Japanese Jewelry Design Conpetition In KOFU Designer/Keiko Iijima Company/ KOSHIN JEWEL Co.,LTD Materials/Koo-fu Pt950, Diamond Designer/Hitomi Tanzawa Company/ ISHITOMO CO.,LTD Materials /Koo-fu K 18YG, Iris Quartz, Diamond Designer/Satomi Horai Company/ ISHITOMO CO.,LTD Materials /Koo-fu K18PG, Ruby, Pink Sapphire, Pt850, K 18PG, K 18YG Designer/Moe Yano Company/ KONDO JEWELY CO.,LTD Materials/Koo-fu Pt950, Blue Topaz, Diamond
