Poisonous colourful Ratti seeds: how jewellers weighed, sold precious stones, gold to grand-mother, in Delhi

From the archive record

Ask your grand-parents how they weighed and bought jewellers from their local sonar sunhar, and they will tell you of the virtues of the black and red ratti seed which was used as a consistent weight measure by all jewellers in India, in the older days. See the rati seed in its seed pod at the Wilderness Orchard in Delhi in this video... Ratti (Sanskrit: raktika) is a traditional Indian unit of measurement for mass. Based on the nominal weight of a Gunja seed (Abrus precatorius), it measured approximately 1.8 or 1.75 grains or 0.1215 g as modern standardized weight.[citation needed] It is still used by the jewellers in the Indian Subcontinent. Indus weights were based on binary multiples of Masha which was equal to 8 Ratti Ratti weights of Ancient Indian coins Gandharan Satamana of 100 Ra