Holiday Return/Exchange Policy: For customers who purchase between now to December 25th, we will automatically extend the return/exchange date to January 31st. No restocking fee, no question ask, hassle free return. Conoscope Interference Sphere Ball for Polariscope The conoscope is a necessary tool for use with a polariscope. Our conoscope is a strain free glass ball held within a black plastic protective case with convenient handle. The conoscope is used for magnifying the view of the axis through a polariscope. The conoscope allows you to see 2-d representation of the 3-d interference of the axis within the gem. The axis and its visual image is also called the interference figure. Conoscopes are also called interference spheres or interference balls. Dimensions: 56 x 16 x 8 mm Lens: 10mm Warranty: 1 year We also have larger lens available for $19.99, please click HERE. Payments are accepted through Paypal. We ship through USPS Priority Mail from Oregon, west part of the country should receive in 1-3 days,middle part and east part of the country should receive in 2-4 days! International: We charge the same shipping cost to all our customers worldwide(same shipping cost worldwide). Our default shipping is United State Postal Service First Class mail, it take 5-10 business days for delivery. we also offer faster shipping EMS which take 3-6 days. Handing time: 1 business day. For payment received before 14:00PDT, it will ship in the same day. We do Combined Shipment on any multiple purchases. We are pleased to grant a20% discount on the shipping cost of purchases more than item. Please feel free to contact us for discounted shipping costs when you buy multiple items from us. MyStoreMaps improve local and international sales. We promise our best quality and the lowest price for our customers, if the item is not as the same as the description in the listing page, we will issue a exchange or full refund. if the item is the same as the description, we will charge a 15% restocking fee. We are a new seller , all our prices are really low compare to others, because we want to earn feedbacks. Please understand our feedback will be left once after we have received feedback from buyer. Our goal is to place a profit margin of $1 ~ $3 per item and sell in volume. As such, the more you save the more we make. While the others are selling 1 item, we are selling 10 ~ 20 items due to our price reduction. Please use the "Ask Seller A Question" button. Please allow up to 24 hours for a response. Usually the buyer will get response in 6 hours. Track Page Views With Auctiva's FREE Counter