Catuṣkoṭi (Pvt) Ltd · Colombo & Ratnapura · Sri Lanka
We are a Ratnapura landowning family whose land grant dates back to 1720. Today we mine, auction and trade natural Ceylon gemstones, and bring a chemist’s eye for colour to every stone.
What we do
01 · Land & mining partnerships
Experienced, licensed mining teams can work our land on a revenue-share basis. Every parcel is sold at open auction, so the price is clear to everyone, and settlements are written up and shared after each sale.
02 · Rough & trade
Natural Ceylon sapphire, spinel, chrysoberyl and more, straight from our own mines. We sell rough lots at auction and cut stones in parcels to the trade, in Colombo and abroad.
Our brands
Téja
Our own-mined stones, cut and certified, and jewellery made to order. For private buyers and collectors.
Colour Physics
Measured, repeatable colour for gemstones, textiles and tea, with the Huey™ imaging instrument and spectrometry.
About
Catuṣkoṭi is led by Sasanka Bandara, a chemist from the second generation of our family’s gem-mining business. Before returning to mining he spent many years in colour and manufacturing, including as General Manager at MAS Brands for Sri Lanka and Bangladesh.
He holds a BSc (Hons) in Chemistry from the University of Colombo, an MBA from the University of Sheffield and the Advanced Management Program from Columbia Business School.
Contact
Land, rough, trade parcels or anything else. We reply to every message.