Glossary
Index
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B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Hardening
Hardening
is used to improve strength and color of colored gemstones. This is a professionally accepted method applied generally to all colored gemstones used for jewelry.
Read more:
Gemstone guide