Black Knight
December 17, 2019
Why do we love this stone?
Just like the name implies, White Pearl will bring the “treasure of the sea” into your room. A gem of a stone that gives a simple yet stunning opulence to any surface.
The technical stuff
It’s cool, we get it, you want to know absolutely everything about this stone. Well here you go, go nuts.
| Specification |
Typical |
| Slab size nominal |
3050 x 1300 x 6.5mm |
| Slab thickness tolerance |
+/- 0.70mm |
| Slab flatness |
+/- 1mm width | +/- 2mm length |
| Gloss |
56 |
| Slab weight |
58kg |
| Property |
Test Method |
Typical Value |
| Specific Gravity |
ASTM D792 |
2.40 |
| Hardness |
MOHS |
7.6 |
| Water Absorption |
AS 1756-1989 (AS-3558.1) |
0.03% |
| Colour Fastness |
AS 1756-1989 (AS-3558.3) |
No Change |
| Impact Resistance |
AS 1756-1989 (AS-3558.15) |
No Cracks or Grazing |
| Impact Resistance |
EAN1467.9 |
3.30j Unsupported 6.1j Supported |
| Izod Impact Resistance |
ASTM D256 |
2.23ft.lbf |
| Flexural Strength |
ASTM D790 |
47Mpa |
| Resistance to Surface Scratching |
AS 1756-1989 (AS-3558.4) |
Unaffected |
| Resistance to Surface Scratching |
AS/NZS 2924.2.14 |
6.5N |
| Wear Index |
ASTM D4060 |
0.58mg/cycle |
| Heat Resistance |
NEMA D2863 |
No Change |
| Steam Resistance |
AS/NZS 2924.2.23 |
No Change |
| Boiling Water Surface |
NEMA LD-3 |
No Change |
| Stain Resistance |
AS 1756-1989 (AS-3558.42 |
Pass. Any superficial stains were removed by water, undiluted bleach or Jiff. |
| Slip Resistance |
AS/NZS 4586 Dry |
Class F (Medium) |
| Slip Resistance |
AS/NZS 4586 Wet |
21 |
| Thermal Shock |
ASTM C484 |
No cracks or crazing |
| Heat Release |
AS/NZS 3837 |
Total Heat Released 50.1 MJ/kg |
| Average Specific Extinction Area |
AS/NZS 3837 |
153.1 m2/kg |
| Critical Heat Flux |
ASISO 9239.1 |
4 |
| Early Fire Hazard Ignitability Index |
AS1530.3 0-20 |
4 |
| Early Fire Hazard Spread of Flame Index |
AS1530.3 0-10 |
0 |
| Early Fire Hazard Heat Evolved Index |
AS1530.3 0-10 |
2 |
| Early Fire Hazard Smoke Developed Index |
AS1530.3 0-10 |
2 |
