Lucky Best Friends Ying Yang White Snowflake Quartz Black Agate Star Friendship Pendant Necklaces Best Amulets Collection. Lucky Best Friends Ying Yang White Snowflake Quartz and Black Agate Star Gemstones Friendship NecklacesLucky Best Friends Ying Yang White Snowflake Quartz Black Agate Star Friendship Pendant Necklaces Comes in Natural White Snowflake Quartz Heart and Black Agate Star Crystals Gemstones Size: Each Gemstone Star is 40mm x 40mm (1 1/2 inches) Each Star comes with Adjustable Cord Necklace, Shortest: 15 inches, Longest: 24 inches Comes with Branded Packaging