Adjust for Daylight savings time if you need to.

*Hour of Birth*----*Birthstone*
 
1 ... (midnight until 1 am) Quartz
 
2 ... Hematite
 
3 ... Malachite
 
4 ... Lapis Lazuli
 
5 ... Turquoise
 
6 ... Tourmaline
 
7 ... Chrysolite (Peridot)
 
8 ... Amethyst
 
9 ... Kunzite
 
10 ... Sapphire
 
11 ... Garnet
 
12 ... (noon until 1 pm or 13:00) Diamond
 
13 ... Zircon
 
14 ... Emerald
 
15 ... Beryl
 
16 ... Topaz
 
17 ... Ruby
 
18 ... Opal
 
19 ... Sardonyx
 
20 ... Chalcedony
 
21 ... Jade
 
22 ... Jasper
 
23 ... Lode
 
24 ... Onyx