My ex-boyfriend gave me this necklace and I want to sell it, but I don't know how much to sell it for because I've no idea how much he spent on it. He was very impulsive and danced the line between a huge cheapskate and a big splurger, so he could've bought it for $10 but then again he could've bought it for $200, I've really no clue. I do know it was made by the Hopis and purchased in Arizona. It's made of turquoise and silver; it's never turned my neck green or anything and below the hallmark on the back of the piece it says "sterling". The hallmark is "MFC" arranged like this: http://tinypic.com/r/2mfez3r/5 . The front looks like this: http://tinypic.com/r/21kvypx/5 . And here's the back: http://tinypic.com/r/33jpr9f/5 .
My suggestion is to do a little research on line. I found a site that has what I think is likely comparable to what you have.
It looks to me that is is likely the value is somewhere between $25. and $35. at the most as far as I see. Your only showed us the pendant not the chain. So this value is more for the pendant.
Click through a few of the pendents on the web site below for one similar to yours. I saw one very similar to yours there but none exactly like it.
Good luck with your search.
Nathan Fred Sr. - Sterling Silver Overlay Belt Buckle - HOPI - VINTAGE RARE, Exquisite NAVAJO Signed ROBERT TAYLOR Bolo Tie '89 Sterling Silver Indian HOPI, Vtg 925 Sterling Silver Hopi Overlay Kokopelli Heavy 18+gm Necklace 24" IT Chain, Fabulous Vintage Large Signed Hopi Guild Sterling Silver Ring - Size 5.5, Hopi Ramon Dalangyawma Sterling Silver Sun & Corn Bracelet 120 grams 2" wide, Large Sterling Silver Bolo Tie Artist Signed, Kachina Hopi Navajo Zuni? No Res., Hopi sterling silver overlay ring Kokopelli design Size 12 Bunny hallmark, Vintage Hopi WATSON HONANIE Sterling Silver Overlay Bracelet, EARLY HOPI OVERLAY RING STERLING SILVER Pre-1970s SIZE 7.25 EXCELLENT, HOPI STERLING SILVER OVERLAY AND TURQUOISE RING - ROY TALAHAFTEWA, Early Hopi Coral Bisbee Turquoise Tufa Cast Coin or Sterling Silver Bracelet, EARLY-1970s FRANKLIN NAMINGHA, SR HOPI GUILD OVERLAY BEAR BUCKLE STERLING SILVER, ★HOPI Belt BUCKLE Sterling Silver Signed Ronald Wadsworth Native American Indian, ESTATE FOUND HOPI STERLING SILVER OVERLAY WAVES CUFF BRACELET, VINTAGE HOPI INDIAN L POLIVEMA STERLING SILVER OVERLAY WESTERN BELT BUCKLE EAGLE, Fine 1960's 1.5" Hopi Overlay Thunderbird Brooch Sterling Silver Navajo Zuni Pin, Exquisite 1930's Early HOPI Overlay Belt Buckle Sterling Silver Turquoise WOW!!, HOPI SIGNED MANUEL HOYUNGOWA STERLING SILVER & TURQUOISE CUFF BRACELET, Signed (Authur Allen Lomayestewa) Hopi Design Sterling Silver Ring, HOPI MAIDEN KACHINA OVERLAY STERLING SILVER BRACELET CUFF Marvin C. Lomaheftewa, VINTAGE STERLING SILVER HEAVY HOPI NATIVE AMERICAN LOMAY BRACELET , Vintage Hopi DAWAHOYA Sterling Silver Overlay Bolo Tie Kokopelli Flute Player, ANTIQUE STERLING SILVER SPOON HOPI SNAKE DANCE POTTERY GRAND CANYON AZ, VINTAGE STERLING SILVER MALACHITE HOPI NATIVE AMER BRACELET by TERRY WADSWORTH , HOPI Turquoise & Sterling Silver OVERLAY Pierced EARRINGS Long Dangle Shields, RARE Award Winning Watson Honanie 14kt/Sterling Silver Hopi Ring $525.00 NR, STERLING SILVER & TURQUOIS HOPI? CONCHO BRACELET SIGNED 13 GRAMS , NOT SCRAP, Vintage HOPI Sterling Silver OVERLAY EARRINGS Clip-On ROUND, Hopi Kokopelli Sterling Silver Pin Pendant Darin Silas, Vintage HOPI Sterling Silver Overlay BELT BUCKLE Floyd Namingha LOMAKUYVAYA,