Your search for "three stone" revealed the following:

Oval Peridot Diamond Swirl August  Birthstone Pendant in Sterling Silver
Oval Peridot Diamond Swirl August Birthstone Pendant in Sterling Silver
$149.00 Compare at $299.00
Aquamarine and Diamond Halo March Birthstone Ring in Sterling Silver
Aquamarine and Diamond Halo March Birthstone Ring in Sterling Silver
$149.00 Compare at $299.00
Oval Ruby Diamond Swirl July Birthstone Pendant in Sterling Silver
Oval Ruby Diamond Swirl July Birthstone Pendant in Sterling Silver
$149.00 Compare at $299.00
Pearl and Diamond Halo June Birthstone Ring in Sterling Silver
Pearl and Diamond Halo June Birthstone Ring in Sterling Silver
$149.00 Compare at $299.00
Emerald and Diamond Halo May Birthstone Ring in Sterling Silver
Emerald and Diamond Halo May Birthstone Ring in Sterling Silver
$149.00 Compare at $299.00
Oval Sapphire Diamond Swirl September Birthstone Pendant in Sterling Silver
Oval Sapphire Diamond Swirl September Birthstone Pendant in Sterling Silver
$149.00 Compare at $299.00
Oval Blue Topaz Diamond Swirl December Birthstone Pendant in Sterling Silver
Oval Blue Topaz Diamond Swirl December Birthstone Pendant in Sterling Silver
$149.00 Compare at $299.00
14k White Gold Emerald-Shaped Ruby and Diamond Ring
14k White Gold Emerald-Shaped Ruby and Diamond Ring
$1,229.00 Compare at $1,759.00
Royal Blue Sapphire and Diamond Drop Station Necklace in 14K White Gold
Royal Blue Sapphire and Diamond Drop Station Necklace in 14K White Gold
$4,899.00 Compare at $6,999.00
14K White Gold Sapphire and Diamond Bar Necklace
14K White Gold Sapphire and Diamond Bar Necklace
$1,699.00 Compare at $2,399.00