Onyx is formed by a slow precipitation from generally cold solutions of carbonated spring water. Translucent, generally layered, calcite with colors in pastel shades, usually yellow, brown, green, orange, and white. True onyx is nearly pure crystalline silica closely related to agate, a semi-precious stone.

Onyx is valued for its translucent quality and can be backlit for dramatic effect.

Care & Maintenance

A regular maintenance regimen will help your onyx become more resistant to scratching and wear. Onyx is sensitive to harsh chemicals. Do NOT use vinegar or any cleaners containing acids or strong alkaline agents. Perfect Tile recommends wiping or mopping onyx with warm water, or a pH-balanced neutral cleaner, followed by dry-wiping. If you spill acidic juices or alcohol on onyx, you should blot dry immediately. Acid-based foods, such as citrus or tomatoes, can etch the polished finish of onyx. Do NOT place hot items directly onto a onyx countertop. To prevent alkaline and soap-scum buildup, use a squeegee in the the shower area.

A quality impregnating sealer is recommended for all onyx installations. This sealer penetrates the stone and allows the stone to breathe and permits more of the stone’s natural beauty to shine through. Unsealed onyx is more susceptible to absorbing moisture, dirt and cleaning chemicals. Onyx should be sealed at installation, and Perfect Tile recommends a reapplication every 1-2 years.

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