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White Onyx
White Onyx is a premium luxury natural stone with a luminous white base softly enriched by warm beige undertones and subtle, flowing veining that drifts across each slab with an ethereal, cloud-like quality that feels genuinely otherworldly in its delicate beauty. What truly sets onyx apart from all other natural stones is its remarkable translucent quality, where light passes through the stone to reveal hidden layers, patterns and depth in a luminous, glowing display that no other material can replicate. In backlit applications, White Onyx reaches its full breathtaking potential, transforming any installation into a genuinely extraordinary feature of soft, radiant luxury that captivates everyone who encounters it. Due to its softer composition, onyx is best suited to lower traffic areas and feature applications rather than heavy-use kitchen benchtops, where its extraordinary visual qualities can be fully appreciated and carefully preserved. Perfectly suited to backlit feature walls, bar tops, bathroom vanities and fireplace surrounds, White Onyx pairs beautifully with warm metallics, soft ambient lighting and contemporary minimalist interiors where its ethereal, luminous character can take full centre stage. Regular sealing and professional installation with proper support are recommended to ensure its lasting beauty.
Onyx Slabs
Looking to make a bold, unforgettable statement? Few materials match the beauty and drama of onyx slabs. Known for their vivid colour, striking veining, and natural translucency, onyx is more than just a stone — it’s a showpiece.
At Avant Stone, we offer one of Sydney’s most refined selections of premium onyx slabs, sourced from leading quarries around the world. Whether you’re designing a high-end residence, a luxury retail space, or a standout feature in a hospitality project, onyx offers something truly exceptional.
What Makes Onyx So Special?
Onyx is a rare, semi-precious stone formed from layered minerals over thousands of years. Its surface tells a story through bold patterns, soft gradients, and glowing tones. Unlike granite or marble, onyx can be backlit, creating a stunning, illuminated effect that enhances its natural beauty.
Designers and architects love working with onyx for its:
- Translucent qualities – perfect for backlit applications
- Vibrant colours and veining – each slab is one-of-a-kind
- Luxurious presence – ideal for focal points and high-impact spaces
- Smooth, polished finish – adds sophistication to any design
Why Avant Stone?
At Avant Stone, we don’t just sell stone, we help you make a lasting impression. Our team understands both the aesthetic and technical sides of working with premium stones like onyx. That’s why designers, builders, and homeowners across Sydney trust us with their most ambitious projects.
When you choose us, you get:
- A premium collection of hand-selected onyx slabs
- Expert guidance on application, installation, and maintenance
- A Sydney-based showroom to view full slabs in person
- Flexible order support for residential or commercial projects
- Personalised service from people who care about your vision

