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Why not explore our new Luna Collection?

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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AT THE HEART OF HAUTE HORLOGERIE

Whether you are looking for a brand new Omega Speedmaster Moonwatch, Longines Conquest or the Tag Heuer Aquaracer; Royal Coster has the watch for you. Browse through the brands listed below, contact a diamond consultant or walk in at our monumental villa's to browser our watch boutique or get personal advice.