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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

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Blogs

Read more about diamonds, knowledge and the rich history of Royal Coster

Types of Diamond Jewelry

Solitaire diamond rings are timeless and elegant, showcasing the beauty of a single diamond. There are three primary settings for solitaire diamond rings: prong, bezel, and tension. Each has...

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The Importance of Diamond Jewelry Insurance - Royal Coster Diamonds

The Importance of Diamond Jewelry Insurance

Protecting your diamond jewelry involves understanding your insurance coverage. Homeowner’s and renter’s policies often cover theft, but it’s wise to review if they also include damage or loss.

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Understanding Various Varieties of Diamonds - Royal Coster Diamonds

Understanding Various Varieties of Diamonds

Lab-grown vs natural diamonds What are Lab-grown diamonds? Lab-grown diamonds, also commonly known as engineered diamonds or cultured diamonds, are created in a controlled laboratory environment. Unlike...

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Discovering the Source of Diamonds - Royal Coster Diamonds

Discovering the Source of Diamonds

Diamonds are the result of crystallized carbon formed under extreme pressure and heat, conditions that are only found deep beneath the Earth's surface (150...

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The enchanting world of birthstones: A guide to the gems of each month - Royal Coster Diamonds

The enchanting world of birthstones: A guide to the gems of each month

Birthstones have long been revered for their beauty and the unique qualities they are believed to bestow upon their wearers. From the deep red garnet of January to the...

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The 4C's of Diamond Valuation - Royal Coster Diamonds

The 4C's of Diamond Valuation

A diamond is the hardest natural material. It is formed deep inside the earth when carbon atoms are pressed together under high temperature and pressure, resulting in the formation...

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A Guide to Diamond Polishing: A Blend of Science and Craft - Royal Coster Diamonds

A Guide to Diamond Polishing: A Blend of Science and Craft

The 2nd C: The Color - Royal Coster Diamonds

The 2nd C: The Color

The color of a diamond –or rather the lack of it – tells us something about the value and quality of the diamond. A diamond that consists of carbon only...

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The 1st C: The Carat - Royal Coster Diamonds

The 1st C: The Carat

For many people, buying a diamond is not an everyday business. It seems quite difficult already. But if you dive deeper in the world of diamonds, it appears even harder...

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Brief History of Diamonds - Royal Coster Diamonds

Brief History of Diamonds

In the hectic days of constant rushing around, the little sparkle of a diamond helps you pause for a second and forget about the worries of the world. Take that...

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The 3rd C: Diamond Clarity - Royal Coster Diamonds

The 3rd C: Diamond Clarity

The 3rd of the four c’s we discuss in this series is the clarity of a diamond. A natural diamond is rarely without imperfections. It is a hallmark of Mother...

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The 4th C: Diamond Cut - Royal Coster Diamonds

The 4th C: Diamond Cut

The fourth of the four C’s in this sequence is the Cut, or shape of a diamond. The shape is important to determine the quality of the polished diamond. The...

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