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Round|Natural|GIA

1.20ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2537779753

Certificate GIA 2537779753

Diamond specifications and retailer prices

From $3,325 NZD
As of November 6, 2026
Save $4,259 NZD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $9,171 NZD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2537779753. Listed at 18 retailers as of November 4, 2026, with a 128% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2537779753
Dimensions6.83 × 6.79 × 4.19 mm
L/W Ratio1.01
Top View
6.83 mm6.79 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2537779753
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.5%

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: $3,458 NZD|Low: $3,301 NZD|High: $7,777 NZD|Avg: $4,619 NZD|-2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 2$3,325 NZD
Retailer 1$3,458 NZD
Retailer 7$3,882 NZD
Retailer 10$4,006 NZD
Retailer 3$4,131 NZD
Retailer 4$4,387 NZD
Retailer 12$4,474 NZD
Retailer 9$4,566 NZD
Retailer 5$4,593 NZD
Retailer 6$4,629 NZD
Retailer 8$5,385 NZD
Retailer 11$7,584 NZD

38 data points across 12 retailers

18 retailers$3,325 NZD to $7,584 NZD

A
Cheapest Retailer
-
$3,325 NZD
A
Retailer 2
-
$3,458 NZD
View
A
Retailer 3
-
$3,882 NZD
View
B+
Retailer 4
-
$4,006 NZD
View
Final sale: no returns
B+
Retailer 5
-
$4,131 NZD
View
B+
Retailer 6
-
$4,158 NZD
View
Retailer 7
-
$4,387 NZD
View
Price last confirmed 39 days ago
Retailer 8
-
$4,387 NZD
View
Price last confirmed 36 days ago
B+
Retailer 9
-
$4,474 NZD
View
B+
Retailer 10
-
$4,566 NZD
View
Retailer 11
-
$4,589 NZD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$4,593 NZD
View
B+
Retailer 13
-
$4,629 NZD
View
Retailer 14
-
$5,062 NZD
View
Price last confirmed 38 days ago
B+
Retailer 15
-
$5,385 NZD
View
B
Retailer 16
-
$7,584 NZD
View
Retailer 17
-
$9,171 NZD
View
Price last confirmed 34 days ago
Most Expensive
NZ Jewellers
1419a2b3-5131-4a5f-b6a5-38c01a255356 · Sep 28
$9,171 NZD
$5,084 USD
View
Price last confirmed 39 days ago
17 more retailers have this diamond
Prices start from $3,325 NZDSave up to $4,259 NZD

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
$3,325 NZD