Viewing under Halogen Light
The best light to view a diamond under is natural light, on a sunny day, coming from the north. This is when the diamond will show its true beauty and a sparkle consistent with what your fiancée will see everyday once she is wearing it.
If viewing under natural light is not possible and you are in the jeweller’s store or office, make sure that you are viewing the diamonds under a lamp that has a “natural light” bulb. Don’t view a diamond under a halogen bulb as it makes a diamond appear more sparkly than what it truly is under natural light.