LimitlessParts Co. ROUND 1.5 MM THICK FLAT SAPPHIRE CRYSTAL WATCH GLASS REPLACEMENT SIZE 16MM-50MM If you are not 100% satisfied with your purchase, you can return the product and get a full refund or exchange the product for another one, be it similar or not. You can return a product for up to 30 days from the date you purchased it. Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt.Fast ShippingPremium Quality FLAT-Round-Sapphire Crystal Glass- 1.5mm Thickness From 16.0mm – 50.0mm High quality Sapphire Glass Crystals with polished bevel edges. Each packaged in individual envelopes. Increments of 0.1mm These sapphire crystals are machined in Japan to a very high standard. Hardened with exceptional clarity. To determine the size you need please remove the outgoing crystal and measure with reliable calipers. PLEASE NOTE WE CANNOT ACCEPT RETURNS FOR BROKEN SAPPHIRE Sapphire crystals are more scratch resistant than mineral - but there is always the possibility of breakage when fitting which applies equally to sapphire glasses.