Web of Sand — E.C. Tubb

There was only one way out of Harge: to find a singing jewel, the greatest prize on
That world of sand dunes. But the jewels were hidden deep in the burrows of
Harge's most vicious predator. Earl Dumarest could match wits with the implacable Cyclan. But now, in his galaxy spanning quest for the lost planet Earth, he must face the WEB OD SAND