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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

Solitaire 0.25 Carat Brilliant Cut Diamond 18K Gold Ring

Royal Coster Diamonds

€ 0

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Solitaire 0.50 Carat Brilliant Cut Diamond 18K Gold Ring

Royal Coster Diamonds

€ 0

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Solitaire 0.70 Carat Brilliant Cut Diamond 18K Gold Ring

Royal Coster Diamonds

€ 0

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Solitaire 0.70 Carat Brilliant Cut Diamond 18K Gold Ring

Royal Coster Diamonds

€ 0

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Solitaire 1.00 Carat Brilliant Cut Diamond 18K Gold Ring

Royal Coster Diamonds

€ 0

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per 

Solitaire 1.00 Carat Brilliant Cut Diamond 18K Gold Ring

Royal Coster Diamonds

€ 0

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per 

Spirit Automatic Chronometer 37Mm Silver Dial

Longines

€ 2,450

Unit price
per 

Spirit Chronograph Automatic 42Mm Black Matt Dial

Longines

€ 3,600

Unit price
per 

Spirit Collection Automatic 40mm Matt Black Dial

Longines

€ 2,450

Unit price
per 

Spirit Zulu Time 42mm Sunray Blue Dial

Longines

€ 3,500

Unit price
per 

Star Bracelet

Royal Coster Diamonds

€ 940

Unit price
per 

Star Earrings

Royal Coster Diamonds

€ 890

Unit price
per 

Star Earrings

Royal Coster Diamonds

€ 590

Unit price
per 

Star Legacy Small Second Automatic 32Mm - Royal Coster Diamonds
Sale

Star Legacy Small Second Automatic 32Mm

Montblanc

Regular price € 5,200 € 3,640

Unit price
per 

Star Necklace

Royal Coster Diamonds

€ 1,390

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per 

Star Necklace

Royal Coster Diamonds

€ 1,390

Unit price
per 

Star Necklace

Royal Coster Diamonds

€ 1,350

Unit price
per 

Star Necklace

Royal Coster Diamonds

€ 690

Unit price
per 

Star Necklace

Royal Coster Diamonds

€ 690

Unit price
per 

Submariner 16610LV ‘Kermit’

Rolex

€ 14,500

Unit price
per 

Submariner Date 126613LN

Rolex

€ 15,500

Unit price
per 

Tennis Game Bracelet

Royal Coster Diamonds

from € 4,650

Unit price
per 

Tennis Game Bracelet

Royal Coster Diamonds

from € 4,650

Unit price
per 

Tennis Game Earrings

Royal Coster Diamonds

from € 2,100

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.