Search for the Golden Diamond of Kolimar - Steve Dimeo

Nick Christmas and his young Girl Friday,
Randi Degrotti, try to track down the famous
Golden Diamond of Kolimar that was
apparently stolen from the estate of Wade
and Adeline Huntington, only to discover
two other interests vying for its retrieval: an
archeology couple with two avid graduate
student assistants versus two physicists and
mysterious cohorts from an energy research
company called GEOS. Locating the diamond
in the least likely place, the detective and his
lady sidekick allow the archaeologist to
examine its suspected mystical properties in a
surprising climax that pits them against
shadowy henchmen who want it for its
earthlier powers.