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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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MONTBLANC

73 Results

1858 Automatic 40mm - Royal Coster Diamonds
1858 Automatic 40mm - Royal Coster Diamonds
Sale

1858 Automatic 40Mm

MONTBLANC

Regular price $2,671.91 $2,137.53

Unit price
per 

1858 Automatic 42mm - Royal Coster Diamonds
1858 Automatic 42mm - Royal Coster Diamonds
Sale

1858 Automatic 42Mm

MONTBLANC

Regular price $4,468.38 $3,574.70

Unit price
per 

1858 Geosphere Automatic 42mm - Royal Coster Diamonds
1858 Geosphere Automatic 42mm - Royal Coster Diamonds
Sale

1858 Geosphere Automatic 42Mm Black Dial

MONTBLANC

Regular price $5,471.48 $4,377.18

Unit price
per 

1858 Geosphere Automatic 42mm - Royal Coster Diamonds
1858 Geosphere Automatic 42mm - Royal Coster Diamonds
Sale

1858 Geosphere Automatic 42Mm Blue Dial

MONTBLANC

Regular price $5,745.05 $4,596.05

Unit price
per 

Bohème Date Automatic 30mm - Royal Coster Diamonds
Sale

Bohème Date Automatic 30Mm

Montblanc

Regular price $2,954.60 $2,363.68

Unit price
per 

Bohème Date Automatic 30Mm White Dial - Royal Coster Diamonds
Bohème Date Automatic 30mm - Royal Coster Diamonds
Sale

Bohème Date Automatic 30Mm White Dial

MONTBLANC

Regular price $5,197.90 $4,158.33

Unit price
per 

Bohème Date Quartz 27mm - Royal Coster Diamonds
Sale

Bohème Date Quartz 27Mm

MONTBLANC

Regular price $2,051.80 $1,231.08

Unit price
per 

Bohème Day & Night Automatic 34mm - Royal Coster Diamonds
Sale

Bohème Day & Night Automatic 34Mm

MONTBLANC

Regular price $3,738.85 $2,991.07

Unit price
per 

Bohème Moonphase Quartz 27mm - Royal Coster Diamonds
Sale

Bohème Moonphase Quartz 27Mm

MONTBLANC

Regular price $2,143.00 $1,285.80

Unit price
per 

Heritage Spirit Moonphase Automatic 39mm - Royal Coster Diamonds
Heritage Spirit Moonphase Automatic 39mm - Royal Coster Diamonds
Sale

Heritage Spirit Moonphase Automatic 39Mm

MONTBLANC

Regular price $4,559.57 $2,735.74

Unit price
per 

Meisterstuck Heritage Automatic 39mm - Royal Coster Diamonds
Sale

Meisterstuck Heritage Automatic 39Mm

MONTBLANC

Regular price $2,735.74 $1,641.44

Unit price
per 

Montblanc Belt and pocket holder 6cc gift set

MONTBLANC

$351.08

Unit price
per 

Montblanc Belts, Classic Lines, Square Shiny Palladium-Coated Pin Buckle - Royal Coster Diamonds
Sale

Montblanc Belts, Classic Lines, Square Shiny Palladium-Coated Pin Buckle

MONTBLANC

Regular price $278.14 $222.50

Unit price
per 

Montblanc Black cut-to-size casual belt

MONTBLANC

$300.93

Unit price
per 

Montblanc black/brown 30 mm reversible leather belt - Royal Coster Diamonds
Montblanc black/brown 30 mm reversible leather belt - Royal Coster Diamonds
Sale

Montblanc black/brown 30 mm reversible leather belt

MONTBLANC

Regular price $305.49 $244.40

Unit price
per 

Montblanc black/brown reversible cut-to-size casual belt - Royal Coster Diamonds
Sale

Montblanc black/brown reversible cut-to-size casual belt

MONTBLANC

Regular price $360.21 $288.17

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.