Royal Coster
Diamonds Size

MM / INCH (Circumference)

48 / 1.89

49 / 1.93

50 / 1.97

51 / 2.01

52 / 2.05

53 / 2.09

54 / 2.13

55 / 2.17

56 / 2.20

57 / 2.24

58 / 2.28

59 / 2.31

60 / 2.36

Discover your ring size
1. Download the pdf document below, set it to 100% and print it on A4 paper. You can measure the 5cm line to check the accuracy of the printed dimensions. 2. Check which circle matches the size of your ring. Make sure that the black circle is only visible within the ring. 3. If the ring is in between two circles (sizes), we recommend the larger size.
1. Download the pdf document below, set it to 100% and print it on A4 paper. You can measure the 5cm line to check the accuracy of the printed dimensions. Then, cut out the Finger Sizer. 2. Cut the small gold line. Wrap the sizer around the largest part of your finger and make sure it is tightened. 3. Read your ring size from the sizer. If your ring size is in between two circles (sizes), we recommend the larger size.

Measure an existing ring

Measure your finger

1. Download the pdf document below, set it to 100% and print it on A4 paper. You can measure the 5cm line to check the accuracy of the printed dimensions.

2. Check which circle matches the size of your ring. Make sure that the black circle is only visible within the ring.

1. Download the pdf document below, set it to 100% and print it on A4 paper. You can measure the 5cm line to check the accuracy of the printed dimensions. Then, cut out the Finger Sizer.

2. Cut the small gold line. Wrap the sizer around the largest part of your finger and make sure it is tightened.

3. Read your ring size from the sizer. If your ring size is in between two circles (sizes), we recommend the larger size.

News & Press

Royal Coster Diamonds gaat het Open Startbaan Toernooi 2023 extra glans geven.

Dit jaar mogen we ons de officiële hoofdsponsor noemen van het...

Read more
Officieel sponsor ARTZUID 2023

Als van oorsprong Amsterdams diamanthuis sponsoren we vol trots de achtste editie van de tweejaarlijkse beeldententoonstelling ARTZUID. Deze editie vindt plaats van 20 mei tot en met 24 september 2023...

Read more
odetoperfection
‘An Ode to Perfection’ exposition

'An ode to Perfection' expositieDe expositie ‘An Ode to Perfection’ neemt je mee in de wereld van diamant en slijpvorm. Centraal staat de Royal Coster 201: ‘the perfect balance’. Een...

Read more
Precautions Regarding the Coronavirus

COVID-19 has the world in its grip. We are now trying to find our way from an "intelligent lockdown" into the "New Normal". This also applies to Royal Coster Diamonds....

Read more

Your cart