Hi colpoole1 and welcome.
How long have you had the necklace? Are you thinking of selling it? The photo is not close enough to see the quality of the pearls. Does it say on the sales slip what the grade is? What else can you tell us about it? Does it show wear?
Unfortunately, the resale value of pearls is usually quite a bit less than one paid at retail.
Sometimes one can find comparables on ebay, but not always.
A 24 inch necklace is a very nice length. If you would like to show us more photos, please use the macro on your camera and a white paper towel or napkin as background. thank you