Blue Zircon and Diamond Ring
Total Diamond Weight 0.59ct
Colour-GH
Clarity-SI
Blue Zircons have a pleasing blue colour with just a tinge of green. This is one of the most popular colour in Zircons, and they are available from light to medium shades. More intense colours are rare.
They are not to be confused with Cubic Zirconia (CZ) which is man-made. Blue Zircons are mined in Cambodia. They come out of the ground in a brown to brownish-red colour and are then heated to their blue colours.
The name 'Zircon' derives from the Persian word 'zargun' meaning golden hued. Zircons (and possibly other gems) in the pinkish-purplish-reddish colour range were historically referred to as 'Hyacinth' or 'Jacinth'.
Zircons have extremely high dispersion of 0.038, which is the optical property that splits light into its component colours. That explains all those flashes of colour when we look at these beautiful gems.
Their refractive index (RI) is also very high ranging from 1.81 to 1.98 and they are durable with a hardness of 7-7.5 for 'high' zircons.
Natural Zircons are still available at a fraction of the price of most other gemstones, making them the last undervalued gem!
Zircon is December's birthstone, providing a lot of colour choice for December birthdays!
Size Chart
arrow_drop_downAt Crawford Hill Jewellery we use the inside diameter to measure ring size, which is the distance across the centre of the ring between its two inner edges (see image). You can determine your ring size by measuring the inside diameter of a ring you have at home. Then use the conversion table below to see what letter/ring size you are and choose that letter on the website when purchasing a ring. Alternatively, if your ring size isn’t available on our website or you are unsure about sizing you can contact us for any additional help or information. The ring size table below can be used to obtain the corresponding ring size for a certain inside diameter or to convert between US/Canada and British/New Zealand/Australia ring sizes. Please make sure you order the correct size, if you choose the wrong size and need resizing there is a $65 charge which includes resizing and courier. If you are still unsure about your correct size please email us info@crawfordhill.co.nz and we are happy to help.How To Find Your Ring Size
Ring Size Conversion Table
UK, Australia, NZ Ring Size
Inside Diameter (mm)
US & Canada Ring Size
A
12
1/2
A 1/2
12.2
3/4
B
12.4
1
B 1/2
12.6
1 1/4
C
12.8
1 1/2
C 1/2
13
1 3/4
D
13.2
2
D 1/2
13.4
2 1/4
E
13.6
2 1/2
E 1/2
13.8
2 3/4
F
14.1
3
F 1/2
14.2
3 1/8
G
14.4
3 3/8
G 1/2
14.6
3 5/8
H
14.7
3 3/4
H 1/2
14.9
4
I
15
4 1/4
I 1/2
15.3
4 1/2
J
15.4
4 5/8
J 1/2
15.7
5
K
15.8
5 1/8
K 1/2
16
5 3/8
L
16.1
5 1/2
L 1/2
16.4
5 7/8
M
16.5
6
M 1/2
16.7
6 1/4
N
16.9
6 1/2
N 1/2
17.1
6 3/4
O
17.4
7
O 1/2
17.5
7 1/4
P
17.8
7 1/2
Q 18.2 8 Q 1/2
18.4
8 1/4
R
18.6
8 5/8
R 1/2
18.8
8 7/8
S
19.1
9 1/8
S 1/2
19.3
9 3/8
T
19.5
9 5/8
T 1/2
19.8
10
U
20
10 1/4
U 1/2
20.2
10 1/2
V
20.3
10 5/8
V 1/2
20.7
11
W
20.8
11 1/8
W 1/2
20.9
11 3/8
X
21.2
11 5/8
X 1/2
21.3
11 7/8
Y
21.5
12
Y 1/2
21.7
12 1/4
Z
21.9
12 1/2
Z + 1/2
22.1
12 3/4
