Metal: Crafted in 9K Yellow or White Gold 
Chain: Solid 1.3mm heavy-weight diamond-cut cable chain, one size only with 16.5cm and 18cm jump rings
Marquise dimension: 6x3mm
Diamond grade: F-G/VS
Gemstone grade: A/AA

Birthstone guide:
Garnet = January
Amethyst = February
Aquamarine = March
Diamond = April
Emerald = May
Moonstone = June
Ruby = July
Peridot = August
Sapphire = September
Opal = October
Citrine = November
Tanzanite = December