To mutually combine a plurality of jewelry samples and a plurality of sample bodies and to show various completed products in accordance with customer's requests by detachably forming a combination of each jewelry sample and each sample body.

A jewelry sample 1 is formed by holding and fixing imitation diamond 2 by six claw parts 3 formed on the upper part of a stone base 4 and forming an inserting part 5 consisting of an approximately truncated conical shape on the lower part of the base 4. The selected jewelry sample 1 is inserted from the inserting part 5 into the fitting part 31 of the selected sample body 30 with the diamond 2 in the upper direction. Since magnetic material fitted to a joint piece 6 and a supporting frame 33 are mutually attracted, the piece 6 and the frame 33 are held at a contact state. When the sample 1 is rotated by a finger or the like, its engaging part 8 is engaged with an engaging part 34 and the sample 1 is surely fitted to the sample 30 at a previously determined position with a previously determined angle. The sample 1 fitted to the sample 30 can be detached upward by a finger or the like.