Added by 1 of our members
Harge was a world wholly owned and controlled by the Cinque, the five families. To them everyone else was in debt; for them everyone else must work or starve. There was one way to gather the cost of escape. That was through the singing jewels. The singing jewels could be found in the burrows of the most vicious monsters on that world of sand dunes. Find a good one and it would pay your passage out.
Used availability for E C Tubb's Web of Sand
September 1983 : UK Paperback
June 1979 : USA Mass Market Paperback
September 2011 : USA, Canada Kindle edition
September 2011 : Australia, UK Kindle edition