Best Cushion Loose Diamonds of 2026

John Zimmer Avatar
John Zimmer
Last Updated: 10 Feb 2026

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Cushion loose diamonds are a popular choice for those looking to create their own unique piece of jewellery or add to an existing one. These diamonds have a distinct square or rectangular shape with rounded corners, giving them a soft, elegant appearance. They come in a variety of sizes, colours, and clarity grades, allowing for a wide range of options to suit any taste and budget. Whether you're looking to create a timeless engagement ring or a statement necklace, cushion loose diamonds are a versatile and beautiful choice.

At a Glance: Our Top Picks

SAVEARTH DIAMONDS Moissanite Loose Diamonds Collection Cover #TOP 1
SAVEARTH DIAMONDS Moissanite Loose Diamonds Collection
ftb score rating icon 9.8
6x6MM Cushion Cabochon Ethiopian Black Opal Cover #TOP 2
6x6MM Cushion Cabochon Ethiopian Black Opal
ftb score rating icon 9.7
REAL-GEMS 115 Ct Blue Cushion Zircon Gemstone Cover #TOP 3
REAL-GEMS 115 Ct Blue Cushion Zircon Gemstone
ftb score rating icon 9.5

Top 5 Cushion Loose Diamonds

#TOP 1

SAVEARTH DIAMONDS Moissanite Loose Diamonds Collection

SAVEARTH DIAMONDS
MNo-I-LD-CUSHION-MOI-7.5MM
SAVEARTH DIAMONDS Moissanite Loose Diamonds Collection Cover
SAVEARTH DIAMONDS (Round, Princess, Pear, Oval, Cushion, Emerald, Asscher, Heart, stone, moissanite

The SAVEARTH Moissanite Diamonds offer stunning lab-created stones with excellent clarity and cut, perfect for your jewellery projects. Featuring a 7.5MM cushion shape, these diamonds boast a VVS1 clarity and G-H colour, ensuring a bright and lively appearance. You can enjoy the beauty of these stones as an affordable alternative to real diamonds, making them ideal for creating promise rings, engagement rings, and stud earrings. Their versatility lends well to jewellers and hobbyists alike, allowing for creativity without stretching your budget.

What We Like
High clarity and cut quality
Affordable diamond alternative
Versatile for various jewellery types
Suitable for DIY jewellery making

6x6MM Cushion Cabochon Ethiopian Black Opal

WWG-OPAL-LOOSE-6488
6x6MM
6x6MM Cushion Cabochon Ethiopian Black Opal Cover
6x6MM Ethiopian Black Opal,1Pcs Cabochon Rare Quality Ethiopian Black Opal,1Pcs CUSHION Cabochon Ethiopian Opal Cabochon Natural welo opal multi fire opal loose Gemstone for Jewelry Making

The Ethiopian Black Opal Cabochon is a stunning gemstone measuring 6x6MM, cut into a beautiful cushion shape. Its natural beauty is enhanced by a flat polished backside, making it perfect for jewellery making. The vivid colours, as seen in the pictures, can effortlessly elevate your outfits, whether you’re dressing up for a special occasion or adding flair to everyday wear. This gemstone is an exquisite choice for anyone looking to create unique jewellery pieces that showcase elegance and individuality.

What We Like
Rare and beautiful gemstone
Ideal for jewellery making
Elegant cushion shape
Flat polished backside
Vibrant colours

REAL-GEMS 115 Ct Blue Cushion Zircon Gemstone

N-121
Blue
Small
REAL-GEMS 115 Ct Blue Cushion Zircon Gemstone Cover
REAL-GEMS 115 Ct. Zircon Cushion Shape Loose Gemstone, Blue Color Faceted Zircon Stone

The REAL-GEMS Blue Zircon is a sizeable 115 Ct loose gemstone, measuring 23 mm by 22 mm by 13 mm, offering a substantial presence for your jewellery projects. Its beautiful blue colour is part of zircon’s diverse palette, which includes yellow, green, red, and brown hues, making it a favourite for collectors and jewellery enthusiasts alike. This gemstone is of high quality, verified by expert gemologists to ensure you receive a top-grade stone. Additionally, zircon can be heat-treated to restore its crystal structure, enhancing its durability and appearance for long-lasting enjoyment.

What We Like
Large 115 Ct weight
Attractive blue colour
High-quality certified stone
Durable with heat treatment
#TOP 4

REAL-GEMS 106 Ct Red Cushion Zircon Gemstone

N-72
Small
REAL-GEMS 106 Ct Red Cushion Zircon Gemstone Cover
REAL-GEMS 106 Ct. Zircon Cushion Shape Loose Gemstone, Red Color Faceted Zircon Stone

The REAL-GEMS 106 Ct Zircon is a large, cushion-shaped loose gemstone measuring 22 by 21 by 14 mm, which makes it ideal for creating standout jewellery pieces. This red zircon offers a beautiful and rich colour, part of a wide range of hues that make it popular among collectors and jewellery lovers alike. The stone's crystal structure can be enhanced through high-temperature heat treatment, ensuring it maintains its brilliance and durability. Verified by expert gemologists, this high-quality zircon gives you confidence in the authenticity and excellence of your gemstone.

What We Like
Large 106 Ct size
Vibrant red colour
Enhanced crystal structure
Verified high quality
#TOP 5

REAL-GEMS 118.00 Ct Multi Colour Ametrine Gemstone

FL-480
Multi-color
REAL-GEMS 118.00 Ct Multi Colour Ametrine Gemstone Cover
REAL-GEMS 118.00 Ct Multi Color Ametrine Cushion Shaped Gemstone

The REAL-GEMS Ametrine Gemstone is a stunning hydro gem that offers the beauty of natural stones with synthetic reliability. This gemstone is crafted in a lab, ensuring it has the same properties as its natural counterparts. Its unique composition makes it beneficial for personal relationships, possibly enhancing your love life. With top-quality selection from expert gemologists, you can trust in its exceptional quality. Perfect for jewellers, designers, or as a thoughtful gift, this gemstone provides a unique and vibrant addition to any collection.

What We Like
High-quality AAA Grade gemstone
Unique and vibrant appearance
Benefits personal relationships
Ideal for jewellers and designers
Expertly selected by gemologists
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Is cushion cut a good diamond?

Then, cushion cut diamonds are still quite brilliant, but are less brilliant than round diamonds. However, due to their larger facets, they also tend to have more fire. Many people love the high fire of a cushion cut diamond, while others prefer the high overall brilliance of round diamonds.

2. Is a cushion cut diamond more expensive?

Round is the most expensive diamond shape, so round cut diamonds are more expensive than cushion cut diamonds. Wondering how these shapes compare in price? On average, a cushion cut diamond will cost 25% to 50% less than a round cut diamond with the same carat weight and qualities.

3. What is a cushion diamond?

The cushion cut diamond once referred to as old mine cut) combines a square cut with rounded corners, much like a pillow (hence the name). This classic cut has been around for almost 200 years, and for the first century of its existence was the most popular diamond shape (similar to round cut today).

4. Are elongated cushion cut diamonds rare?

Are elongated cushion diamonds rare? The longer the cushion, the rarer the diamond! Diamonds that are only a little elongated, around 1.10 and below, are common. Stones between 1.11 and 1.18 are rarer, while stones above 1.19 are pretty hard to come by.

Editor's Notes

During our cushion loose diamond research, we found 66 cushion loose diamond products and shortlisted 5 quality products. We collected and analyzed 2,381 customer reviews through our big data system to write the cushion loose diamonds list. We found that most customers choose cushion loose diamonds with an average price of £36.90.

The cushion loose diamonds are available for purchase. We have researched hundreds of brands and picked the top brands of cushion loose diamonds, including SAVEARTH DIAMONDS, WORLD WIDE GEMS, REAL-GEMS.

Written by
John Zimmer Avatar

John Zimmer is a truly professional writer on findthisbest.com. He has specialized in writing content a wide variety of fields for over a decade. Since 2011, he has been using his expertise and extensive experience to write content for online shopping guide websites. In addition to writing for findthisbest.com, he has appeared in publications such as The Spruce, Wirecutter and Bestbuy.