Meet the Stonemasters


Nasser, the “StoneMaster”

Nasser Al-Robaidi is Da Vinci Marble‘s in-house “StoneMaster” and has been in the stone business for more than two decades. Nasser spends half of the year in the Italian quarries in search of the finest natural stones. Whether discovering stunningly veined Calacata marble or hard-to-find granite, he has a gift for finding the best and most unique stones in the business. During his time back in California, you can find him in our showroom and warehouse, assisting clients and answering their stone questions.

Joe Concilla, President

As the President and founder of Da Vinci Marble, Joe Concilla is intimately involved in every aspect of Da Vinci Marble. Da Vinci Marble is a one-stop shop where clients can source their stone and tile for their projects. Customer Service and creating a one of a kind experience is important to Joe who spent the first part of his career as a high tech executive. Joe can be found along side Nasser in the quarries of Italy selecting the most beautiful materials for his clients.


Q: Where are your slab warehouses located?

A: We have 3 slab warehouses located on our Da Vinci Marble “campus”. Our main showroom houses Granite, Onyx, White Marble and Quartzite slabs, as well as our main tile gallery. We also have a dedicated Limestone and Travertine warehouse adjacent to our main building. Last but not least, we have a brand new warehouse, nestled across from our main building, that houses our very colorful and unique marble slabs. We invite you to visit all three slab warehouses when you are here!

Q: What are the different types of natural stone finishes?

A: The most common finishes for natural stone today are polished (shiny), honed (matte), brushed / leathered (these last two can sometimes be used interchangeably, a subtle texturing and undulation to the stone’s surface).

Q: Can I use white marble in my kitchen?

A: There is no doubt that using marble especially white marble for kitchen tops is here to stay despite of the many problems that may occur with usage. The main component in marble is Calcite “Calcium Carbonate” which will react to acids such as vinegar, wine, orange and lemon juice etc. It is highly recommended the use of honed marble as it is more susceptible to etch the polish. With proper maintenance and a sealing program, which will depend on the marble used, many etching and staining problems can be controlled and minimized. Immediate cleaning of any spills and using a low PH stone cleaner is highly recommended.

Q. What is the difference between Quartzite and Granite?

A: Quartzite is a metamorphic rock that forms from the joining of sandstone and quartz under intense heat and pressure. Quartzite is often found where metamorphism took place involving more pressure than heat. Granite is formed at greater depths than quartzite and is an igneous rock, which formed when liquid magma cools into existing rock formation. Quartzite and Granite are hard stones and their hardness can be measured on the Mohs scale. From 1-10 quartzite offers 7 and 6-6.5 for granite. Despite the hardness of quartzite it can often show signs of etching when used in kitchen applications because it is still a metamorphic rock and not igneous as granite.

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