About Us

Who We Are

LUSTRE CARAT is the fine-jewellery venture of Madhavi Diam, a diamond house that has been at the forefront of diamond manufacturing for over three decades. We bring that heritage directly to you, crafting certified jewellery, with each piece set with carefully selected natural diamonds, so you always know exactly what you are buying.

Our Heritage

Founded in 1995, Madhavi Diam has built its reputation on precision, integrity and an unwavering commitment to quality. Over more than 30 years we have grown into a trusted partner serving clients in 50+ countries, with end-to-end expertise that spans everything from raw diamond sourcing to finished jewellery.

LUSTRE CARAT carries that same standard into every piece we design, pairing decades of diamond know-how with thoughtful, wearable design.

Only Natural Diamonds

At LUSTRE CARAT, we work exclusively with natural diamonds, never lab-grown. Every stone is ethically sourced with complete traceability, so each piece carries the rarity and lasting value of a diamond formed by nature.

Certified & Verified

Trust is at the heart of what we do. Each and every piece of LUSTRE CARAT jewellery is SGL certified, without exception, so you can buy with complete confidence. Our diamonds and finished jewellery are graded by the world's leading laboratories:

• SGL: Every single piece of our finished jewellery is SGL certified.
• GIA: Certification of natural diamonds above 0.30 carat.

What We Stand For

• Certified quality. Every piece of jewellery is SGL certified to recognised standards.
• Honest craftsmanship. Pieces are made and quality-checked with the care of a 30-year manufacturing legacy.
• Transparent value. Direct-from-the-maker pricing, with no hidden mark-ups.

Get in Touch

Have a question or a custom request? We would love to hear from you. Reach us at contact@lustrecarat.com or visit our Contact page.