Overview
- The polished stone was presented in Colombo by its anonymous owners, who say it is now for sale.
- Consultant gemologist Ashan Amarasinghe describes it as the world’s largest documented natural purple star sapphire.
- The gem displays a well-defined six‑ray asterism, a distinguishing feature of star sapphires highlighted by experts.
- Owners say the rough material was sourced near Rathnapura in 2023, purchased with other stones, and later recognized as exceptional.
- The team reports certification by two laboratories, with international valuers estimating its worth at $300 million to $400 million.