To build vintage-look wall-mount sinks like these, Kara first visits a local stone yard to see what scraps of marble or granite they might have left over from a larger job. Since there isn't much use for 22-by-28-inch slabs, you can usually talk the supplier into giving you a good deal on high-end materials, which they'll also cut to your specifications. Paired with vitreous china undermount sinks and heavy-duty cast-iron shelf brackets, these sinks cost $900 each to make. Similar manufactured versions can cost over $2,000.
The white Venatino marble used here costs one-third less than Carrara and has a similar look.