Nicole A. Hosler, 20, of Middletown, is being sought on theft charges.
Police say Hosler was attending a function at a home in the 200 block of Century Drive in Smyrna on July 21st.
While there, police say, Hosler stole more than $11,000 in jewelry from the victims, a 31-year-old woman and a 32-year-old man.
Police say Hosler may be in the southern New Castle County, Delaware or Cecil County, Maryland area.
Investigators note that Hosler is also wanted by DNREC for theft under $1,500.
Anyone with information Hosler's whereabouts is asked to contact Detective Surowiec at 302-741-2814 or Delaware Crime Stoppers at 1-800-TIP-3333. Information may also be provided via the internet at www.tipsubmit.com. You can also send an anonymous tip by text to 274637 (CRIMES) using the keyword "DSP."