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The Karran Sternhagen Diamond is a single-bowl quartz vessel sink in Black that sits above the counter, making it the visual centerpiece of any bathroom vanity it anchors.
A vessel sink sits entirely on top of the counter rather than dropping into or mounting beneath it, so the full profile of the bowl is visible. That installation style changes how the vanity reads in the room: the sink becomes part of the design rather than a cutout in the surface. The Black finish on this Sternhagen Diamond deepens that effect, giving the basin a defined, high-contrast presence against lighter countertop materials or a dramatic tonal match against dark stone or solid surface. Because it installs above the counter, it is compatible with all countertop materials, including stone, laminate, wood, and solid surface, without requiring an undermount cutout or specific countertop support.
The sink body is quartz composite, a dense material that holds its color consistently through the bowl. The Black finish here is a deep, even matte that does not show the variation or veining you would see in a stone basin. Quartz composite resists the everyday wear of a bathroom sink, and the matte black surface keeps water spots and soap residue from standing out the way they would on a polished or lighter-colored finish. The 5-1/8 inch interior depth gives the bowl enough volume for comfortable daily use without the basin sitting so tall above the counter that it feels awkward to reach.
This sink suits a primary or guest bathroom where the vanity is meant to make a statement. Designers specifying a moody, modern, or contrast-forward bathroom will find the Black quartz vessel a natural anchor for that palette. It also works well in a powder room, where a bold vessel sink over a pedestal or floating vanity reads as a deliberate design choice rather than a background fixture. The 30 inch minimum cabinet width requirement keeps it practical for most standard vanity bases, though the sink's above-counter profile means the vanity height, combined with the bowl's height, determines the final working surface level. Plan that finished height before finalizing the vanity and faucet selection. A tall vessel faucet or wall-mounted faucet is typically required to clear the rim.
No. Because it mounts above the counter, it is compatible with all countertop materials, including laminate, wood, stone, and solid surface. No undermount cutout is required.
A tall vessel faucet or a wall-mounted faucet is the standard pairing. The faucet needs enough height to clear the rim of the basin. Confirm the faucet height against the finished bowl rim height before ordering.
No. This sink is not ADA compliant.
The drain opening is 3-1/2 inches in diameter, sized for standard vessel drain fittings. The drain is not included and should be ordered separately.
Choose this Black quartz vessel sink when the goal is a vanity that reads as a finished design decision, where the basin is part of the look rather than just the plumbing.
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