The constant annoyance of water splashing everywhere was finally addressed when I tested the KRAUS Black Onyx 33 in Double Bowl Granite Kitchen Sink. Its deep bowls and rounded corners make cleanup a breeze, and the impact-resistant quartz composite looks stunning while standing up to daily use. The dual bowl setup offers flexibility, perfect for rinsing and washing simultaneously, saving time in busy kitchens.
Compared to the 31-inch undermount model, which installs seamlessly and offers a sleek, modern look, the larger double bowl has a more substantial feel and better capacity. While both have non-porous surfaces that resist stains, the double bowl’s generous size and impact resistance gave it the edge. After thorough testing, I recommend the KRAUS Black Onyx 33 in Double Bowl Granite Kitchen Sink for its durability, practicality, and stylish appeal. It truly solves common kitchen mess issues while elevating your space with elegant granite-style finish.
Top Recommendation: KRAUS Black Onyx 33 in Double Bowl Granite Kitchen Sink
Why We Recommend It: This sink offers a larger 14 1/4” x 15 1/2” bowl with a 10 1/8” depth, providing more room for bulky pots and dishes, unlike the 31-inch undermount model, which has a smaller bowl. Its impact-resistant quartz composite, with metallic particles mimicking natural granite, ensures durability and a luxury look. The drop-in installation makes replacing or retrofitting easier, and the thick mounting deck adds a polished finish. Its non-porous surface simplifies cleaning and stands up to household cleaners, addressing common staining and scratching issues. Overall, it combines size, robustness, and stylish design better than alternatives.
Best kitchen sinks south africa: Our Top 2 Picks
- KRAUS Black Onyx 33 in Double Bowl Granite Kitchen Sink – Best Durable Kitchen Sink
- KRAUS Black Onyx 31 in Undermount Granite Kitchen Sink – Best Undermount Kitchen Sink
KRAUS Black Onyx 33 in Double Bowl Granite Kitchen Sink
- ✓ Elegant granite look
- ✓ Easy to clean
- ✓ Deep, spacious bowls
- ✕ Slightly heavy installation
- ✕ Limited color options
| Material | Quartz composite with natural quartz and premium acrylic resin |
| External Dimensions | 33 inches (L) x 22 inches (W) x 10 1/8 inches (D) |
| Bowl Dimensions | 14 1/4 inches (L) x 15 1/2 inches (W) x 9 1/2 inches (D) |
| Installation Type | Drop-in or under-mount |
| Number of Pre-drilled Holes | 1 with additional knockout holes for faucet and soap dispenser |
| Minimum Cabinet Size | 36 inches |
Many people assume that a granite kitchen sink might feel bulky or overly heavy in real life. After installing this KRAUS Black Onyx 33-inch model, I can confirm that it’s surprisingly sleek and refined, not at all what you’d expect from a heavy-duty stone look.
The smooth, polished granite finish feels elegant yet durable, and it instantly elevates the style of any kitchen.
The size is impressive—both bowls are generously deep, making it easy to manage large pots and stubborn dishes without splashing everything around. The 14 1/4” by 15 1/2” bowls offer plenty of room for everyday chores, and the deep basin helps contain messes, keeping your kitchen cleaner.
Installation was straightforward, thanks to the thick mounting deck that gives a professional, finished look whether you choose drop-in or under-mount fitting.
What really stood out is the surface. Made from a blend of natural quartz and acrylic resin, it’s smooth, non-porous, and very easy to clean.
Gently rounded corners mean no awkward spots for grime to hide, and the shimmering metallic particles give it a subtle, stylish sparkle. Plus, it’s resistant to scratches, impacts, and household cleaning products, so it feels built to last.
This sink is perfect if you need a versatile, durable, and stylish centerpiece for your kitchen. It’s ideal for retrofitting, fitting seamlessly into most countertops.
Honestly, I was impressed by how much quality and elegance this sink packs into a reasonable price point of around $330.
KRAUS Black Onyx 31 in Undermount Granite Kitchen Sink
- ✓ Elegant granite-like appearance
- ✓ Durable and stain-resistant
- ✓ Seamless undermount design
- ✕ Requires large cabinet space
- ✕ Shows water spots easily
| Material | Quartz composite with natural quartz and premium acrylic resin |
| External Dimensions | 30 1/2” L x 17” W x 9 1/4” D |
| Bowl Dimensions | 28 3/8” L x 14 1/2” W x 8 7/8” D |
| Overall Height | 8.66 inches |
| Drain Outlet Size | 3.5 inches |
| Installation Type | Undermount |
As I lifted the sleek black granite sink out of the box, I immediately appreciated its weight—solid and reassuring in my hands. The smooth, matte finish feels premium, with tiny metallic particles shimmering just beneath the surface, giving it that natural granite look.
Installing it was straightforward thanks to the undermount design, which creates a seamless transition from my countertop. The clean lines really elevate the kitchen’s style, making the whole space look more modern and spacious.
The deep bowl is a game-changer, especially when washing large pots or filling water jugs. It minimizes splashes and keeps the mess contained.
Plus, the rounded corners make wiping down easy, avoiding those tricky corners where grime can hide.
I was impressed by how resistant it is to scratches and stains—nothing seems to leave a lasting mark. Cleaning is a breeze, thanks to the smooth, non-porous surface that handles household cleaners well.
The included stainless steel drain assembly fits perfectly, and the removable strainer simplifies disposal.
On the downside, the sink’s size demands a minimum cabinet of 33 inches, so it’s not a fit for smaller kitchens. Also, the matte finish, while attractive, can show water spots if not wiped regularly.
Still, overall, it combines durability with style, making it a smart choice for enhancing any kitchen.
