
Vratsa Limestone Blocks
Bulgaria
1YR![]()
Min Order : 20 Tons
| Grade | Size | Surface | Reference FOB Price |
|---|---|---|---|
| A | 320*230*150cm | Machine Cut | / |

Spain
Established: Dec 29,1928
Main Product: piedra paloma (slabs/tiles), Bk devil face (slabs/tiles), Bk gold face (slabs/tiles), Bk kafe face (slabs/tiles), piedra ambra (slabs/tiles), Black Kafe
Raul Villalba
Sales Manager
Tel: +34 620926730
Adr: Camino Mina Matagallar, km 0.7 (s/n) Pedrera (41566), Sevilla SPAIN

Bulgaria
1YR![]()

Portugal
2YR![]()

Belgium
4YR![]()

United Arab Emirates
1YR

Iran
13YR![]()

China![]()

Morocco
13YR![]()

Morocco![]()
We are Piedra Paloma, S.L., quarry owners and suppliers of high-quality BK Genesis Limestone raw blocks extracted from our own quarry in Calatorao, Zaragoza, Spain.
BK Genesis is a recrystallized fossiliferous limestone distinguished by its horizontal stripes in red, green, and gold. This stone represents the balance of heterogeneity and homogeneity, brought forward through new extraction methods that highlight its natural striped structure while maintaining consistency in each phase of processing.
A material of identity, exclusivity, and elegance, BK Genesis stands out worldwide for its aesthetic beauty, technical reliability, and cultural value. Its style and personality elevate architecture and decoration to the highest levels of refinement and international recognition.
Type: Recrystallized fossiliferous limestone (sedimentary rock)
Quarry Location: Calatorao, Province of Zaragoza, Spain
Export Hub: Pedrera, Seville, Spain
Fine-grained crystalline limestone with fossil traces
Striking horizontal veins in red, green, and gold
Natural balance of uniform base and decorative variation
Distinctive for its warm tones and timeless appearance
(according to UNE-EN Standards)
Water Absorption at Atmospheric Pressure (UNE-EN 13755): 0.30 ± 0.0 %
Slip Resistance (UNE-EN 14231:2004):
Wet SRV: 71.67 ± 1.64 units
Dry SRV: 64.75 ± 2.75 units
Apparent Density (UNE-EN 1936): 2622 ± 98 kg/m³
Open Porosity (UNE-EN 1936): 1.0 ± 0.1 %
Compressive Strength (UNE-EN 1926): 98.0 ± 11.5 MPa
Frost Resistance (UNE-EN 13271): Change of flexural strength after 100 cycles: 20.1 ± 9.0 MPa
Resistance to Ageing by Thermal Shock (UNE-EN 14066): Mass loss after 20 cycles: 0.3 %
Breaking Load at Dowel Hole (UNE-EN 13364:2002): 2400 ± 400 N
Water Absorption Coefficient by Capillarity (UNE-EN 1925): 0.89 ± 0.15 g/m²·s½
Abrasion Resistance (UNE-EN 1341; Annex C): 23.4 ± 0.7 mm
Flexural Strength under Concentrated Load (UNE-EN 12372):
Low Expected Value: 18.8 MPa
Mean Value: 21.0 MPa
Standard Deviation: 1.6 MPa
Calcium Carbonate (CaCO₃): ~96–98%
Silica (SiO₂): ~1–2%
Magnesium Carbonate (MgCO₃): ~0.5–1%
Iron Oxides (Fe₂O₃): Trace amounts (responsible for red/golden hues)
Fossils & accessory minerals: minor
Mohs Hardness: ~3–4
Raw Blocks: Quarry direct supply
Slabs: 2 cm & 3 cm thickness (standard)
Tiles & Cut-to-Size:
Metric: 30×30 cm, 60×30 cm, 60×60 cm, 120×60 cm
Imperial: 12″×12″, 24″×12″, 24″×24″, 48″×24″
Custom Dimensions: Available on request
Packing Details:
Raw blocks: Wire-cut, secured with steel strapping
Payment Terms: T/T, L/C, or as per contract agreement
Delivery Terms: FOB, CNF, CIF worldwide
Exterior: Facades, cladding, paving, pool areas
Interior: Flooring, wall cladding, stairs, fireplaces
Special Projects: Sculptures, columns, furniture elements
Decorative Uses: Book-matched wall panels, design features
Clean with mild pH-neutral detergents (avoid acids and abrasives)
Regular sealing recommended for high-traffic or exterior areas
Easy to maintain due to low porosity and high density

Bulgaria
1YR![]()

Portugal
2YR![]()

Belgium
4YR![]()

United Arab Emirates
1YR

Iran
13YR![]()

China![]()

Morocco
13YR![]()

Morocco![]()
Piedra Paloma is a company dedicated to the extraction and commercialization of natural stone that are extracted from our own quarries. Our products, Faces From Calatorao limestone and Piedra Paloma limestone, are unique due to their beauty and high quality.
We invite you to imagine new ways of creating with materials of countless possibilities