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Round|Natural|GIA

1.20ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1216036283

Certificate GIA 1216036283

Diamond specifications and retailer prices

From $4,254 AUD
As of November 6, 2026
Save $7,117 AUD (63%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $11,371 AUD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1216036283. Listed at 18 retailers as of November 5, 2026, with prices from $4,254 to $11,371, a $7,117 spread on the same certified stone. Diamond Quarter lists it at $11,371. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1216036283
Dimensions6.77 × 6.73 × 4.24 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Culet sizeNone
Top View
6.77 mm6.73 mm1.20 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1216036283
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,862 AUD|Low: $3,687 AUD|High: $8,951 AUD|Avg: $5,364 AUD|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11$4,254 AUD
Retailer 6$4,308 AUD
Retailer 9$4,424 AUD
Retailer 8$4,791 AUD
Retailer 10$4,791 AUD
Retailer 2$4,813 AUD
Retailer 1$4,862 AUD
Retailer 7$4,976 AUD
Retailer 3$5,529 AUD
Retailer 4$6,152 AUD
Retailer 5$8,821 AUD

42 data points across 11 retailers

18 retailers$4,254 AUD to $11,371 AUD

A
Cheapest Retailer
-
$4,254 AUD
A
Retailer 2
-
$4,308 AUD
View
B+
Retailer 3
-
$4,424 AUD
View
Final sale: no returns
B+
Retailer 4
-
$4,488 AUD
View
Retailer 5
-
$4,791 AUD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$4,791 AUD
View
B+
Retailer 7
-
$4,813 AUD
View
B+
Retailer 8
-
$4,862 AUD
View
B+
Retailer 9
-
$4,976 AUD
View
B+
Retailer 10
-
$5,210 AUD
View
B+
Retailer 11
-
$5,210 AUD
View
B+
Retailer 12
-
$5,385 AUD
View
B
Retailer 13
-
$5,529 AUD
View
Retailer 14
-
$5,990 AUD
View
Price last confirmed 14 days ago
B+
Retailer 15
-
$6,152 AUD
View
B
Retailer 16
-
$8,821 AUD
View
B
Retailer 17
-
$9,216 AUD
View
Most Expensive
B
Diamond Quarter
1.2SI2H1283D34AN · Nov 5
$11,371 AUD
£6,152 GBP
View
17 more retailers have this diamond
Prices start from $4,254 AUDSave up to $7,117 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.20ct Round
$4,254 AUD