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About Glemini

Where Heritage Meets Fine Jewellery

At GLEMINI,

We celebrate the timeless beauty of Ceylon sapphires by transforming nature’s rarest treasures into refined, contemporary jewellery. Every piece we create reflects craftsmanship, authenticity, and a deep respect for the origins of our gemstones. Our journey is rooted in Sri Lanka’s rich gem heritage and elevated through global standards of jewellery manufacturing.

Our Story

Double H White Leaf was founded with a clear vision

GLEMINI was created to bridge Sri Lanka’s centuries-old gem industry with the modern world of fine jewellery.

Coming directly from the gemstone industry, our founders bring first-hand knowledge of sourcing, grading, and selecting exceptional-quality stones. This deep understanding allows us to move beyond simply trading gems — into designing and manufacturing fine jewellery that highlights the true brilliance of natural sapphires.

Each GLEMINI creation is thoughtfully designed to honour the stone it carries, combining Sri Lankan gem heritage with modern craftsmanship, timeless elegance, and refined detail.

From Sri Lanka to the world !

To expand our global presence and serve international customers with confidence, Terrene
Group Pty Ltd was incorporated in Australia.
Through Terrene Group Pty Ltd, we proudly offer:

Certified Ceylon sapphires

Fine jewellery crafted with precision and integrity

International sales supported by professional governance and compliance

This structure allows us to combine Sri Lankan gem expertise with Australian business
standards delivering trust, transparency, and excellence worldwide

Our Story

Our Commitment to Ethical Sourcing

We work closely with small-scale gem miners and suppliers in Sri Lanka, helping them
connect with the global jewellery market.
By doing so, we:

  • Support local livelihoods
  • Promote ethical and transparent sourcing
  • Ensure customers receive natural, responsibly sourced gemstones

Every sapphire we sell is natural and comes with recognized Gemological Certification,
giving our customers complete confidence in authenticity and quality.

Our

Managing Partners

Gimhan Danushka Hettiarachchi

Geeshan Madushanka Hettiarachchi

Bring Your Dream Jewellery to Life

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