All sinks come with a 1 year warranty against material defects! All sinks have a 1.5" drain hole and REQUIRE the use of a Pop-Up style drain without overflow OR a grid drain. See drains at end of section.
I personally select all of our petrified wood material from which our sinks are crafted from! I select mostly petrified hardwoods such as petrified teak, Petrified rosewood, petrified palm, petrified black pine and petrified yellow pine. All of our petrified sinks have completely polished basins, NO RESIN, and many have fully polished or selectively polished exteriors to bring out the most beauty and contrast and to remove the softer and less stable petrified pulp woods on the exteriors. The polishing adds a lot of beauty and is not done by many other crafters, if any at all!
You can prevent hard water deposits and stains from developing by waxing them regularly with a Stone and marble wax, such as StoneTech Revitalizer Cleaner & Protector. Do not use acidic household cleaners or cleaning wipes with harsh or abrasive chemicals, or any cleaners with abrasive material added, as these will damage and scratch the petrified wood. To keep your sink's natural shine you should reseal your sink once or twice a year with a product such as StoneTech Heavy Duty Sealer by Dupont. Here are some more useful links: