How much does Giallo Siena marble weigh per square metre?
40.65 kg per square metre at 15 mm, 48.78 kg at 18 mm and 54.20 kg at 20 mm, at the published apparent density of 2710 kg/m³.
Sizes and formats, and what is held

We hold 15, 18 and 20 mm as standard stock. Slabs run 1500 to 3200 mm long and 1200 to 2000 mm wide. Those are bands, not fixed sizes, so a cut list is checked against the physical stock before it is priced.
| Property | Value | Source |
|---|---|---|
| Thickness held | 15 mm · 18 mm · 20 mm | Our own stock statement |
| Slab length | 1500 to 3200 mm | Our own stock statement |
| Slab width | 1200 to 2000 mm | Our own stock statement |
| Stock area held | 3000 m² | Our own stock statement |
| Minimum cut thickness | 10 mm after vacuum resin treatment | Published block and slab characteristics |
The stock thicknesses are the ones a cut list can be drawn against without a conversation. A band rather than a size is the honest way to state a warehouse: the slabs on the rack differ from each other, and a cut list that assumes a single size will be checked against what is physically there.
What these figures are, and what they are not The thicknesses and the area are our own stock statement, not a published figure. The 10 mm minimum is published and is a property of the material after resin treatment, not of our warehouse.
40.65 kg per square metre at 15 mm, 48.78 kg at 18 mm and 54.20 kg at 20 mm, at the published apparent density of 2710 kg/m³.
Yes.
This answer sits on the Sizes and formats, and what is held page, with the rest of the questions about it.
Sizes and formatsA thickness, a format, a finish, a quantity and a destination will get you a quotation for Giallo Siena marble.
What sizes and thicknesses of Giallo Siena marble are there?