14k Gold and Sterling Silver Pendant, Blue Topaz (1-3/8 ct. t.w.) and Diamond Accent

"From the Infinity Collection. A signature Yurman box chain of sterling silver is gracefully stationed with cable-and-smooth interlocking rings and sprinkled with tiny white pearls. 5.5mm white cultured freshwater pearls Sterling silver Length, about 44"" Toggle closure Imported"

"Delicate, faceted glass beads compliment the supple metallic leather cord. Glass beadsLeather cordLength, about 53½""Slip-on styleImported "

Over 100 science experiments

1,000 science problems

60 non-computer experiments

Hundreds of science reference screens

Teacher help print-outs