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21.72ct Fine Burmese Royal Blue Sapphire Cabochon Certified Unheated

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SKU: 73230007

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Product Type: Sapphire

Collections: all Gemstones Important Gems Sapphire

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Product Details

Weight: 21.72ct
Colour: Royal Blue
Origin: Burma
Dimensions: 20.2 x 14.6 x 6.5
Shape: Cabochon
Mineral: Natural Corundum
Clarity: VVS
Treatments: None - Lotus9675-5581
Hardness: 9

Birthstones

Hardness Chart

Gemstone(s) Mohs' Hardness
Diamond 10
Ruby, Sapphire 9
Chrysoberyl, Alexandrite 8 ½
Topaz, Spinel 8
Emerald, Aquamarine, Morganite, Zircon 7 ½
Hessonite, Pyrope, Almandine 7 ¼
Amethyst, Citrine, Tourmaline, Jadeite 7
Nephrite, Peridot, Demantoid 6 ½
Moonstone, Opal, Turquoise, Synthetic Glass 6
Apatite, Synthetic Glass 5
Flourite 4
Pearl, Coral 3 ½
Calcite 3
Amber, Ivory 2 ½
Gypsum 2
Talc 1

Ring Sizes

AU/UK US EU
C 1 ¾ 40 ½
D 2 ¼ 41 ½
E 2 ¾ 42 ¾
F 3 ¼ 44 ½
G 3 ¾ 45 ½
H 4 ¼ 46 ½
I 4 ¾ 47 ¾
J 5 ¼ 49 ½
K 5 ½ 50 ¼
L 6 51 ½
M 6 ½ 52 ½
N 7 54
O 7 ½ 55 ¼
P 8 56 ¼
Q 8 ½ 57 ½
R 8 ¾ 58 ½
S 9 ½ 60 ¼
T 9 ¾ 61 ½
U 10 ¼ 62 ½
V 10 ¾ 63 ¾
W 11 ¼ 65 ¼
X 11 ¾ 66 ¼
Y 12 ¼ 67 ½
Z 12 ¾ 68 ¾

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