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Round|Natural|GIA

1.20ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2507070551

Certificate GIA 2507070551

Diamond specifications and retailer prices

From $2,700 NZD
As of November 6, 2026
Save $6,081 NZD (69%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,781 NZD at NZ Jewellers · As of November 5, 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 2507070551. Listed at 19 retailers as of November 5, 2026, with prices from $2,700 to $8,781, a $6,081 spread on the same certified stone. NZ Jewellers lists it at $8,781. 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 angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2507070551
Dimensions6.77 × 6.73 × 4.26 mm
L/W Ratio1.01
Star length55%
Lower girdle75%
Top View
6.77 mm6.73 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2507070551
Side View
Table 56.0%Crown 36°Girdle: Sli. ThickPavilion 41.2°Culet: NoneDepth 63.3%

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: $8,781 NZD|Low: $2,677 NZD|High: $8,781 NZD|Avg: $4,101 NZD
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 16$2,700 NZD
Retailer 2$2,724 NZD
Retailer 15$3,166 NZD
Retailer 7$3,252 NZD
Retailer 10$3,418 NZD
Retailer 11$3,444 NZD
Retailer 8$3,577 NZD
Retailer 6$3,601 NZD
Retailer 17$3,601 NZD
Retailer 18$3,767 NZD
Retailer 9$3,770 NZD
Retailer 5$3,848 NZD
Retailer 12$3,887 NZD
Retailer 4$4,154 NZD
Retailer 13$4,625 NZD
Retailer 3$5,242 NZD
Retailer 14$6,290 NZD
NZ Jewellers$8,781 NZD

23 data points across 18 retailers

19 retailers$2,700 NZD to $8,781 NZD

A
Cheapest Retailer
-
$2,700 NZD
A
Retailer 2
-
$2,724 NZD
View
A
Retailer 3
-
$3,166 NZD
View
A
Retailer 4
-
$3,252 NZD
View
Retailer 5
-
$3,265 NZD
View
Price last confirmed 109 days ago
Retailer 6
-
$3,418 NZD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$3,444 NZD
View
A
Retailer 8
-
$3,577 NZD
View
B+
Retailer 9
-
$3,601 NZD
View
Retailer 10
-
$3,601 NZD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$3,767 NZD
View
Retailer 12
-
$3,770 NZD
View
Price last confirmed 10 days ago
B+
Retailer 13
-
$3,848 NZD
View
B+
Retailer 14
-
$3,887 NZD
View
B+
Retailer 15
-
$4,154 NZD
View
B+
Retailer 16
-
$4,625 NZD
View
B
Retailer 17
-
$5,242 NZD
View
B
Retailer 18
-
$6,290 NZD
View
Most Expensive
C
NZ Jewellers
f681003a-2f6a-4e28-bfee-41408dd3dba0 · Nov 5
$8,781 NZD
$4,868 USD
View
18 more retailers have this diamond
Prices start from $2,700 NZDSave up to $6,081 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
$2,700 NZD