Five standout jewels at the 2013 globalDESIGN show Feb. 16–18 in Philadelphia:(Above)1. Earrings in 18k yellow gold with rock crystal and 0.32 ct. t.w. diamonds; $6,120; Zaiken Jewelry, Edgewater, N.J.; 888-992-4536; zaikenjewelry.com 2. Space heart necklace in oxidized silver with 1.52 cts. t.w. diamonds; $5,600; G & G Creations, Boston; 617-263-0096; gngcreations.com 3. Brick Face ring in Damascus steel with 18k gold liner; $2,750; a Chris Ploof and Anthony Lent collaboration, Philadelphia; 215-499-3582; anthonylent.com 4. Three-stone silver ring with 18k gold bezel-set red and pink tourmaline and rose quartz; $1,800; Symmetry, NYC; 646-654-7027; symmetryjewelry.com 5. Necklace with 560.51 cts. t.w. Paraiba tourmaline and 0.12 ct. t.w. diamonds; $7,200; Alex Sepkus, NYC; 212-391-8466; alexsepkus.com