Hollow hoop ear rings

A friend singed a pair of hollow hoop ear rings. He has asked me to
re-make the pieces but that would be impractical as the wholesale
cost would be less than $400.00, and besides the lack of time that I
have I would charge probably twice that price. We have tried all the
usual sources to no avail.(Stuller, QGC, HMS, Tripps, Dazzlers, Kim,
etc.) I found an old catalog from Neti Co., they had them but no
longer in bus. We have found many sources that have smaller
versions. The earrings are 4mm square and 41mm outer diameter and
hollow.

Please help
RJKARATMAN