A
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
Index
Nacre:
The crystalline substance secreted by an oyster to form a pearl. The microscopic crystals of nacre (pronounced
nay-ker
) refract light to produce a pearl's colour and lustre.
