Microfibre Cloth — The Lint-free Standard for Gem Care
Microfibre Cloth — The Lint-free Standard for Gem Care
Split synthetic fibres that lift dust and oil without scratching
A microfibre cloth is a lint-free cloth woven from ultra-fine synthetic fibres — typically polyester combined with polyamide — used for cleaning and polishing gemstones and finished jewellery. Microfibre has displaced cotton flannel and chamois as the standard cloth for routine maintenance because its split-fibre construction lifts and traps dust, skin oil, and polishing residues without leaving the fibres or scratching the surface that older materials sometimes did.
Construction
The fibres in a microfibre cloth are extruded as conjoined polyester-polyamide filaments and then split mechanically or chemically to expose many more surfaces per unit area than a single-filament fibre would offer. The result is a cloth with very high surface area, strong capillary action for absorbing oils, and a slightly electrostatic character that helps the fibres pick up and hold loose dust particles. Standard cloth weight for jewellery use is in the 200 to 300 gram-per-square-metre range, finer than the heavier cloths sold for automotive or general household cleaning.
Use on stones and metal
For routine wipe-down between wears, microfibre is the appropriate choice across virtually all gem materials, including soft stones such as opal, pearl, and emerald that should not be subjected to ultrasonic cleaning. The cloth should be dry or only slightly damp; for heavier soiling, mild soap and warm water followed by patting dry with a clean microfibre is the GIA-recommended sequence. The cloth itself should be laundered regularly to prevent oils and abrasive particles from accumulating in the weave.
What to avoid
Paper towels, household tissue, and ordinary cotton can leave fibres on faceted stones and contain enough mineral content to scratch softer materials over time. Microfibre cloths intended for eyeglass care are generally suitable for jewellery; cloths sold for car wax application typically are not, as they may carry abrasive residues from prior use. Dedicated jewellery cloths impregnated with polish are a separate product category and should not be confused with plain microfibre.