The first published, reproducible grading standard for fine rugs. Used by certified appraisers, insurance carriers, estate attorneys, and resale platforms.
Every rug assessed under the RUG Index Standard receives scores across five independent grading pillars. The combination produces a verifiable, reproducible value range across four value contexts: resale, retail replacement, auction, and insurance.
| ×3.2 | Persian Workshop Tabriz, Isfahan, Kashan, Nain, Qom. City-workshop attribution with documentation. | ×3.2 |
| ×2.8 | Persian Tribal / Village Qashqai, Bakhtiari, Kurdish, Luri, Heriz — verified attribution. | ×2.8 |
| ×2.4 | Turkish Fine Hereke, Kayseri — verified Turkish origin with documentation. | ×2.4 |
| ×2.0 | Afghan / Pakistani Verified hand-knotted origin. | ×2.0 |
| ×1.2 | Unknown Attributed Origin uncertain but hand-knotted construction confirmed. | ×1.2 |
| ×0.5 | Misrepresented Claimed origin contradicted by construction evidence. | ×0.5 |
| A+ | Excellent No wear. No repairs. Original pile height throughout. No colour fading. | ×1.00 |
| A | Very Good Minor even pile wear. No repairs. Minimal fading. Full structural integrity. | ×0.85 |
| B | Good Light wear in traffic areas. Minor repairs not affecting appearance. | ×0.70 |
| C | Fair Moderate wear. Visible repairs. Some structural issues. | ×0.55 |
| D | Poor Significant damage, holes, major repairs, or structural failure. | ×0.10–0.35 |
| ×2.5 | Silk on Silk Pure silk pile and foundation. | ×2.5 |
| ×1.8 | Silk Highlights on Wool Wool pile with silk accent elements. | ×1.8 |
| ×1.0 | 100% Wool Standard fine rug material. | ×1.0 |
| ×0.7 | Wool/Cotton Blend | ×0.7 |
| ×0.4 | Synthetic Polypropylene or nylon pile. | ×0.4 |
| ×2.8 | Antique 100+ years. Documentation required. | ×2.8 |
| ×2.0 | Semi-antique 50–99 years. | ×2.0 |
| ×1.4 | Vintage 25–49 years. | ×1.4 |
| ×1.1 | Modern 10–24 years. | ×1.1 |
| ×1.0 | Contemporary Under 10 years. | ×1.0 |