Onyx vs Marble
Marble edges ahead overall.
Side by side
| Use case | Onyx | Marble |
|---|---|---|
Kitchen counters Which holds up better in a busy kitchen? | 2/5 Too soft or reactive for daily kitchen abuse. | 3/5 Beautiful but etches from acids; expect a patina. |
Bathroom vanities Which is easier to live with in a bathroom? | 3/5 Workable; check water and product exposure. | 5/5 Classic bathroom material — minimal acid exposure. |
Outdoor use Which survives sun, rain, and freeze better? | 2/5 Soft and reactive; not ideal outdoors. | 2/5 Soft and reactive; not ideal outdoors. |
Maintenance load Which needs less ongoing care? | 2/5 Frequent sealing and gentle cleaning required. | 2/5 Frequent sealing and gentle cleaning required. |
Visual character Which gives you the look you want? | 4/5 translucent banding, dramatic veining. | 4/5 soft veining, cool tones. |
Scores are heuristic guidance, not certification. Always test products on your specific slab.