Picture: Jonny Lew / Pexels The world’s largest sapphire cluster was discovered hidden in a person’s yard in Ratnapura and consultants are saying it might be value US$100 million. The uncommon specimen weighs roughly 510 kilograms or 2.5 million carats and has been dubbed “Serendipity Sapphire”. The fortunate gent who stumbled upon this cluster instructed