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Round|Natural|GIA

1.20ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2554750922

Certificate GIA 2554750922

Diamond specifications and retailer prices

From $1,635 USD
As of November 4, 2026
Save $2,279 USD (58%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $4,726 USD at NZ Jewellers · As of October 3, 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 2554750922. Listed at 21 retailers as of November 4, 2026, with a 139% 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
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2554750922
Dimensions6.69 × 6.73 × 4.27 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.69 mm6.73 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2554750922
Side View
Table 56.0%Crown 36°Girdle: THN-STKPavilion 41.2°Culet: NoneDepth 63.7%

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 4
Current: $2,123 USD|Low: $1,625 USD|High: $4,008 USD|Avg: $2,306 USD|-4.6%
Retailer 1
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
November 6, 2026
Retailer 6$1,635 USD
Retailer 7$1,701 USD
Retailer 3$1,702 USD
Retailer 5$1,833 USD
Retailer 12$1,856 USD
Retailer 2$1,868 USD
Retailer 4$1,899 USD
Retailer 1$2,123 USD
Retailer 8$2,313 USD
Retailer 14$2,340 USD
Retailer 16$2,340 USD
Retailer 10$2,397 USD
Retailer 9$2,410 USD
Retailer 13$2,708 USD
Retailer 11$2,825 USD
Retailer 15$3,914 USD

27 data points across 16 retailers

21 retailers$1,635 USD to $3,914 USD

A
Cheapest Retailer
-
$1,635 USD
Retailer 2
-
$1,701 USD
View
Price last confirmed 22 days ago
A
Retailer 3
-
$1,702 USD
View
A
Retailer 4
-
$1,833 USD
View
A
Retailer 5
-
$1,856 USD
View
Final sale: no returns
A
Retailer 6
-
$1,868 USD
View
A
Retailer 7
-
$1,899 USD
View
A
Retailer 8
-
$2,123 USD
View
Retailer 9
-
$2,240 USD
View
Price last confirmed 21 days ago
Retailer 10
-
$2,261 USD
View
Price last confirmed 29 days ago
Retailer 11
-
$2,313 USD
View
Price last confirmed 21 days ago
B+
Retailer 12
-
$2,340 USD
View
B+
Retailer 13
-
$2,340 USD
View
Retailer 14
-
$2,343 USD
View
Price last confirmed 22 days ago
B+
Retailer 15
-
$2,397 USD
View
B+
Retailer 16
-
$2,410 USD
View
Retailer 17
-
$2,584 USD
View
Price last confirmed 21 days ago
B+
Retailer 18
-
$2,708 USD
View
B+
Retailer 19
-
$2,825 USD
View
B
Retailer 20
-
$3,914 USD
View
Most Expensive
NZ Jewellers
e55c1379-2256-414d-a26b-5ea956badb91 · Oct 3
$4,726 USD
View
Price last confirmed 34 days ago
20 more retailers have this diamond
Prices start from $1,635 USDSave up to $2,279 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
$1,635 USD