Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: 925 Sterling Silver 4mm Square CZ Stud Earrings Purple Color Cubic Zirconia February Birthstone
Product description: Sparkling 4mm Princess Cut Violet Stud earrings at an attractive price. Made of Sterling Silver. It come with Post Friction back Earrings findings. Visit our store for more sizes and colors. Thanks for shopping Gem Avenue.
Product feature: SPECIFICATIONS: Pure 925 Sterling Silver. Nickel Free., FASHION: New, Unique jewelry suitable for everyday wear or party. Lightweight & beautiful, Simple gifts are always the best. Silver earrings make great stocking stuffers or impromptu gestures of affections. Silver Earrings are low key and easy to pair with outfits, so it makes a great year round gift for yourself or someone else. French wire, leverback, fish hook and many more earring styles all are beautiful and easy to pair., These earrings arrives in a free gift box. These earrings are perfect for your wife, girlfriend or soon to be fiance. Great for Christmas, anniversary, valentines or birthday gifts. Treat your loved ones to beautiful silver earrings., 30 day money back guarantee with any order. exceptional customer service. Gem Avenue is committed to making our customers happy. We inspect every item before shipping. We ship from the USA. Fast, secure and reliable delivery. Orders are shipped within 24 hours except on weekends., Product Dimensions: 2.6 x 1.6 x 0.7 inches, Shipping Weight: 0.48 ounces ( View shipping rates and policies ), ASIN: B0013GGC9S, Item model number: TDEZ2130-L, Date first listed on Amazon: January 13, 2015, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product price: $7.99
Product brand: Gem Avenue
Target attributes: Silhouette
Answer: attribute: silhouette
value: stud
source: product description
attribute: silhouette
value: stud
source: product title