This is sunshine in a crystal! Lemon quartz is said to bless the wearer with the qualities of optimism, well being and creativity, in addition to all the normal qualities of clear quartz. It is said to support deep meditation and enhance focus on personal goals. It also helps the mind find clarity and a bright outlook.
The crystal pictured is the one you receive 
83.6g
82.7mm x 24.3mm x 25mm
All measurements are approximate