Free shipping and insured in Europe.

Lifetime free cleaning and polishing.

Free resizing service.

Your cart

Your cart is empty

Why not explore our new Luna Collection?

Find Your Ring Size

Royal Coster
Diamonds Size
Internal Diameter / Circumference (mm)​
14,01
14,33
14,65
14,97
15,21
15,61
15,92
16,24
16,56
16,88
17,20
17,52
17,83
18,15
18,47
18,79
19,11

How To Measure

The Hands-on Method​ Measure an Existing Ring
  • 1. Grab a tape measure, length of string or strip of paper.
  • 2. 2. Wrap one of these objects around your finger. Mark the place where the two end of the measuring object come together.
  • 3. When using string or paper grab a ruler. Lay it on a flat surface and measure to where the marked point is.
  • 4. Use the chart presented above to acquire the correct ring size.
Signature collection Necklaces - Royal Coster Diamonds

Signature collection Necklaces

10 Results

Nikkie White Gold Solitaire Stud Necklace

Royal Coster Diamonds

€595,00

Unit price
per 

Nikkie Yellow Gold Solitaire Stud Necklace

Royal Coster Diamonds

€595,00

Unit price
per 

Four Prong Diamond Tennis Necklace 18K White Gold

Royal Coster Diamonds

from €34.500,00

Unit price
per 

Luna Deluxe Bezel Necklace 18K Gold

Royal Coster Diamonds

€1.500,00

Unit price
per 

Luna Attached Bezel Necklace 18K Gold

Royal Coster Diamonds

€940,00

Unit price
per 

Luna Classic Bezel Necklace 18K Gold

Royal Coster Diamonds

from €850,00

Unit price
per 

Luna Sliding Bezel Necklace 18K Gold

Royal Coster Diamonds

from €950,00

Unit price
per 

Luna Bezel (Multiple) Necklace 18K Gold

Royal Coster Diamonds

€900,00

Unit price
per 

Four Prong Graduated Diamond Tennis Necklace 18K Gold

Royal Coster Diamonds

from €14.995,00

Unit price
per 

"You Complete Me" Necklace

Royal Coster Diamonds

€690,00

Unit price
per