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: Xtremegems Multi Color Solar Quartz Eye 925 Sterling Silver Ring Jewelry Size 6.5 4080R
Product description: Our merchandise comes directly from our manufactory and they are mainly hand-made, which makes our jewelry even more exceptional and unique. You can be assured of the best quality with unbelievable low price. XTREMEGEMS brings you a wide selection of one-of-a-kind artisan handcrafted jewelry featuring a diverse range of gorgeous gemstones in unique sterling silver settings. Each piece of XTREMEGEMS is individually designed and painstakingly crafted.
Product feature: 100% Solid Sterling Silver, Gemstone(s):Multi Color Solar Quartz Eye, Total Weight: 5.6 grams, Unique and handcrafted, actual item pictured, Order ships within 1 day from California, ASIN: B01BUU37GC, Date first listed on Amazon: February 17, 2016, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product brand: Xtremegems
Target attributes: Silhouette
Answer: attribute: silhouette
value: None
source: None