Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Sorrelli "French Blush" Crystal Cluster Silvertone Dangle Earrings
Product description: BEHIND THE BRAND, What started nearly 30 years ago as a craft among sisters has grown into a treasure of coveted and collected jewelry called Sorrelli (derived from sorrelle, meaning sisters in Italian). Inspired by nature and the love that comes from bringing together family and friends, jewelry designer Lisa Oswald combines her vision for quality elements and timeless aesthetic to create for women everywhere the makings of stunning adornment., Sorrelli jewelry is about feeling special for any of lifes occasionsfrom everyday living to celebrating the most memorable timesand creating a life layered in sparkle., Sorrellis pieces are designed to become heirlooms, handed down through the generations. Sorrelli jewelry is handcrafted by skilled artisans, using semi-precious stones, featuring genuine Swarovski Elements. Each color collection features a unique mixture of semi-precious and synthetic cabochons and crystals, set in a variety of stunning finishes. Special use of coating and excellent crystal quality allows our jewelry to sparkle like no one else.
Product feature: To keep your jewelry looking its best, clean it periodically with a mild soap and water, A polishing cloth will keep the metal from oxidizing over time, Store in a dry place, Each piece of Sorrelli is stamped with the word Sorrelli or features a Sorrelli hangtag, Imported, Package Dimensions: 4.7 x 4.1 x 0.4 inches, Shipping Weight: 2.4 ounces, ASIN: B005OUDHCE, Item model number: ECK15ASFB, Date first listed on Amazon: November 9, 2011, Domestic Shipping: Item can be shipped within U.S., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 4.5 out of 5 stars 2 customer reviews
Product brand: Sorrelli
Target attributes: Silhouette
Answer: attribute: silhouette
value: dangle
source: product title