Sombre Angelina Jolie is in a reflective mood as she lays down flowers at memorial to victims of Rwanda genocide

Angelina Jolie was in a reflective mood as she lay wreaths at the Gisozi genocide memorial in the Rwandan capital of Kigali on Sunday.
The 37-year-old star joined UK Foreign Secretary William Hague on Sunday in her capacity as UNHCR Goodwill Ambassador.
The ceremony took place close to the 19th anniversary of the country's 1994 genocide in which an estimated 800,000 victims died as a result of tribal violence between Hutus and Tutsis.          

Laying down flowers: Angelina Jolie lay wreaths Gisozi genocide memorial in Kigali, the capital of Rwanda on Sunday

With her light brown hair loose around her shoulders, the actress wore a black suit and top with minimal make-up teamed a simple gold necklace for the ceremony.
For her trip, Angelina was not wearing her extravagant $250,000 engagement ring from her fiancé Brad Pitt.
The star was spotted without her bling as she arrived first in Rwanda.and also paid a visit to the Democratic Republic of Congo.

Back to black: The actress sported  a black jacket over a black top and a simple gold necklace for her visit

Tribute: The actress was in reflective mood as she joined UK Foreign Secretary William Hague

Instead The Girl Interrupted star wore a more modest gold band on her wedding finger.
While there is no news that the couple have in fact already tied the knot, it appears that Angelina had merely exchanged the jewellery for her official UN work duties.
According to USA Today, Angelina was in the African country acting as a representative for the UN's refugee agency. 
Hague and the star met with survivors of rape and sexual violence, which is frequent in the country.

Ready for work: Angelina Jolie arrived in the Democratic Republic of Congo and Rwanda on Sunday night with British Foreign Secretary William Hague for some official United Nations duties

Their trip to central Africa was aimed at forcing the Group of Eight world powers to address the issue more seriously.
Hague said he would be making the issue his priority when he hosts the annual meeting of G8 foreign ministers next month in London.
'This visit is about hearing first hand from people who have endured rape and sexual violence during the conflict in the eastern DRC,' Angelina said.

'We want to learn the lessons that their experience holds for how the world can protect thousands of women, men and children at risk of rape in many other conflict zones.

Swapping rings: Angelina has been spotted wearing a less expensive version of her wedding ring during her recent trip to the Democratic Republic of Congo and Rwanda

Stunning: The ring in question (R) features an oblong-shaped rock which is inset into a thick ribbed band, but she has been wearing the plain ring (L) for the trip

'And we want to persuade governments around the world to give this issue the attention it deserves.
Unless the world acts, we will always be reacting to atrocities, treating survivors rather than preventing rape in the first place.'
Angelina and Mr Hague are calling on the G8 to agree that rape and sexual violence constitute breaches of the Geneva Conventions governing warfare.
They also want a new international protocol on the documentation and investigation of the issue.

A handout photo released on Philanthropist: Angelina sits next to Foreign Secretary William Hague as they listen to refugees during a visit to he Nzolo refugee camp

She's not showy: Jolie probably decided to leave the proper engagement ring at home to not parade her expensive jewellery items around

'More often than not the international community looks away, the perpetrators of these brutal crimes walk free and the cycle of injustice and conflict is repeated. We have to shatter this culture of impunity,' Hague said.
'It is time for real, meaningful action by the governments of the world to say that the use of rape as a weapon of war is unacceptable, to bring perpetrators to justice and to lift the stigma from survivors.
'This is my personal priority for the meeting of G8 foreign ministers.'
The campaign will also be taken to the UN Security Council in June and the UN General Assembly in September.

Discussions on solutions to the conflict with political leaders are also set to take place.

UN tasks: The Hollywood actress looked interested as she paid attention to what the refugees had to say

Going solo: She appears to be in the country minus fiance Brad Pitt and their large brood of children

While Angelina travels on official UN duties, her $250,000 engagement ring, which took her fiancé Brad a year to design, is most likely locked up in a safe.  
The ring features an oblong-shaped rock which is inset into a thick ribbed band.
Pitt designed the ring for the mother of his six children in collaboration with jeweller Robert Procop who broke the news of the engagement in a statement last year.
He said: 'Brad had a specific vision for this ring, which he realised over a year-long collaboration with Robert,' Procop’s team said in a statement. 'He wanted every aspect of it to be perfect.'
The Hollywood power couple later confirmed their engagement in a statement - and their six children were said to be especially happy about the news.

Joint efforts: Both Angelina and William wore lightweight white shirts for the visit on Tuesday as part of the special trip

Taking the role seriously: Jolie joined British Foreign Secretary William Hague on a visit to the Democratic Republic of Congo on Monday in a bid to encourage world powers to do more to tackle rape and sexual assault in war zones

Their spokeswoman said: 'It is a promise for the future and their kids are very happy. There's no date set at this time.'
Procop said: 'Brad had a specific vision for this ring, which he realised over a yearlong collaboration. He wanted every aspect of it to be perfect, so I was able to locate a diamond of the finest quality and cut it to an exact custom size and shape to suite Angelina's hand.
The couple are thought to have not yet tied the knot after several rumours emerged regarding planned dates in the last few months.
Angelina has been married twice before - to British actor Jonny Lee Miller between 1996 and 1999 and then Billy Bob Thornton, from 2000 to 2003.

Family affair: Brad and Angelina out with their brood in London back in December