Certified Natural Ethiopian Welo Opal – 12.91 ct – Harlequin Pattern – Multicolor Play-of-Color – ICA GemLab Presented by ParaibaCollective, this beautiful 12.91-carat Natural Ethiopian Welo Opal showcases a captivating Harlequin-style play-of-color pattern, featuring vibrant flashes of golden yellow, fiery orange, refreshing green and subtle blue against a delicate translucent white body. Ethiopian Welo Opal is celebrated for its extraordinary optical phenomena and spectacular displays of spectral colors. This impressive specimen exhibits attractive mosaic-like patches of color reminiscent of the highly prized Harlequin pattern, creating a fascinating visual effect as the gemstone moves under changing light. Expertly fashioned into an elegant oval cabochon, this gemstone features beautifully balanced proportions, a smoothly polished domed surface and a graceful silhouette that enhances its colorful optical display. Certified by ICA GemLab with no treatments, this natural opal exhibits genuine multicolored play-of-color. Its attractive patchwork-style flashes and generous carat weight make it a distinctive specimen for collectors and jewelry enthusiasts. Its captivating Harlequin-style pattern, luminous crystal-white appearance and impressive dimensions make it an excellent choice for bespoke statement rings, luxury pendants, exclusive fine jewelry and distinctive opal collections. Measuring nearly 18 mm in length, this substantial 12.91-carat specimen combines elegant cabochon cutting, beautiful proportions and the mesmerizing character of natural precious opal. Gemstone: Natural Ethiopian Welo Opal Species: Natural Opal Weight: 12.91 ct Dimensions: 17.82 × 13.14 × 11.09 mm Body Color: Crystal White Lab Color: White Pattern: Harlequin-Style Patchwork (Seller Description) Play-of-Color: Orange, Blue, Yellow and Green Shape: Oval Cut: Cabochon Transparency: Transparent Phenomenon: Play-of-Color Origin: Ethiopia (Welo) – Seller Declaration Treatment: None Certification: ICA GemLab Report No.: TH26G134467 Report Date: 29 October 2026 From Our Bangkok Cutting Facility At ParaibaCollective, our gemstones are carefully selected by our in-house gemologist and expertly cut and polished to highlight their natural beauty, exceptional play-of-color and distinctive optical character. ParaibaCollective — From Rough to Remarkable.