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Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1498706583

Certificate GIA 1498706583

Diamond specifications and retailer prices

From $2,435 USD
As of November 6, 2026
Save $2,955 USD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,390 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1498706583. Listed at 21 retailers as of November 5, 2026, with prices from $2,435 to $5,390, a $2,955 spread on the same certified stone. NZ Jewellers lists it at $5,390. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1498706583
Dimensions6.74 × 6.78 × 4.22 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Girdle conditionFaceted
Culet sizeNone
Top View
6.74 mm6.78 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1498706583
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,181 USD|Low: $2,231 USD|High: $5,236 USD|Avg: $3,299 USD|+1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2$2,435 USD
Retailer 8$2,587 USD
Retailer 7$2,633 USD
Retailer 10$2,911 USD
Retailer 1$3,181 USD
Retailer 3$3,203 USD
Retailer 9$3,305 USD
Retailer 5$3,377 USD
Retailer 4$3,776 USD
Retailer 6$5,160 USD

43 data points across 10 retailers

21 retailers$2,435 USD to $5,390 USD

B+
Cheapest Retailer
-
$2,435 USD
B+
Retailer 2
-
$2,438 USD
View
B+
Retailer 3
-
$2,510 USD
View
B+
Retailer 4
-
$2,587 USD
View
Final sale: no returns
Retailer 5
-
$2,633 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$2,750 USD
View
Retailer 7
-
$2,803 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$2,803 USD
View
B
Retailer 9
-
$2,835 USD
View
B
Retailer 10
-
$2,911 USD
View
B
Retailer 11
-
$3,150 USD
View
B
Retailer 12
-
$3,150 USD
View
B+
Retailer 13
-
$3,181 USD
View
B
Retailer 14
-
$3,203 USD
View
B
Retailer 15
-
$3,232 USD
View
B
Retailer 16
-
$3,250 USD
View
Retailer 17
-
$3,305 USD
View
Price last confirmed 30 days ago
B
Retailer 18
-
$3,377 USD
View
B
Retailer 19
-
$3,776 USD
View
B
Retailer 20
-
$5,160 USD
View
Most Expensive
B
NZ Jewellers
39fc103d-9290-4738-bcea-93388e39eadb · Nov 5
$5,390 USD
View
20 more retailers have this diamond
Prices start from $2,435 USDSave up to $2,955 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.

B+
1.20ct Round
$2,435 USD