"Geologically speaking," write the authors, "agate is not a particularly uncommon rock . . .. However, good agate – i.e, that which ancient lapidaries would have found suitable for beadmaking – is not widely available. Nodules of the size and quality required to make Harappan-style long-barrel carnelian beads are, in fact, extremely rare" (p. 177).
Results from a 2011 survey of Lake Siranda in Balochistan to locate prehistoric shell middens and study the Neolithic people who lived there in greater detail between the 8th and 6th milleniums BCE.
"In the year 2000," writes the author, "I initiated a large‐scale effort to identify the geologic sources from which peoples of the Indus Civilization (ca. 2600 to 1900 BC) acquired rock and mineral resources."
The author's propose a method to analyze some of the largest artifacts recovered at Indus Civilization (ca. 2600 to 1700 BC) cities in Pakistan and northwestern India, the limestone “ringstones.” This later led to the determination that Harappa's ringstones came from near Dholavira.
A detailed look at carnelian and agate sources and manufacture throughout the Gulf region, and how many of the beads found show clear evidence of ancient Indus manufacturing techniques.
Harappa’s rock and mineral assemblage from the perspective of the greater Indus Valley’s complex geology, the distance one would have to travel to acquire certain materials and a discussion of the differing motivations behind the acquisition and transport of rock and minerals in the greater Indus Valley region.
The discovery of many Mesolithic (roughly 10,000 BCE and afterwards, many thousands of years before the height of the Indus Civilization) sites in the Thar Desert in the 1990s.