Most gem-quality mined diamonds formed between one and three billion years ago, with the oldest known crystals reaching approximately 4.25 billion years, placing natural diamonds among the oldest physical objects a person can own.
A Notable Quality
Not all 18kt white gold is the same alloy. Palladium-based formulations are more compatible with sensitive skin than nickel-based ones, and manufacturers use both. Worth asking which you're selecting before purchase.
Visually Speaking
In a cocktail ring with a cluster or halo setting, multiple stones sit close enough together that the eye reads them as a single surface of light, producing the same visual weight as a larger stone through a different physical construction.