| Type |  Book |
| ชื่อเรื่อง | Ruby \& sapphire / by Richard W. Hughes |
| ผู้แต่ง | Hughes, Richard w |
| ISBN | 0 9645097 6 8 |
| พิมพลักษณ์ | Boulder, Colo. : RWH, c1997 |
| รูปเล่ม | 511 p. : ill. (some col.) ; 30 cm |
| หัวเรื่อง | Corundum --History, Identification, Value, Etc [] |
| | Crown jewels --History, Identification, Value, Etc [] |
| | Gems |
| | Gems --History, Identification, Value, Etc [] |
| | Jewelry --History, Identification, Value, Etc [] |
| | Lapidaries (Medieval literature) |
| | Corundum |
| | Sapphires |
| | Precious stones --History, Identification, Value, Etc [] |
| | Rubies |
| | Rubies --History, Identification, Value, Etc [] |
| | Sapphires --History, Identification, Value, Etc [] |