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Namibia Black Pearl Granite

Namibia Black Pearl Granite

Granite

Namibia

About

Item Details

Material Type:
Granite
Origin:
Namibia (Damara)
Recommended Usage:
Kitchen and bathroom countertops, wash basins, building stone, ornamental stone, stairs, interior, exterior wall and floor applications, mosaic, waterjet pattern, wall panels, table tops, balustrades, columns, wall and pool copings, pool pavers, sculptures, fireplaces, window sills
Additional Names:
Namibia Black Granite, Black Pearl Granite, Damara Black Pearl Granite, Damara Black Granite, in China stone market:黑珍珠(hēi zhēnzhū), Namibia Black Pearl Granite
Finished Surface:
Polished,Flamed,Bush Hammered,Tumbled,Brushed,Honed,Split,Machine Cut,Natural Surface,Sandblasted,Acid Washing,Combed,Leathered,Water Jet,Filled,Chiseled,Pickling

Testing

Water Absorption:
0.2–0.36% (low porosity)
Density:
2680–2720 kg/m³
Flexural Strength:
13–22 MPa
Compressive Strength:
200–230 MPa

Description

Namibia Black Pearl Granite is prized for its deep, jet‑black background with fine, iridescent speckles that reflect light and often show subtle hints of blue, gold, or silver when viewed from different angles. Under direct light, these tiny reflective mineral inclusions create a “pearl‑like shimmer” that gives the stone its distinctive visual appeal — calm from afar but lively up close. The pattern is relatively uniform without bold veins, with speckles distributed evenly across the surface.

Texture & Structure:

This stone is a coarse‑grained, crystalline igneous rock with a dense and homogeneous texture. The mineral grains — primarily quartz and feldspar — are interlocked, contributing to excellent mechanical properties. The surface feels fine yet solid to the touch, with a consistent structure that resists fracturing along weak planes.

Typical Mineral Composition (% by Weight)

The composition below is representative of high‑quality black granites; actual values vary with the deposit and lab analysis:

  • Quartz: 30–38%
  • Feldspar (mainly Potassic + Plagioclase): 45–55%
  • Mica (Biotite/Minor Muscovite): 5–10%
  • Amphibole/Opaques & Accessory Minerals: 2–7%

The reflective “pearl” effect is caused by fine mica, iron‑titanium oxides, and trace feldspathic minerals that catch light.

Chemical Composition (% by Weight)

Typical granite chemistry (approximate silica‑rich composition):

  • SiO₂ (Silica): 68–74%
  • Al₂O₃ (Alumina): 13–17%
  • K₂O + Na₂O (Alkali Oxides): 4–6%
  • CaO (Calcium Oxide): 1–4%
  • Fe₂O₃ + FeO (Iron Oxides): 1–3%
  • MgO, TiO₂, MnO, Others: <1–2%

These values reflect a typical acidic intrusive igneous rock, with high silica and alkaline feldspar content.

Mechanical & Physical Test Results

Values below are typical ranges for black granites, not quarry‑specific lab data:

  • Compressive Strength : 200–230 MPa
  • Flexural Strength : 15–30 MPa
  • Density: ~2,680–2,720 kg/m³
  • Water Absorption: ~0.2–0.36% (low porosity)
  • Modulus of Rupture: 18–22 MPa

These values indicate a very strong, durable stone suitable for structural applications.

Hardness

On the Mohs scale, typical granite minerals rank:

  • Quartz: 7
  • Feldspar: 6–6.5
  • Mica: ~2.5–3

Overall rock hardness is dominated by the Quartz and Feldspar matrix, giving it good scratch and abrasion resistance.

Surface Finish Options

Namibia Black Pearl Granite can be finished in multiple ways depending on aesthetic and functional needs:

  • Polished: High gloss, deep color, reflective shimmer
  • Honed: Matte, smooth, less reflective
  • Flamed: Textured, slip‑resistant for outdoor paving
  • Brushed / Sandblasted: Softer, rustic texture
  • Leathered: Soft sheen with texture — less slippery than polished 

Usage / Applications

Thanks to its aesthetics and technical performance, Namibia Black Pearl Granite is well‑suited for:

Interior:

  • Kitchen countertops & islands
  • Bathroom vanities
  • Feature walls
  • Stair treads & risers

Exterior:

  • Facades & cladding
  • Flooring & paving
  • Fountain surrounds
  • Monumental stonework

It’s especially popular where a high‑contrast black finish with natural sparkle is desired.

Maintenance

  • Sealing: Recommended annually (impregnating sealer) due to mineral inclusions
  • Cleaning: pH‑neutral stone cleaner; avoid acids/bleach
  • Scratch resistance: Excellent, but avoid dragging sharp metal
  • Heat resistance: Good; use trivets under hot cookware

FAQ

Is Namibia Black Pearl Granite with a polished surface good for house flooring?

Namibia Black Pearl Granite with a polished surface can be a good choice for house flooring, but there are several factors to consider before making a decision: 1. **Durability**: Granite is a very durable and hard natural stone, making it suitable for high-traffic areas. Its resistant to scratches and can withstand heavy use. 2. **Aesthetic Appeal**: The polished surface of Namibia Black Pearl Granite gives a sleek and elegant look, which can enhance the luxurious feel of your home. Its dark color can create a dramatic effect and contrast well with lighter-colored walls and furniture. 3. **Maintenance**: Polished granite is relatively easy to clean and maintain. However, it needs to be sealed properly to prevent staining, especially in areas prone to spills or moisture. 4. **Safety**: A polished surface may be slippery, especially when wet. It’s important to consider the use of rugs or mats in areas where slipping is a concern, such as bathrooms or kitchens. 5. **Cost**: Granite can be more expensive compared to other flooring materials like laminate or vinyl. Its important to ensure that it fits within your budget. 6. **Home Style**: Consider whether the sleek and modern look of polished black granite fits with the overall style and decor of your home. If you are comfortable with the care requirements and the polished surface fits your aesthetic preference, Namibia Black Pearl Granite can be an excellent choice for house flooring. However, always consult with a professional to ensure it meets your specific needs and is installed correctly.

Is Namibia Black Pearl Granite a suitable choice for gravestones?

Namibia Black Pearl Granite can be a suitable choice for gravestones for several reasons. Granite, in general, is a popular material for gravestones due to its durability, resistance to weathering, and ability to be polished to a high shine. Here are some considerations specific to Namibia Black Pearl Granite: 1. **Aesthetics**: Namibia Black Pearl is known for its dark, elegant appearance with specks that can give it a unique and striking look. This aesthetic appeal can be a way to create a dignified memorial. 2. **Durability**: Granite is one of the hardest natural stones, which makes it resistant to scratches, chips, and weathering. This ensures the gravestone will maintain its appearance over time. 3. **Maintenance**: Granite requires relatively low maintenance compared to other materials. It can be easily cleaned and does not require sealing as frequently as some other natural stones. 4. **Customization**: Granite can be easily engraved with inscriptions, designs, or images, allowing for a high level of personalization. 5. **Availability and Cost**: The availability and cost can depend on your location and the supplier. Namibia Black Pearl may be more expensive or harder to find in certain areas compared to more common granites. Before making a decision, it may be beneficial to consult with a local monument company to discuss the specific characteristics of Namibia Black Pearl Granite, ensure it meets any cemetery regulations, and compare it to other available materials in terms of cost and personal preference.

Will a hot pot leave a mark on a Namibia Black Pearl Granite kitchen countertop?

Namibia Black Pearl Granite is a durable and heat-resistant natural stone, which makes it suitable for kitchen countertops. Generally, granite can withstand the heat from pots and pans without leaving marks or causing damage. However, its always a good practice to use trivets or hot pads to avoid any potential thermal shock or discoloration, which can happen if heat is concentrated in one area for an extended period. While it is unlikely that a hot pot will leave a mark, taking precautions will help maintain the countertops appearance in the long run.

If lemonade spills on a Namibia Black Pearl Granite kitchen countertop, will it damage the surface?

Namibia Black Pearl Granite is generally resistant to most spills, including acidic ones like lemonade, due to its durable and dense nature. However, granite is a natural stone and can be porous if not properly sealed. If the granite is well-sealed, it should be resistant to staining from lemonade spills. Its still a good practice to wipe up spills promptly to prevent any potential damage and to maintain the surfaces finish. Regular sealing of the granite can help maintain its resistance to staining and etching. If youre unsure about the sealing, you might want to test a small area with water to see if it beads up or gets absorbed. If its absorbed, resealing might be necessary.

Can I use bleach when cleaning a Namibia Black Pearl Granite kitchen countertop?

It is not recommended to use bleach on Namibia Black Pearl Granite or any other natural stone countertops. Bleach is a harsh chemical that can damage the surface by breaking down the sealant, leaving the stone vulnerable to stains, etching, and other damage. Instead, you should use a pH-balanced cleaner specifically designed for natural stone, or mild dish soap mixed with water. Regular cleaning and promptly wiping up spills will help maintain the appearance and longevity of your granite countertop. Always refer to the manufacturers care guidelines for the best cleaning practices.

If I cut meat directly on my Namibia Black Pearl Granite kitchen countertop, will it damage the surface?

Cutting meat directly on your Namibia Black Pearl Granite countertop is generally not recommended. While granite is a hard and durable stone, using it as a cutting surface can lead to several issues: 1. **Scratches**: Granite is resistant to scratches, but it is not completely scratch-proof. Over time, cutting directly on the surface may cause scratches, especially from knives or sharp objects, which can mar the appearance of the countertop. 2. **Dull Knives**: Regularly using your granite countertop as a cutting board can dull your knives. Granite is harder than most knife materials, which means your knives will lose their sharpness more quickly. 3. **Stains and etching**: Although granite is relatively resistant to stains and etching, certain acidic substances or fatty juices from raw meat might, under certain circumstances, affect the finish if not promptly and properly cleaned. To maintain the beauty and longevity of your granite countertop, it is advisable to use a cutting board when preparing food. This will protect both your knives and the countertop surface.

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