Although most Indus craft products were widespread one specialized type of object has been found only at Mohenjo Daro and Harappa: the stoneware bangle.
Its characteristics and manufacturing conditions suggest that it had some political significance - perhaps as a badge of office for the ruling class. They were of a standard size, 3 1/4 in (8.2 cm) diameter, and were inscribed before firing.
Several bangles were placed inside a cylindrical bowl with a lid (a saggar); several bowls were stacked together, coated with clay tempered with chaff and placed inside a tall jar, also coated in clay. An outer cap over the whole had a series of seal impressions made around it to prevent unauthorized opening.
The whole ensemble, supported by piles of terracotta bangles, was fired, at a temperature between 1000 degrees and 1100 degrees centigrade, producing stoneware closely resembling veined greyish pink metamorphic rock.