Riakoob
Jewelry Guides
Riakoob jewelry guides: diamonds, the 4Cs, gemstones, metals, engagement rings, lab-grown diamonds and caring for your pieces.
Diamonds and the 4Cs
Learn how cut, colour, clarity and carat shape a diamond's beauty and price, and how natural and laboratory-grown diamonds differ.
Gemstones and metals
Understand sapphires, rubies, emeralds and more, plus the differences between gold karats, platinum and plated metals.
Buying and care
Read our guides on choosing an engagement ring, reading certificates, and keeping your jewelry looking its best.