jewelry remains as brilliant as the day you received it.

Rubielle London is dedicated to creating timeless jewelry that blends modern luxury with classic elegance. Each piece reflects our commitment to quality, craftsmanship, and refined design.

At Rubielle, our pieces are crafted to combine lasting brilliance with everyday wearability.

To preserve the beauty of your jewellery over time:
• Avoid direct impact against hard surfaces
• Rings should be removed during intense physical activities or weight training to help prevent scratches
• Store pieces separately when not in use to preserve the finish and avoid friction between jewellery

For cleaning:
• Soak your jewellery in warm water with mild soap for a few minutes
• Use a soft brush gently around the stones and settings
• Rinse carefully and dry completely with a soft cloth

An ultrasonic cleaner may also be used for deeper cleaning when appropriate.

Consistent care helps preserve brilliance, structure and finish — allowing your jewellery to remain beautiful for years to come.

We offer reliable worldwide shipping and a hassle-free return policy, ensuring a smooth and confident shopping experience.