Diamond is Mohs 10, which means it cannot be scratched by anything else a person is likely to encounter in daily life. That property is the physical basis for both its practical durability and its association with permanence.
Elemental Detail
Palladium, silver, and nickel are the metals that give 14kt white gold its color, each producing a different result: palladium alloys run warmer and hypoallergenic, nickel alloys achieve a brighter white but sensitize some wearers, silver contributes workability and is often combined with either.
Visually Speaking
What defines a cocktail ring is intention: a design conceived from the outset to be seen, scaled to draw the eye, and complete without accompaniment.