Round|Natural|GIA

1.20ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6542820378

Certificate GIA 6542820378

Diamond specifications and retailer prices

From $2,153 USD
As of November 4, 2026
Save $3,837 USD (64%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $5,990 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 6542820378. Listed at 17 retailers as of November 4, 2026, with prices from $2,153 to $5,990, a $3,837 spread on the same certified stone. NZ Jewellers lists it at $5,990. 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 angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6542820378
Dimensions6.78 × 6.76 × 4.24 mm
L/W Ratio1.00
Top View
6.78 mm6.76 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542820378
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.7%

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: $5,990 USD|Low: $2,153 USD|High: $5,990 USD|Avg: $3,226 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
November 6, 2026
Retailer 9$2,153 USD
Retailer 3$2,250 USD
Retailer 13$2,395 USD
Retailer 4$2,596 USD
Retailer 6$2,596 USD
Retailer 15$2,716 USD
Retailer 14$2,815 USD
Retailer 5$2,995 USD
Retailer 2$3,015 USD
Retailer 12$3,349 USD
Retailer 8$3,371 USD
Retailer 7$3,409 USD
Retailer 11$4,128 USD
Retailer 10$4,791 USD
NZ Jewellers$5,990 USD

39 data points across 15 retailers

17 retailers$2,153 USD to $5,990 USD

A
Cheapest Retailer
-
$2,153 USD
B+
Retailer 2
-
$2,250 USD
View
B+
Retailer 3
-
$2,324 USD
View
B+
Retailer 4
-
$2,395 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,596 USD
View
Retailer 6
-
$2,596 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$2,716 USD
View
B
Retailer 8
-
$2,815 USD
View
B+
Retailer 9
-
$2,970 USD
View
B+
Retailer 10
-
$2,970 USD
View
B+
Retailer 11
-
$2,995 USD
View
B+
Retailer 12
-
$3,015 USD
View
B
Retailer 13
-
$3,070 USD
View
B
Retailer 14
-
$3,371 USD
View
B
Retailer 15
-
$4,128 USD
View
B
Retailer 16
-
$4,791 USD
View
Most Expensive
B
NZ Jewellers
3e49ae64-05b7-42ad-913f-fde23ded4821 · Nov 5
$5,990 USD
View
16 more retailers have this diamond
Prices start from $2,153 USDSave up to $3,837 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
$2,153 USD