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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 $1,497 USD
As of November 6, 2026
Save $3,371 USD (69%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $4,868 USD 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 $1,497 to $4,868, a $3,371 spread on the same certified stone. NZ Jewellers lists it at $4,868. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,868 USD|Low: $1,484 USD|High: $4,868 USD|Avg: $2,273 USD
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$1,497 USD
Retailer 2$1,510 USD
Retailer 15$1,755 USD
Retailer 7$1,803 USD
Retailer 10$1,895 USD
Retailer 11$1,909 USD
Retailer 8$1,983 USD
Retailer 6$1,996 USD
Retailer 17$1,996 USD
Retailer 18$2,088 USD
Retailer 9$2,090 USD
Retailer 5$2,133 USD
Retailer 12$2,155 USD
Retailer 4$2,303 USD
Retailer 13$2,564 USD
Retailer 3$2,906 USD
Retailer 14$3,487 USD
NZ Jewellers$4,868 USD

23 data points across 18 retailers

19 retailers$1,497 USD to $4,868 USD

A
Cheapest Retailer
-
$1,497 USD
A
Retailer 2
-
$1,510 USD
View
A
Retailer 3
-
$1,755 USD
View
A
Retailer 4
-
$1,803 USD
View
Retailer 5
-
$1,810 USD
View
Price last confirmed 109 days ago
Retailer 6
-
$1,895 USD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$1,909 USD
View
A
Retailer 8
-
$1,983 USD
View
B+
Retailer 9
-
$1,996 USD
View
Retailer 10
-
$1,996 USD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$2,088 USD
View
Retailer 12
-
$2,090 USD
View
Price last confirmed 10 days ago
B+
Retailer 13
-
$2,133 USD
View
B+
Retailer 14
-
$2,155 USD
View
B+
Retailer 15
-
$2,303 USD
View
B+
Retailer 16
-
$2,564 USD
View
B
Retailer 17
-
$2,906 USD
View
B
Retailer 18
-
$3,487 USD
View
Most Expensive
C
NZ Jewellers
f681003a-2f6a-4e28-bfee-41408dd3dba0 · Nov 5
$4,868 USD
View
18 more retailers have this diamond
Prices start from $1,497 USDSave up to $3,371 USD

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
$1,497 USD