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

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.

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.

Home / News & Press / Precautions Regarding the Coronavirus

Precautions Regarding the Coronavirus

Sep 2, 2020

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. You were always used to our 'Royal Service'. But how will we provide this now, at the time of Corona? Don’t worry. Of course, you still receive the service you are used to from us. However, we took a number of measures to protect you and ourselves.

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Royal Coster Diamonds Size	MM / INCH (Circumference)
	48 / 1.89	48 4½ I½ 8
	49 / 1.93	49 4¾ J¾ 9
	50 / 1.97	50 5½ K 10
	51 / 2.01	51 5¾ L 11
	52 / 2.05	52 6 L½ 12
	53 / 2.09	53 6¼ M½ 13
	54 / 2.13	54 6¾ N½ 14
	55 / 2.17	55 7¼ O 15
	56 / 2.20	56 7½ P 16
	57 / 2.24	57 8 P½ 17
	58 / 2.28	58 8¼ Q½ 18
	59 / 2.31	59 8¾ R 19
	60 / 2.36	60 9 S 20

Discover your ring 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. 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.