Washington, Feb 18 : Christina Aguilera, who got engaged to her longtime boyfriend Matt Rutler on Valentine's Day, has posted a photo of her enormous, elaborate engagement ring on Twitter.

A source said Rutler spent over a year designing the ring, carefully choosing each stone to represent different facets of his three-year relationship with Aguilera, People magazine reported.

The insider said that every single placement of each stone has a reason and meaning, for example: the actual band weaves and intertwines the diamonds. Every connecting criss-cross symbolizes how their paths crossed and the ring narrows at the base [to] reflect how their bond continues to grow closer and stronger over time

The source added that there are nine special multi-color gemstones that you cannot see. They all symbolize something meaningful to the couple. (ANI)