Lifetime free cleaning and polishing service.

Free insured shipping in Europe.

Your cart

Your cart is empty

Bekijk deze collecties.

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

Discover your ring size

Measure an existing ring Measure your finger

Your Enquiry

Your Enquiry

DROP A HINT

Sender

Recipient

Signature Rings

The Signature rings collection brings together the best rings from all of our signature collections.

69 Results

Rainbow Ring Brilliant Cut Diamond & Sapphire 18K Rose Gold

Royal Coster Diamonds

$2,923.12

Unit price
per 

Rainbow Maxi Ring Brilliant Cut Diamond & Sapphire 18K Rose Gold

Royal Coster Diamonds

$3,745.24

Unit price
per 

Signature C Embellished Solitaire Ring

Royal Coster Diamonds

from $8,175.58

Unit price
per 

Signature C Solitaire Ring

Royal Coster Diamonds

from $2,055.31

Unit price
per 

Luna Bezel Solitaire Ring 18K Yellow Gold

Royal Coster Diamonds

from $502.42

Unit price
per 

Nikkie Cluster Ring

Royal Coster Diamonds

$771.89

Unit price
per 

Nikkie Cluster Ring

Royal Coster Diamonds

$771.89

Unit price
per 

Miriam Floral Ring 18K White Gold (small)

Royal Coster Diamonds

Regular price $1,269.73 from $1,079.73

Unit price
per 

Miriam Floral Ring 18K White Gold (big)

Royal Coster Diamonds

Regular price $1,826.94 from $1,552.91

Unit price
per 

Luna Raindrop Mini Ring 18K White Gold

Royal Coster Diamonds

$1,507.23

Unit price
per 

Luna Raindrop Ring 18K White Gold

Royal Coster Diamonds

$1,735.60

Unit price
per 

Willeke Half Eternity Ring 18K White Gold

Royal Coster Diamonds

Regular price $1,781.27 from $1,514.54

Unit price
per 

Luna Raindrop Maxi Ring 18K White Gold

Royal Coster Diamonds

$2,146.66

Unit price
per 

Tennis Half Eternity Ring Yellow Gold

Royal Coster Diamonds

from $1,598.58

Unit price
per 

Tennis Full Eternity Ring White Gold

Royal Coster Diamonds

from $1,689.93

Unit price
per 

14K Bi-Color Gold Diamond Cluster Brushed Wedding Ring

Royal Coster Diamonds

$1,918.30

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 ring.