Synthetic gems, the case for caution
By: by M. J. O'Donoghue.
Series: Special report - Worshipful Company of Goldsmiths, Technical Advisory Committee ; no. 30
Publisher: Worshipful Company of Goldsmiths
Published: 1976
Place of publication: London
Language: eng
Number of pages: 10
Subjects: Precious stones, Artificial.