Round|Natural|GIA

1.20ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2537779753

Certificate GIA 2537779753

Diamond specifications and retailer prices

From $1,843 USD
As of November 6, 2026
Save $2,361 USD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $5,084 USD 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,917 USD|Low: $1,830 USD|High: $4,311 USD|Avg: $2,560 USD|-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$1,843 USD
Retailer 1$1,917 USD
Retailer 7$2,152 USD
Retailer 10$2,221 USD
Retailer 3$2,290 USD
Retailer 4$2,432 USD
Retailer 12$2,480 USD
Retailer 9$2,531 USD
Retailer 5$2,546 USD
Retailer 6$2,566 USD
Retailer 8$2,985 USD
Retailer 11$4,204 USD

38 data points across 12 retailers

18 retailers$1,843 USD to $4,204 USD

A
Cheapest Retailer
-
$1,843 USD
A
Retailer 2
-
$1,917 USD
View
A
Retailer 3
-
$2,152 USD
View
B+
Retailer 4
-
$2,221 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,290 USD
View
B+
Retailer 6
-
$2,305 USD
View
Retailer 7
-
$2,432 USD
View
Price last confirmed 39 days ago
Retailer 8
-
$2,432 USD
View
Price last confirmed 36 days ago
B+
Retailer 9
-
$2,480 USD
View
B+
Retailer 10
-
$2,531 USD
View
Retailer 11
-
$2,544 USD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$2,546 USD
View
B+
Retailer 13
-
$2,566 USD
View
Retailer 14
-
$2,806 USD
View
Price last confirmed 38 days ago
B+
Retailer 15
-
$2,985 USD
View
B
Retailer 16
-
$4,204 USD
View
Retailer 17
-
$5,084 USD
View
Price last confirmed 34 days ago
Most Expensive
NZ Jewellers
1419a2b3-5131-4a5f-b6a5-38c01a255356 · Sep 28
$5,084 USD
View
Price last confirmed 39 days ago
17 more retailers have this diamond
Prices start from $1,843 USDSave up to $2,361 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
$1,843 USD