1LB=454g Please be reminded that due to light effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. Due to the manual measurement and different measurement methods, the actual size could be slightly different. If you get the one with "crack" on the surface,called "ice crack",this is normal for all crystal,and some may have the "cotton fibre",it is not very clear. If you mind this,Please don't place orders. Please kindly leave good feedback to us if you like our items. We guarantee your 100% satisfaction with our specimens and service. If you are not satisfied with the item upon receipt, please be sure to contact us first!