There are plenty of ways to put an A-list-worthy ring on it at Blue Nile, a retailer known for its sweeping selection of both ...

If you want to customize your ring, Blue Nile is a great option. Right now, you can browse a selection of lab-grown diamonds for 30% off and sort by price, shape, size, color, clarity and cut.

These high-value gems are now surprisingly within reach – if you go for the variety with different origins (but are still genuine).