Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "Check out 3.78 CT. BLUE TOPAZ /GREEN PERIDOT IN .925 FANCY SILVER RING ! SIZE 7 -STRIKING!  https://t.co/5s9dufJ9B7 via @eBay" STOCK: nan DATE: nan
Sentiment: (Provide sentiment here)
Explanation: The tweet sentiment is related to the stock mentioned, and it's important to interpret the context. The LSTM polarity score is nan and the TextBlob polarity score is nan.