A completed kitchen featuring RVC Taj Mahal Warm Beige in 30mm — note the waterfall island edges and the generous overhang with no support brackets underneath.
The engineered stone industry standard has always been 20mm. It's what most suppliers stock, what most cabinetmakers install, and what most homeowners end up with — simply because no-one told them there was another option.
Royal Victoria Collection is the only engineered stone brand in Queensland offering 30mm thickness across our full colour range. Here's why it matters.
The Overhang That Changes Everything
Look at the island in the kitchen above. The benchtop extends well past the cabinet base — enough legroom for bar stools — with nothing underneath holding it up. No steel brackets. No corbels. No timber supports. Just stone.
That's the structural advantage of 30mm:
| Stone Thickness | Max Unsupported Overhang |
|---|---|
| 20mm engineered stone | 350mm |
| 30mm engineered stone | 450mm |
That extra 100mm is the difference between sitting close to the cabinet and having genuine legroom at your island bench. And achieving it cleanly — without hardware or supports cluttering the underside — is only possible at 30mm.
Fewer Joins. Cleaner Lines.
With 20mm stone, achieving a premium waterfall island or mitred edge requires joining two pieces of stone at 45° to create the appearance of thickness. This means an extra join, extra material, and precision craftsmanship to match the stone pattern across the seam.
With 30mm stone, you already have the thickness. Waterfall islands need fewer pieces and fewer joins. The result is cleaner, simpler, and more impressive — because there's simply less to hide.
Stronger. More Durable. Built to Last.
30mm is 50% thicker than 20mm. Across a longer span, that translates to:
- Less flex and deflection under load
- Lower risk of cracking under point pressure
- Confidence on longer island spans without additional support
All Royal Victoria Collection stone contains less than 1% crystalline silica, fully compliant with current Australian safety regulations. Every slab is non-porous, stain-resistant, and built to perform in a working kitchen for decades.
30+ Colours. Every One Available in 30mm.
From warm, earthy tones to bold exotic colours — the Royal Victoria Collection has more than 30 options, every one available in both 20mm and 30mm. We are the only brand in Australia offering that choice across the full range.
Other popular colours include Taj Mahal, Calacatta Viola, Pink Onyx, Copper Sunset, Bolivia Blue, Fusion Green, Amethyst, and more. Visit our showrooms to see full slabs in person.
See It In Person
You need to see 30mm stone next to 20mm to understand the difference. Full slab displays at both our Queensland and NSW locations:
Rocklea, QLD
26 Breadwell St
Rocklea QLD 4106
Full slab gallery — 30mm range on display.
Open to trade and retail clients.
Designers, architects, cabinetmakers, builders, and homeowners welcome.
Chinderah, NSW
Opening Soon
19 Chinderah Bay Drive
Chinderah NSW
Serving the Northern Rivers, Tweed Coast, and southern Gold Coast region.
Ready to see 30mm for yourself?
📞 07 2141 6546
🌐 royalvictoriacollection.com.au
Book a Complimentary Colour Consultation →
Ask About 30mm On Your Next Project
If you're planning a kitchen renovation or new build, ask your designer, architect, or cabinetmaker about 30mm Royal Victoria Collection stone. Show them this article. Ask for a sample.
The three things most people notice when they see 30mm next to 20mm for the first time:
- How much more substantial it looks
- The island overhang — no brackets
- That they wish someone had mentioned it sooner
Most decisions are made quickly after that.
Royal Victoria Collection is Queensland's premium engineered stone importer. All products comply with Australian silica safety regulations (<1% crystalline silica). Trade accounts, designers, architects, and builders are welcome at all showroom locations. Pricing does not include freight.
