Sizzling hot in rubies and rubellite high jewellery pieces by Chopard, Rihanna hosted and performed at the Clara Lionel Foundation Diamond Ball.

Rihanna, the sultry Barbadian pop princess, hosted and performed at the First Annual Diamond Ball for the Clara Lionel Foundation in Beverly Hills, California.

Glamorous in a highly feminine Hollywood star look, the pop star chose a becoming Zac Posen off-the-shoulder rose satin gown.

Perching just above her racy décolleté, the curvaceous singer flaunted a bright pink rubellite and diamond Chopard necklace.

Perching just above Rihanna's racy décolleté, the curvaceous singer flaunted a bright pink rubellite and diamond Chopard necklace.

The necklace, part of the Red Carpet collection, features a massive 123.24 carat pear-shaped rubellite offset with 65.24 carats of diamonds set in platinum. Guests attending the glamorous Diamond Ball at The Vineyard in Beverly Hills were also afforded a close-up view of her intricate Chopard bracelet. Also from the Red Carpet collection, it is set with 20.38 carats of rubies in rose gold and was last seen on the red carpet earlier in the year on the wrist of Cate Blanchett at the Screen Actors Guild awards.

With Chopard rings on her fingers embellished with rubellites, rubies, and tanzanite and cooled down with some high-voltage diamond rings, Rihanna was the very picture of a sparkling vie en rose.

Founded in 2012, the Diamond Ball is a black tie fundraising even benefitting the Clara Lionel Foundation designed to improve the quality of life for communities in the areas of health, education, arts and culture.

Chopard pear-shaped rubellite ring from the Red Carpet Collection, one of two handfuls of Chopard rings worn by Rihanna.

Glamorous in a highly feminine Hollywood star look, Rihanna accessorised her Zac Posen off-the-shoulder rose satin gown with Chopard high jewellery from the Red Carpet Collection.

With rings on her fingers by Chopard embellished with rubellites, rubies, and tanzanite and cooled down with some high voltage diamond rings, Rihanna was the very picture of a sparkling vie en rose.