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Find Your Ring Size

Royal Coster
Diamonds Size
MM / INCH (Circumference)
48 / 1.89 48 4½ I½ 8
49 / 1.93 49 4¾ J¾ 9
50 / 1.97 50 5½ K 10
51 / 2.01 51 5¾ L 11
52 / 2.05 52 6 L½ 12
53 / 2.09 53 6¼ M½ 13
54 / 2.13 54 6¾ N½ 14
55 / 2.17 55 7¼ O 15
56 / 2.20 56 7½ P 16
57 / 2.24 57 8 P½ 17
58 / 2.28 58 8¼ Q½ 18
59 / 2.31 59 8¾ R 19
60 / 2.36 60 9 S 20

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574 Results

Diamond Necklace 0.16 Carat Baguette Cut with Brilliant 18K White Gold

Royal Coster Diamonds

£1,032.74

Unit price
per 

Diamond Necklace 0.26 Carat Brilliant Cut 18K White Gold

Royal Coster Diamonds

£1,103.95

Unit price
per 

Diamond Necklace 0.75 Carat Royal 201 Cut with Brilliant 18K White Gold

Royal Coster Diamonds

£5,840.28

Unit price
per 

Diamond Ring 0.10 Carat Baguette Cut 18K White Gold

Royal Coster Diamonds

£732.53

Unit price
per 

Diamond Ring 0.12 Carat Brilliant Cut 18K White Gold

Royal Coster Diamonds

£698.06

Unit price
per 

Diamond Ring 0.16 Carat Baguette Cut 18K White Gold

Royal Coster Diamonds

£1,034.16

Unit price
per 

Diamond Ring 0.16 Carat Brilliant Cut 18K Rose Gold

Royal Coster Diamonds

£1,551.24

Unit price
per 

Diamond Ring 0.16 Carat Brilliant Cut 18K Yellow Gold

Royal Coster Diamonds

£1,206.52

Unit price
per 

Diamond Ring 0.19 Carat Brilliant Cut 18K White Gold

Royal Coster Diamonds

£947.98

Unit price
per 

Diamond Ring 0.19 Carat Brilliant Cut 18K White Gold

Royal Coster Diamonds

£904.89

Unit price
per 

Diamond Ring 0.20 Carat Brilliant Cut 18K Yellow Gold

Royal Coster Diamonds

£1,508.15

Unit price
per 

Diamond Ring 0.20 Carat Heart Cut with Brilliant Cut 18K Rose Gold

Royal Coster Diamonds

£991.07

Unit price
per 

Diamond Ring 0.21 Carat Royal 201 Cut 18K White Gold

Royal Coster Diamonds

£1,068.35

Unit price
per 

Diamond Ring 0.22 Carat Brilliant Cut 18K White Gold

Royal Coster Diamonds

£1,335.79

Unit price
per 

Diamond Ring 0.22 Carat Marquise Cut with Brilliant Cut 18K Yellow Gold

Royal Coster Diamonds

£1,077.25

Unit price
per 

Diamond Ring 0.23 Carat Baguette Cut with Brilliant Cut 18K White Gold

Royal Coster Diamonds

£1,723.60

Unit price
per 

Diamond Ring 0.24 Carat Brilliant Cut 18K Yellow and White Gold

Royal Coster Diamonds

£1,077.25

Unit price
per 

Diamond Ring 0.24 Carat Marquise Cut with Brilliant Cut 18K Yellow Gold

Royal Coster Diamonds

£1,120.34

Unit price
per 

Diamond Ring 0.25 Carat Brilliant Cut 18K Rose Gold

Royal Coster Diamonds

£1,034.16

Unit price
per 

Diamond Ring 0.25 Carat Brilliant Cut 18K Yellow Gold

Royal Coster Diamonds

£1,551.24

Unit price
per 

Diamond Ring 0.26 Carat Baguette Cut with Brilliant Cut 18K White Gold

Royal Coster Diamonds

£1,163.43

Unit price
per 

Diamond Ring 0.28 Carat Royal 201 Cut 18K Yellow Gold

Royal Coster Diamonds

£1,495.68

Unit price
per 

Diamond Ring 0.29 Carat Brilliant Cut 18K White Gold

Royal Coster Diamonds

£2,111.41

Unit price
per 

Diamond Ring 0.30 Carat Brilliant Cut 18K Rose and White Gold

Royal Coster Diamonds

£1,421.97

Unit price
per 

Find your Signature ring

The Signature rings collection brings together the best rings from all of our signature collections. Whether it’s the bright colors of the Rainbow collection, the stylish Nikkie collection, the famous Royal 201 Signature C collection, the timeless Coster Classic collection, or the romantic rings from our Engagement and Wedding collection, every ring is chosen for its stunning look and fine quality.

This special collection is the very best we have. It includes many different designs, all made with the finest care and luxury in mind. Skilled craftsmen make each ring by hand, picking diamonds that shine and sparkle brightly. These signature rings show the top quality that we offer more than 180 years.

The Signature rings collection is perfect for someone who wants a ring that stands out. With everything from rings with many colors to simple and elegant designs, this collection lets you find the perfect ring that fits your own style and tells your personal story.

Get your dream ring

Whether you’ve set your eyes on an a wedding ring or a rainbow ring, we have what you’re looking for. We have many different ring settings. We can make one exactly how you want it and with the kind of diamonds you want. Contact us to find your dream rings.