The 7Cs: Gemfields’ practical guide to coloured gemstones

As a world-leading responsible miner and marketer of coloured gemstones, and the majority owner and operator of the Kagem emerald mine in Zambia and the Montepuez ruby mine in Mozambique, Gemfields is well-positioned to guide consumers when it comes to appreciating coloured gemstones.

It all starts with colour, which simultaneously conveys beauty and rarity. A gem’s hue is the basic colour you observe, its lightness or darkness, or how vivid it is, will be described by tone and saturation, respectively.

Next is clarity. This shines a light on inclusions within each gemstone, which reveal its origin. A desirable gemstone will feature inclusions that don’t stand out too proudly but silently contribute to its beauty.

The cut of a gem refers to its outline shape (round, pear, oval, etc) and faceting style (brilliant-cut, step-cut, etc). The faceting style gives the gemstone its unique flair as it significantly influences its final brilliance and appearance.

Carat is a universally recognised weight measurement for gemstones and often a key factor in determining its value, as generally speaking, larger gems are often rarer and dearer.

A certified report verifies the identity, authenticity and geographical origin of a gemstone and details of any treatments it may have received.

Confidence is about connecting with the person you are purchasing from and gaining an understanding of your gem’s journey and impact, so you can feel proud of the gem you own.

Finally, character ties together all the Cs as it recognises that the beauty of gemstones goes beyond measurable qualities. The main trait of character in a gem is, therefore, not contingent on its monetary value or the conventional notion of quality associated with a specific gem variety, it’s about celebrating individuality.  It’s about choosing the gem you really fall in love with.

Discover our 7Cs guide here.