Stainless Steel 9-Pack Clear Crystal Nose Stud

Walmart

Small, round, clear gem matches exactly, Silver-toned metal matches, Stud design is consistent, Material (stainless steel) is appropriate for body jewelry, Retailer (Walmart.com) is high priority

Rebel Bod 20G Press Fit Gem Top Nose Stud

Rebel Bod

Clear, round gem matches, Silver-toned metal matches, L-bend/screw post is a possible match

Sterling Silver Gem Nose Screw

BellyBling.net

Small, round, clear gem matches, Silver-toned metal matches, Straight post is a possible match