| 摘要 |
PROBLEM TO BE SOLVED: To form a beautiful pattern and prevent the pattern from losing, formed by combining different precious metals. SOLUTION: A first annular parts 1 comprises an inner circumferential part 3 and a joining part 4 formed on an outer circumference thereof, and a second annular parts comprises an outer circumferential part 5 and a joining part 6 formed on an inner circumference thereof. The joining part 4 comprises a projecting part 4a and a recessed part 4b, and the joining part 6 comprises a recessed part 6a and a projecting part 6b to be engaged with the joining part 4. The joining part 4 of the first annular parts 1 is engaged with the joining part 6 of the second annular parts 2 and the engaged parts are brazed. After the first annular parts 1 is brazed to the second annular parts 2, the outer circumferential part 5 of the second annular parts 2 is ground. When the outer circumferential part 5 is ground, the projecting part 4a of the first annular parts 1 is exposed from the ground part. The strip-like pattern is formed of the projecting part 4a of the exposed first annular parts 1 and the projecting part 6b of the second annular parts 2.
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