Bathroom stone is a technical specification
A custom stone vanity is not only furniture. It touches plumbing, waterproofing, wall support, drainage, cleaning, and builder timing.
Formal quoting should use drawings or marked dimensions wherever possible.
Stone suitability matters more in wet areas
Some marbles are beautiful but need careful wet-area expectations. Quartzite and sintered stone can be stronger where cleaning and durability dominate.
Finish, sealing, and care should be included in the quote conversation.
Define the installation boundary
The quote should state what April's Form supplies and what the builder, plumber, or installer controls.
This clarity is what serious bathroom buyers expect from premium bathware competitors.