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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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Watches - Royal Coster Diamonds

Watches

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.

313 Results

Captain Cook High-Tech Ceramic Diver 43Mm

RADO

$3,670.22

Unit price
per 

Conquest Automatic 39mm - Royal Coster Diamonds
Sale

Conquest Automatic 39Mm White Dial

LONGINES

Regular price $935.91 $748.72

Unit price
per 

Longines Mini Dolcevita Quartz 16mm Green dial

Longines

$3,716.09

Unit price
per 

Longines Mini Dolcevita quartz 16mm Blue dial

Longines

$3,716.09

Unit price
per 

Longines Mini Dolcevita Quartz 16mm Silver Dial

Longines

$1,605.72

Unit price
per 

Classics Quartz Chrono 40mm

FREDCONST

$871.67

Unit price
per 

Classics Heart Beat Moonphase Automatic 40mm

FREDCONST

$1,734.17

Unit price
per 

Classics Business Timer Quartz 40mm

Frederique Constant

$821.21

Unit price
per 

Tissot Lovely Quartz 19,5mm

TISSOT

$408.31

Unit price
per 

Longines Spirit Zulu Time 42mm Blue Dial

LONGINES

$3,211.43

Unit price
per 

Formula 1 x Red Bull Racing Quartz Chrono 43mm

Tag Heuer

$1,972.74

Unit price
per 

Classics Index Automatic 40mm

Frederique Constant

$821.21

Unit price
per 

Classics Index Automatic 40mm

Frederique Constant

$1,004.72

Unit price
per 

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.