White Trocas Shell Shank Buttons 20-Pack – Natural Mother of Pearl Style, Silver-Tone Metal Shank Back, Hand-Sew 10mm & 11.5mm for Shirts, Blouses & Fine Garments The real thing, not plastic imitation. These buttons are crafted from natural Trocas (Trochus) shell — a sustainably harvested sea shell prized for its luminous white surface and subtle iridescent shimmer. Each button is unique, with gentle variations in tone and luster that no synthetic material can replicate. Key Features Genuine Trocas Shell – Natural sea shell with a smooth, pearlescent white surface; each button carries its own subtle grain and light-play Silver-Tone Metal Shank – Secure loop shank soldered to the back keeps the shell face completely uninterrupted — no holes, no visible thread Hand-Sew Attachment – Designed for traditional hand stitching; the shank loop accommodates standard sewing thread and needles Two Delicate Sizes – 10mm for cuffs, baby wear, and fine detail; 11.5mm for shirt fronts, plackets, and blouse closures Natural & Sustainable – Trocas shell is one of the most sustainably sourced shell materials in the button industry, harvested from managed fisheries Perfect For Dress shirts, silk blouses, linen garments, bridal wear, christening gowns, baby clothing, high-end knitwear, bespoke tailoring, heirloom sewing projects, doll clothing, and fine craft work.