Best Onyx Kitchen Sinks of 2026

Jennifer Fraser Avatar
Jennifer Fraser
Last Updated: 4 Feb 2026

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Onyx kitchen sinks are a stylish and practical addition to any kitchen. Made from a unique blend of natural materials, including quartz and resin, these sinks offer exceptional durability and resistance to scratches, stains and heat. Available in a range of sizes and styles, from undermount to top mount, Onyx sinks offer a sleek and modern look that complements any kitchen decor. With a wide range of colours to choose from, including black, white and grey, these sinks are both functional and aesthetically pleasing. Onyx kitchen sinks are a great choice for anyone looking for a high-quality, long-lasting sink that will add value to their home.

At a Glance: Our Top Picks

Kraus KGU-413B 31 inch Undermount Single Bowl Black Onyx Granite Kitchen Sink Cover #TOP 1
Kraus KGU-413B 31 inch Undermount Single Bowl Black Onyx Granite Kitchen Sink
ftb score rating icon 9.8
Kraus KGD-410B 24 2/5 inch Dual Mount Single Bowl Black Onyx Granite Kitchen Sink Cover #TOP 2
Kraus KGD-410B 24 2/5 inch Dual Mount Single Bowl Black Onyx Granite Kitchen Sink
ftb score rating icon 9.7
Franke Orion Granite Kitchen Sink, Single Bowl Cover #TOP 3
Franke Orion Granite Kitchen Sink, Single Bowl
ftb score rating icon 9.5

Top 10 Onyx Kitchen Sinks

#TOP 1

Kraus KGU-413B 31 inch Undermount Single Bowl Black Onyx Granite Kitchen Sink

KGU-413B
Black Onyx
31 Inch
Kraus KGU-413B 31 inch Undermount Single Bowl Black Onyx Granite Kitchen Sink Cover
Kraus KGU-413B 31 inch Undermount Single Bowl Black Onyx Granite Kitchen Sink

Features
Looks And Feels Like Real Stone
Constructed From 80% Natural Granite
Protected By Thermal Finishing Process
Naturally Sound-Absorbing Non-Porous Surface Is Hygienic & Heat-Resistant
Highly Resistant To Heat, Chipping, And Discoloration
#TOP 2

Kraus KGD-410B 24 2/5 inch Dual Mount Single Bowl Black Onyx Granite Kitchen Sink

KGD-410B
Onyx Black
Kraus KGD-410B 24 2/5 inch Dual Mount Single Bowl Black Onyx Granite Kitchen Sink Cover
Kraus KGD-410B 24 2/5 inch Dual Mount Single Bowl Black Onyx Granite Kitchen Sink

Features
Looks And Feels Like Real Stone
Constructed From 80% Natural Granite
Protected By Thermal Finishing Process
Naturally Sound-Absorbing Non-Porous Surface Is Hygienic & Heat-Resistant
Highly Resistant To Heat, Chipping, And Discoloration
#TOP 3

Franke Orion Granite Kitchen Sink, Single Bowl

114.0286.447
Onyx
Franke Orion Granite Kitchen Sink, Single Bowl Cover
Kitchen Sink Made of Tectonite with A Single Bowl Orion Oid 611-78 - Onyx

The Franke Orion Sink features a single bowl design, providing ample space for washing dishes and preparing food. Its reversible drainer position gives you flexibility in your kitchen layout, making it easy to adapt to your needs. The sink is cut to fit seamlessly into your countertop, ensuring a tidy appearance. With external dimensions of 780 x 500 mm, it is a practical choice for various kitchen sizes, allowing you to maximise your workspace while enhancing your kitchen's aesthetic.

What We Like
Spacious single bowl design
Reversible drainer position
Seamless countertop integration
Ideal for various kitchen sizes
#TOP 4

Bewitch 15X15X9 Inches Onyx Black Drop In Kitchen Bar Sink

Bewitch
ALS151509B-1
Onyx Black 15x15x9
15"x15"x9"
Bewitch 15X15X9 Inches Onyx Black Drop In Kitchen Bar Sink Cover
Bewitch 15X15X9 Inches Onyx Black Drop In Kitchen Bar Sink, Black Stainless Steel Topmount Workstation for Small Kitchen, Outdoor, and RV Use

Features
Workstation Drop In Sink-: Ledges On The Front And Back Provides A Track To Make Good Use Of The Limited Countertop Space. The Customized Accessories, Such As Roll Up Drying Rack And Cutting Board, Can Slide On The Ledges For Various Use. It Can Also Be Used As A Cutting Board, Drying Mode Or A Separate Sink, Just Hide The Accessories When Not In Use. The Bar Prep Sink Is Suitable For Preparing Drinks. It Can Take Enough Ice Water, Or Even Wash Cups, Dessert Plates Or Small Items.
Premium Construction-: The Black 15”x15”x9” Drop In Kitchen Bar Sink Is Made Of Type-304 Stainless Steel, 16 Gauge Thick Construction. It Is Conducive To Having A Long-Term Use With Great Resistance To Rust And Dent. Sink Surface Is Brushed With Gunmetal Black By Nano PVD Technology, Enhancing Its Usefulness. Stain, Corrosion And Scratch Proof. Prone To Clean And Maintain.
Soundproofing & Anti-Condensation-: Sound Reduction Pads And Anti-Condensation Primer On The Underside Of The Drop In Sink. EVA Rubber 3mm Thickened Silent Pad Obviates The Noise Of Water Flow And Impact Excellently, Keeping The Kitchen Quite. Anti-Condensation Coating Technology Can Offer A All-Sided Protection Of The Whole Sink And Prevent Water Condensation From Accumulating On The Bottom Of The Sink, Which Will Keep The Cabinet Dry And Durable.
Sink Size & Packing Box-: External Size: 15”(L) X 15”(W) X 9”(H), Single Bowl Top-Mount Small Kitchen Sink. Internal Bowl Size: 13”(L) X 11”(W) . Minimum Cabinet Size: 18”. Countertop Opening Size: 14”(L) X 14”(W). 3.5” Drain Hole Can Match Most Kitchen Garbage Disposal Unit. Packing In The Box Will Have: Black Drop In Small Sink, Bottom Grid, Cutting Board, Roll Up Drying Rack And Drainer Assembly, Cutting Template, Mounting Hardware And Instruction.
Fast Drainage & Round Corner -: Sink Bottom Has Four Visible Water Direct Lines And A Slight Ramp, Allowing The Water To Flow Fast And Fluently. The X-Shaped Guide Line And Ramp Can Help To Keep The Sink From Water Accumulating And Damaging. The All Inside Angles Are Designed To Be R10 Round Corners With Sleek Looks, Easy To Maintain And Long-Lasting. Dirt And Water Stains Piled Up In Corners Can Be Easily Removed And Cleaned.
#TOP 5

Kitchen Sink Made of Granite with a Single Bowl from Franke Sirius S2D 611-78 - Onyx

S2D 611-78
Onyx
78 x 50 x 20 cm
Kitchen Sink Made of Granite with a Single Bowl from Franke Sirius S2D 611-78 - Onyx Cover
Kitchen Sink Made of Granite (Tectonite) with a Single Bowl from Franke Sirius S2D 611-78 - Onyx - 143.0612.629

Features
Cut In Countertop: 764 X 484 Mm. Drainer Position: Reversible Model.
External Dimensions: 780 X 500 Mm. Dimensions Of The Bowl: 350 X 432 X 200 Mm. Number Of The Bowls: 1.
#TOP 6

Kraus KGD-433B 33 1/2 inch Dual Mount 50/50 Double Bowl Black Onyx Granite Kitchen Sink

KGD-433B
Onyx Black
Kraus KGD-433B 33 1/2 inch Dual Mount 50/50 Double Bowl Black Onyx Granite Kitchen Sink Cover
Kraus KGD-433B 33 1/2 inch Dual Mount 50/50 Double Bowl Black Onyx Granite Kitchen Sink

Features
Looks And Feels Like Real Stone
Constructed From 80% Natural Granite
Protected By Thermal Finishing Process
Naturally Sound-Absorbing Non-Porous Surface Is Hygienic & Heat-Resistant
Highly Resistant To Heat, Chipping, And Discoloration
#TOP 7

Schock Manhatten R100 Sink Unit Onyx

Schock
MANR100AGON
Onyx
Schock Manhatten R100 Sink Unit Onyx Cover
Schock Manhatten R100 Sink Unit Onyx

Features
Inner Dimensions Of The Basin: See Sketch
Sink Size: See Sketch
Weight Including Packaging: 9.60 Kg
Net Weight Of The Sink: 6.10 Kg
Cut-Out Dimensions: See Plan
#TOP 8

Kraus KGU-434B 33 inch Undermount 50/50 Double Bowl Black Onyx Granite Kitchen Sink

KGU-434B
Black Onyx
32.5"
Kraus KGU-434B 33 inch Undermount 50/50 Double Bowl Black Onyx Granite Kitchen Sink Cover
Kraus KGU-434B 33 inch Undermount 50/50 Double Bowl Black Onyx Granite Kitchen Sink

Features
Looks And Feels Like Real Stone
Constructed From 80% Natural Granite
Protected By Thermal Finishing Process
Naturally Sound-Absorbing Non-Porous Surface Is Hygienic & Heat-Resistant
Highly Resistant To Heat, Chipping, And Discoloration

Franke Sirius S2D651CB 1.5 Bowl Kitchen Sink

S2D651CB
Black
One Size
Franke Sirius S2D651CB 1.5 Bowl Kitchen Sink Cover
Franke Sirius S2D651CB 1.5 Bowl Tectonite Reversible Carbon Black Kitchen Sink

The Franke Sirius 1.5 Bowl Sink offers a versatile design with its 1.5 bowl feature, allowing you to manage multiple tasks simultaneously, such as rinsing vegetables while washing dishes. With a minimum base unit requirement of just 600 mm, it fits easily into most kitchen layouts. The overall dimensions of L1000 x D500 mm provide ample space for all your kitchen needs. Additionally, the cut-out dimensions of W984 x D484 mm ensure a seamless installation. This sink is a practical choice for busy kitchens.

What We Like
Spacious 1.5 bowl design
Fits standard base units
Ample overall dimensions
Easy installation cut-out size

Liquida CMP5BL Reversible Inset Kitchen Sink

CMP5BL
Black
Liquida CMP5BL Reversible Inset Kitchen Sink Cover
Liquida CMP5BL 1.0 Bowl Reversible Inset Black Kitchen Sink with Waste Kit

The Liquida CMP5BL Sink is a stylish and functional addition to your kitchen. With a minimum base unit requirement of 450mm, it easily fits into various kitchen layouts. Its overall dimensions of L860 x D435 x H170 make it spacious enough for all your washing needs. The cut-out dimensions of W847 x D420 ensure a precise fit during installation. As an inset sink, it provides a seamless look that enhances your kitchen's aesthetic while offering practicality.

What We Like
Reversible design for flexibility
Space-efficient dimensions
Inset installation for seamless finish
Easy fit for various units
Buying Guide Image
Editor's Notes

During our onyx kitchen sink research, we found 306 onyx kitchen sink products and shortlisted 10 quality products. We collected and analyzed 10,211 customer reviews through our big data system to write the onyx kitchen sinks list. We found that most customers choose onyx kitchen sinks with an average price of £367.41.

The onyx kitchen sinks are available for purchase. We have researched hundreds of brands and picked the top brands of onyx kitchen sinks, including Kraus, FRANKE, Bewitch, Schock, Liquida.

Written by
Jennifer Fraser Avatar

Jennifer Fraser is a licensed contractor specializing in sales, maintenance, and kitchen, bathroom, and home appliances, tools, and utilities. She owns a store in Leeds where you can get any home and tool appliance. Jenny has a degree in literature, but she combines her knowledge and experience with her degree to publish DIY articles on solving home appliances issues to keep up the family enterprise.