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Oval|Natural|GIA

1.20ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 6512783721

Certificate GIA 6512783721

Diamond specifications and retailer prices

From $5,356 AUD
As of November 6, 2026
Save $6,912 AUD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,268 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural oval diamond

This 1.2ct natural oval sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6512783721. Listed at 19 retailers as of November 5, 2026, with prices from $5,356 to $12,268, a $6,912 spread on the same certified stone. NZ Jewellers lists it at $12,268. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceStrong
Crown angle37.42°
Pavilion angle41.45°
OriginNatural
Grading LabGIA
CertificateGIA 6512783721
Dimensions8.39 × 6.03 × 3.78 mm
L/W Ratio1.39
Top View
8.39 mm6.03 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6512783721
Side View
Table 59.0%Crown 37.42°Girdle: MED-THKPavilion 41.45°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $12,268 AUD|Low: $5,356 AUD|High: $12,268 AUD|Avg: $7,448 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 5$5,356 AUD
Retailer 10$5,606 AUD
Retailer 7$5,613 AUD
Retailer 9$5,698 AUD
Retailer 3$6,379 AUD
Retailer 4$6,379 AUD
Retailer 11$6,379 AUD
Retailer 12$6,755 AUD
Retailer 6$6,891 AUD
Retailer 13$7,361 AUD
Retailer 2$7,925 AUD
Retailer 8$11,186 AUD
NZ Jewellers$12,268 AUD

42 data points across 13 retailers

19 retailers$5,356 AUD to $12,268 AUD

B+
Cheapest Retailer
-
$5,356 AUD
B+
Retailer 2
-
$5,501 AUD
View
B+
Retailer 3
-
$5,606 AUD
View
Final sale: no returns
B+
Retailer 4
-
$5,613 AUD
View
B+
Retailer 5
-
$5,627 AUD
View
B+
Retailer 6
-
$5,698 AUD
View
B+
Retailer 7
-
$6,021 AUD
View
B
Retailer 8
-
$6,379 AUD
View
Retailer 9
-
$6,379 AUD
View
Price last confirmed 8 days ago
B
Retailer 10
-
$6,379 AUD
View
B
Retailer 11
-
$6,484 AUD
View
B+
Retailer 12
-
$6,755 AUD
View
B+
Retailer 13
-
$6,891 AUD
View
B+
Retailer 14
-
$6,948 AUD
View
B
Retailer 15
-
$7,361 AUD
View
B
Retailer 16
-
$7,925 AUD
View
B
Retailer 17
-
$8,105 AUD
View
B
Retailer 18
-
$11,186 AUD
View
Most Expensive
B
NZ Jewellers
cd544772-3b57-44ce-ad10-b72fbde7a4b3 · Nov 5
$12,268 AUD
$8,429 USD
View
18 more retailers have this diamond
Prices start from $5,356 AUDSave up to $6,912 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.

B+
1.20ct Oval
$5,356 AUD