It's a given fact that buyers, specifically in India, regularly encounter the term "Ratti" while purchasing a gemstone. "Ratti" is the traditional Indian unit for measuring mass and is derived from the Sanskrit word
"Rattika," as mentioned in classic Ayurvedic literature for weighing small objects. This unit is the Indian equivalent of the "Carat" weighing unit.
There are two major types of Ratti units: Goldsmiths use the "Suneri Ratti" for gold and other metals, while astrological gemstone dealers use the "Pakki Ratti" to weigh gems. It's the Pakki Ratti
that is typically used to weigh gems.