Catch this quintet while you can at the JCK show Design Center.(Above) 1. Swing Series ring in 18k gold with 17 ct. amethyst and 0.10 ct. t.w. diamonds; $3,480; Elena Kriegner, New York City; 212-643-0060; elenakriegner.com 2. Sterling ring with 0.75 ct. t.w. diamonds; $1,800; Walt Adler, New York City; 504-383-5004; waltadler.com3. Bracelet in 18k gold-plated silver; $870; Marta Salinas, Madrid; 34-63-920-1902; martasalinas.comReto Halme Photography4. Carved ebony bracelet in 18k gold with 3.85 cts. t.w. diamonds; $39,750; Prediletto Collection, New York City; 888-293-4770; predilettocollection.com5. Earrings in 14k gold and silver with 4.75 cts. t.w. organic shaped diamond slices and 0.58 ct. t.w. pavé; $2,700; Khushboo Lakhi, New York City; 212-944-7575; khushboolakhi.com