A Complete Guide to Buying Diamond Jewellery

A diamond is one of the most meaningful purchases you will ever make. Knowing a few fundamentals helps you pick a stone that is beautiful, certified and right for your budget.

Cut: The Source of Sparkle

Cut refers to how well a diamond's facets interact with light. An excellent cut can make a smaller diamond look brighter than a larger, poorly cut stone, so prioritise it above everything else.

Colour and Clarity

Diamonds are graded from D (colourless) to Z. Grades G–J look white to the eye and offer excellent value. For clarity, VS and SI grades are typically eye-clean and far more affordable than flawless stones.

Carat Weight

Carat measures weight, not size. Choosing a weight just below popular marks, such as 0.9 ct instead of 1 ct, can save a meaningful amount without a visible difference.

Always Ask for Certification

Insist on an independent grading report from a recognised laboratory such as IGI or GIA, and make sure the report number matches the inscription on the diamond's girdle.

“Buy the diamond, not the paperwork — but never buy a diamond without the paperwork.”

Combine these 4Cs with a setting you love, and you will have a piece that sparkles for generations.