FKA Twigs' engagement ring is worth up to $100,000.

The singer - who is believed to be engaged to 'Twilight' actor Robert Pattinson - flashed a particularly impressive sparkly ring when they rocked up together at the Met Gala in New York this week.

Jeweller Mark Keeney Ritani has estimated the sparkler could cost up to £65,000, told RadarOnline.com: ''The setting is most likely platinum, the favoured metal for art deco jewellery. Depending on the quality of the stones, this engagement ring could be worth between $40k-$100k.''

He continued: ''FKA Twigs' ring looks to be a custom style, possibly vintage. It features a pear-shaped diamond, which looks to be between one and two carats, set in a French-set halo.''

The pair looked happier than ever at the Met Gala on Monday (03.05.15) following reports R-Patz popped the question after just six months of dating.

It also looks likely that the loved-up couple could be getting hitched soon, with reports the pair aim to tie the knot in a low-key ceremony in London.

This week it was claimed Twigs - real name Tahliah Debrett Barnett - wants to get married sooner rather than later and have what she's calling a ''bangers and mash'' wedding.

A source said: ''She'd like a low-key registry office ceremony, pub lunch and party with their friends. They're talking about August.''