Double D
What type of jambiya is it? Yemeni, Omani, Wahabite? Jambiyas come in many different styles and they can vary in quality. Some are covered in real silver while others could be covered in white metal or brass. Is the hilt horn or wood or bone? I just posted some pics of to very nice quality Yemeni jambiyas a couple of days ago. Here is the link so you can get an idea of what to look for.
http://www.vikingsword.com/vb/showthread.php?t=2578
Lew