Burglars raided a woman's home and escaped with a unique engagement ring which she had designed herself.
The ring was among a collection of jewellery which was stolen from the woman's home in Thurmaston.
Police said today the piece was unique and that the victim was "extremely distressed".
The white gold band has two diamonds and a sapphire set into it and bears the maker's marks GL and the hallmark London1978.
The woman's home in Thurmaston was burgled between 1.50pm on Friday, March 29 and 2.30am the following Sunday.
Other items stolen included a silver charm bracelet, with 50 charms, a silver necklace with a heart pendant inscribed with the words 'I love mum,' and various other necklaces.
Detective Constable Steve Briance said: "The victim has been left extremely distressed by the incident.
"The engagement ring was designed by the victim and is of great sentimental value to her.
"If you recognise the ring or you have been approached by someone trying to sell a similar item of jewellery either in person or online we urge you to get in touch, we would also appeal to pawn brokers and jewellers to contact us if you have been approached to sell or value a similar ring.
"If you witnessed anyone acting suspiciously in the Newark Road area, close to the junction with Lonsdale Road, during the Easter weekend then we urge you to contact us."
Anyone with information should contact Det Con Briance on 101, or call Crimestoppers, which is anonymous, on 0800 555 111.
