Our Gemstones
For your engagement ring, you can choose between lab-grown gemstones: classic lab-grown diamond or brilliant moissanite. Both options combine beauty, quality, and responsibility.

Moissanite
Brilliance with character.
Moissanite is an exceptionally radiant gemstone – with a higher refractive index than diamond and a vibrant fire that instantly catches the eye. Originally discovered in meteorites, it is now lab-grown.
With a hardness of 9.25 on the Mohs scale, moissanite is nearly as durable as diamond. Long-lasting, resilient, and perfect for everyday wear. And: it's significantly more affordable than a diamond of comparable size and quality.
A conscious choice for those who want to combine style, ethics, and brilliance.

Lab Diamond
True beauty, responsibly cultivated.
Lab-grown diamonds are real diamonds. Chemically, physically, and optically identical to natural ones. The difference? They are created under controlled conditions in modern laboratories, not mined from the earth. This way, we avoid environmental harm and questionable supply chains, without compromising on quality or brilliance.
The 4 Cs – What makes our diamonds exceptional
Every diamond at MOI Studios is graded according to the internationally recognized 4C standards: Carat, Color, Clarity, and Cut. These four characteristics together determine a diamond’s quality, beauty, and value.
- Carat – The weight of the diamond. The higher the carat weight, the larger the stone. We deliberately choose sizes that offer a balanced harmony of presence and wearability.
- Color – Our diamonds fall within the highest color range (D–F), which means they are colorless – and therefore exceptionally brilliant.
- Clarity – We exclusively use diamonds with high clarity (VS+), where inclusions are not visible to the naked eye.
- Cut – Cut is key to sparkle. We use diamonds with excellent or very good cuts to maximize fire and brilliance.

