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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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The story of the Miriam Ring - Royal Coster Diamonds

The story of the Miriam Ring

In 1951, diamond cutter Wim Biallosterski bought Coster Diamonds. It was a few years after World War II and the people of Amsterdam slowly started to get back on their feet. Wim gave a new boost to Coster Diamonds. He created a close and warm team that almost felt like a family. Just like how Coster Diamonds initially was in 1840.

Who is Miriam?

One of the people who became part of the team was his daughter, Miriam Biallosterski. Miriam quickly became one of the top sales reps. She sold all sorts of diamonds and pieces of jewelry. But there was one ring she sold the most. It was a diamond entourage ring. The flower-shaped ring that was part of our basic collection. It came in many different sizes and colors. Miriam adored this ring. In fact, she wore one herself as well. Over the years, people started referring to it as “the Miriam Ring”. Miriam became the embodiment of this specific ring.

What does it look like?

Even now, 60 years later, we can still see why Miriam loved this ring so much. Even today, this ring is one of our most popular designs. We consider it one of our Coster Classics because of its timeless design. The ring has one diamond as a center stone and six or eight – slightly smaller – diamonds around it. It has a split-shank, which gives the ring an open and elegant shape. The beauty of this ring is that it comes in many different sizes and prices. Whether you have a big budget or a limited one, there is always a Miriam ring in your price range.

Fun fact

Eleven years after Wim Biallosterski, Ben Meier became CEO of Coster Diamonds. Coincidentally, he also had a daughter named Miriam. And Mirjam Meier also became a sales representative at Coster. So when people spoke about the Miriam ring, many assumed it was because of Ben’s daughter. But the real story is that the Miriam ring is a tribute to the daughter of the man who built Coster back up after the war.

Get your Miriam ring

Are you interested in the ring with this beautiful background story? Or perhaps curious about the other Coster Classics? Contact our diamond consultants. They can tell you even more about this special ring and provide you with all the available options.
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