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Find Your Ring Size

Royal Coster
Diamonds Size
MM / INCH (Circumference)
48 / 1.89 48 4½ 8
49 / 1.93 49 9
50 / 1.97 50 K 10
51 / 2.01 51 L 11
52 / 2.05 52 6 12
53 / 2.09 53 13
54 / 2.13 54 14
55 / 2.17 55 O 15
56 / 2.20 56 P 16
57 / 2.24 57 8 17
58 / 2.28 58 18
59 / 2.31 59 R 19
60 / 2.36 60 9 S 20

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338 Results

Miriam Floral Ring 18K White Gold (small)

Royal Coster Diamonds

Regular price € 1.390 from € 1.182

Unit price
per 

Nikkie Solitaire Necklace

Royal Coster Diamonds

€ 840

Unit price
per 

Rainbow Hoop Earrings Brilliant Cut Diamond & Sapphire 18K Rose Gold

Royal Coster Diamonds

€ 2.500

Unit price
per 

Rainbow Ring Brilliant Cut Diamond & Sapphire 18K Rose Gold

Royal Coster Diamonds

€ 3.200

Unit price
per 

Miriam Floral Earrings White Gold

Royal Coster Diamonds

Regular price € 1.400 from € 1.190

Unit price
per 

Rainbow Intertwined Ring Brilliant Cut Diamond & Sapphire 18K Rose Gold

Royal Coster Diamonds

€ 2.650

Unit price
per 

Nikkie Cluster Ring

Royal Coster Diamonds

€ 845

Unit price
per 

Rainbow Hoop Huggie Earrings Brilliant Cut Diamond & Sapphire 18K Rose Gold

Royal Coster Diamonds

€ 2.300

Unit price
per 

Rainbow Mini Ring Brilliant Cut Diamond & Sapphire 18K Rose Gold

Royal Coster Diamonds

€ 1.850

Unit price
per 

Luna Raindrop Maxi Ring 18K White Gold

Royal Coster Diamonds

€ 2.350

Unit price
per 

Nikkie Solitaire Necklace

Royal Coster Diamonds

€ 840

Unit price
per 

Luna Dangling Necklace 18K White Gold

Royal Coster Diamonds

€ 900

Unit price
per 

Tennis Hoop Huggie Earrings White Gold

Royal Coster Diamonds

from € 1.750

Unit price
per 

Luna Bezel Solitaire Huggie Earrings 18K White Gold

Royal Coster Diamonds

from € 1.400

Unit price
per 

Nikkie Solitaire Bracelet

Royal Coster Diamonds

€ 575

Unit price
per 

Nikkie Solitaire Bracelet

Royal Coster Diamonds

€ 575

Unit price
per 

Luna Bezel Solitaire Necklace 18K Yellow Gold

Royal Coster Diamonds

from € 850

Unit price
per 

Solitaire 1.50 Carat Brilliant Cut Diamond 18K Gold Ring

Royal Coster Diamonds

€ 28.169

Unit price
per 

Nikkie Cluster Ring

Royal Coster Diamonds

€ 845

Unit price
per 

Luna Raindrop Necklace 18K White Gold

Royal Coster Diamonds

€ 2.250

Unit price
per 

Nikkie Solitaire Stud Earrings

Royal Coster Diamonds

€ 675

Unit price
per 

Luna Raindrop Bracelet 18K White Gold

Royal Coster Diamonds

€ 1.900

Unit price
per 

Four Prong Diagonally Diamond Tennis Bracelet 18K Gold

Royal Coster Diamonds

from € 13.490

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.