---
product_id: 551284716
title: "HARDSTONE Premium Quartz Kitchen Sink 21x18x8.5 Inches | Smoky Black Granite Single Bowl Composite Sink with Stainless Steel Waste Coupling & Flexible Drain Pipe | Dual Mount | 10 Year Warranty"
brand: "hardstone"
price: "$657.93"
currency: USD
in_stock: true
reviews_count: 8
category: "Hardstone"
url: https://www.desertcart.us/products/551284716-hardstone-premium-quartz-kitchen-sink-21x18x8-5-inches-smoky-black
store_origin: US
region: United States of America
---

# 21x18x8.5 inch deep single bowl Dual mount with stainless steel waste coupling Quartz granite composite - ultra durable HARDSTONE Premium Quartz Kitchen Sink 21x18x8.5 Inches | Smoky Black Granite Single Bowl Composite Sink with Stainless Steel Waste Coupling & Flexible Drain Pipe | Dual Mount | 10 Year Warranty

**Brand:** hardstone
**Price:** $657.93
**Availability:** ✅ In Stock

## Summary

> 🖤 Transform your kitchen into a modern masterpiece with the Premium Quartz Sink everyone’s talking about!

## Quick Answers

- **What is this?** HARDSTONE Premium Quartz Kitchen Sink 21x18x8.5 Inches | Smoky Black Granite Single Bowl Composite Sink with Stainless Steel Waste Coupling & Flexible Drain Pipe | Dual Mount | 10 Year Warranty by hardstone
- **How much does it cost?** $657.93 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/551284716-hardstone-premium-quartz-kitchen-sink-21x18x8-5-inches-smoky-black)

## Best For

- hardstone enthusiasts

## Why This Product

- Trusted hardstone brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **10-Year Worry-Free Warranty:** Confidence guaranteed with coverage against cracks, chips, discoloration, and leaks.
- • **Heavy-Duty Granite Composite:** Impact, heat, and sound resistant for a quiet, long-lasting kitchen centerpiece.
- • **Bold Smoky Black Matte Finish:** Elevate your kitchen with a sleek, modern quartz surface that resists stains and fingerprints.
- • **Generous Deep Basin Dimensions:** Spacious 21x18x8.5 inch bowl fits oversized cookware and maximizes your prep space.
- • **Versatile Dual Mount Installation:** Choose between flush or countertop mounting for seamless kitchen integration.

## Overview

The HARDSTONE Premium Quartz Kitchen Sink features a spacious 21x18x8.5 inch single bowl crafted from durable smoky black granite composite. Its matte finish resists stains and fingerprints, while the dual mount design offers flexible installation options. Built to withstand impact, heat, and noise, it includes stainless steel waste coupling and a flexible drain pipe. Backed by a 10-year warranty, this sink combines style, functionality, and lasting reliability for the discerning modern kitchen.

## Description

Product Description HARDSTONE Quartz Kitchen Sink (21 x 18 x 8.5 inch) Black Stone Square Quartz Single Bowl Kitchen Sink | Matt finish with Accessories (Waste Coupling and Waste Pipe) (BLACK) Spacious Single Bowl Deep sink for kitchen with tight radius corners and offset drain creates an uninterrupted workspace for washing your largest cookware. Real Stone Look Overall sink has a look of real stone with maximum resistance to impact and thermal shock also non porous material helps prevent food and liquid from sticking to sink surface. Smart Design Quartz granite kitchen sink has a smart design that adds valuable counter space by allowing you to work right over the sink and this is perfect for a kitchen of any size. Easy to Clean and Maintain The non porous surface of the quartz sink is resistant to stains, making it easy to clean and maintain. This feature is especially beneficial in a kitchen environment where spills and stains are common. Matte finish The sink features a beautiful black matte finish that gives it a sleek and modern look. This finish is easy to clean and does not show water spots or fingerprints. Soundproofing The sink has soundproofing technology that reduces noise from water and dishes, making for a more peaceful and comfortable kitchen environment. Single Bowl Kitchen Sink Eextremely Durable Materials kitchen sinks are constructed with quartz material for super sturdy and solidity, equipped with the highest scratch resistance, Further, it come with a coating that gives a classy look. Includes Essential Accessories The sink comes complete with essential accessories, streamlining your kitchen setup. Accessories like a drain strainer, grid, and mounting hardware are included, providing added value and ensuring you have everything you need for installation and maintenance. PRODUCT DESCRIPTION Material: Quartz Finish: Matte Product Size : 21D'' x 18W '' x 8.5H ''Inches / 45D x 53W x 22H Centimeters Anti corrosive, Impact resistant, and Rust Proof Heat and Impact Resistant Soundproofing Product Made in India

Review: Great quartz sink - Good product. Premium look for you kitchen.
Review: Nice product - Nice product at this price

## Features

- 𝐏𝐫𝐞𝐦𝐢𝐮𝐦 𝐒𝐦𝐨𝐤𝐲 𝐁𝐥𝐚𝐜𝐤 𝐀𝐞𝐬𝐭𝐡𝐞𝐭𝐢𝐜𝐬: This variant delivers a rich, matte black finish accented with micro-quartz particles. It creates a bold, ultra-modern contrast against lighter countertops and sleek metallic faucets.
- 𝐏𝐫𝐞𝐜𝐢𝐬𝐞 𝐃𝐞𝐞𝐩-𝐁𝐚𝐬𝐢𝐧 𝐃𝐢𝐦𝐞𝐧𝐬𝐢𝐨𝐧𝐬: The sink features a generous total length of 53 cm, a total width of 46 cm, and a deep 22 cm basin (approx. 21x18x8.5 inches). The spacious internal bowl measures 47 cm by 40 cm, leaving plenty of room for oversized cookware.
- 𝐈𝐧𝐬𝐭𝐚𝐥𝐥𝐚𝐭𝐢𝐨𝐧 𝐊𝐢𝐭 & 𝐃𝐮𝐚𝐥 𝐌𝐨𝐮𝐧𝐭𝐢𝐧𝐠: Built for seamless kitchen integration, the unit can be configured as an over-the-counter Counter Top Mount or a seamless Flush Mount. The complete setup package includes a premium square stainless steel waste coupling strainer and a flexible grey waste pipe.
- 𝐇𝐞𝐚𝐯𝐲-𝐃𝐮𝐭𝐲 𝐑𝐞𝐬𝐢𝐬𝐭𝐚𝐧𝐜𝐞 𝐏𝐚𝐜𝐤:Built from an exceptionally tough granite composite material, this sink features high durability against impact and a robust, fireproof composition. The thick composite structure also functions as a natural soundproof barrier to deaden water echoes and clattering dishes.
- 𝟏𝟎-𝐘𝐞𝐚𝐫 𝐖𝐚𝐫𝐫𝐚𝐧𝐭𝐲: Covered against leakage, manufacturing defects, cracking, chipping, warping, discoloration, and fading; if any covered defect arises during the warranty period, Hardstone will repair or replace the product at its sole discretion as per the company's warranty policy.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CFQFGBP8 |
| Best Sellers Rank | #2,986 in Home Improvement ( See Top 100 in Home Improvement ) #6 in Single Bowl |
| Brand | HARDSTONE |
| Brand Name | HARDSTONE |
| Colour | BLACK |
| Country of Publication | India |
| Customer Reviews | 4.3 out of 5 stars 184 Reviews |
| Drain Type | Pop-Up |
| Included Components | 1- Drain Coupling, 1- Drain Pipe, 1- Kitchen Sink, |
| Installation Type | Flush-mount, Under-mount and Top-mount |
| Item Dimensions D x W x H | 46D x 53W x 22H Centimeters |
| Item Type Name | Quartz Sink |
| Item Weight | 11 Kilograms |
| Manufacturer | HARDSTONE KITCHEN SINK |
| Manufacturer Warranty Description | 10 Years Warranty Against Any Manufacturing Defect |
| Material | Quartz |
| Material Type | Quartz |
| Model Number | 21x18_SMOKY_LACK |
| Packer Contact Information | Hardstone Contact: +91 99133 33900 |
| Product Care Instructions | Wipe with Dry Cloth |
| Product Dimensions | 46D x 53W x 22H Centimeters |
| Product Finish Type | Matt |
| Shape | Rectangular |
| Size | 21x18 |
| Style | casual |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** HARDSTONE
- **Colour:** Smoky Black
- **Material:** Quartz
- **Product Dimensions:** 46D x 53W x 22H Centimeters
- **Size:** 21x18

## Images

![HARDSTONE Premium Quartz Kitchen Sink 21x18x8.5 Inches | Smoky Black Granite Single Bowl Composite Sink with Stainless Steel Waste Coupling & Flexible Drain Pipe | Dual Mount | 10 Year Warranty - Image 1](https://m.media-amazon.com/images/I/61cgLJ-lu3L.jpg)
![HARDSTONE Premium Quartz Kitchen Sink 21x18x8.5 Inches | Smoky Black Granite Single Bowl Composite Sink with Stainless Steel Waste Coupling & Flexible Drain Pipe | Dual Mount | 10 Year Warranty - Image 2](https://m.media-amazon.com/images/I/612d6R-c6pL.jpg)
![HARDSTONE Premium Quartz Kitchen Sink 21x18x8.5 Inches | Smoky Black Granite Single Bowl Composite Sink with Stainless Steel Waste Coupling & Flexible Drain Pipe | Dual Mount | 10 Year Warranty - Image 3](https://m.media-amazon.com/images/I/51XWi1x+XuL.jpg)
![HARDSTONE Premium Quartz Kitchen Sink 21x18x8.5 Inches | Smoky Black Granite Single Bowl Composite Sink with Stainless Steel Waste Coupling & Flexible Drain Pipe | Dual Mount | 10 Year Warranty - Image 4](https://m.media-amazon.com/images/I/71yEq7MKU6L.jpg)
![HARDSTONE Premium Quartz Kitchen Sink 21x18x8.5 Inches | Smoky Black Granite Single Bowl Composite Sink with Stainless Steel Waste Coupling & Flexible Drain Pipe | Dual Mount | 10 Year Warranty - Image 5](https://m.media-amazon.com/images/I/81CLw1JkrRL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great quartz sink
*by A***P on 15 June 2026*

Good product. Premium look for you kitchen.

### ⭐⭐⭐⭐⭐ Nice product
*by H***M on 30 March 2026*

Nice product at this price

### ⭐⭐⭐⭐ Good product
*by M***S on 4 June 2026*

Good product

## Frequently Bought Together

- Hardstone Quartz Kitchen Sink (18 x 21 x 8.5 In, 10mm Thickness) – Mett Finish Single Bowl Sink with Waste Coupling & PVC Pipe – Smooth Finish, Non-Fading, UV Protection, Scratch & Heat Resistant
- CROCODILE 304 GRADE 24"x18"x10" Kitchen Sink, Satin Finish
- ALTON GRC3780 Brass Wall Mixer with Provision for Over Head Shower and 190mm Long Bend Pipe (Chrome)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-07*