Round|Natural|GIA

1.20ct J I1 Round Natural Diamond

EX • J/I1 • GIA 1509651486

Certificate GIA 1509651486

Diamond specifications and retailer prices

From $1,344 USD
HK$10,500 HKD
As of October 31, 2026
Save $3,061 USD (69%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,405 USD at NZ Jewellers · As of October 27, 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 I1 clarity (included), with a top-tier cut grade and certified by GIA 1509651486. Listed at 10 retailers as of October 27, 2026, with prices from $1,344 to $4,405, a $3,061 spread on the same certified stone. NZ Jewellers lists it at $4,405. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
J
Color
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1509651486
Dimensions6.79 × 6.81 × 4.23 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Girdle conditionFaceted
Key to symbols
Crystal, Cavity, Natural
Top View
6.79 mm6.81 mm1.20 ctJ / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1509651486
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $4,405 USD|Low: $1,331 USD|High: $4,405 USD|Avg: $2,054 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 3$1,344 USD
Retailer 2$1,357 USD
Retailer 10$1,645 USD
Retailer 6$1,739 USD
Retailer 7$1,806 USD
Retailer 8$1,806 USD
Retailer 5$1,889 USD
Retailer 9$2,084 USD
Retailer 4$2,466 USD
NZ Jewellers$4,405 USD

43 data points across 10 retailers

10 retailers$1,344 USD to $4,405 USD

A
Cheapest Retailer
-
$1,344 USD
HK$10,500 HKD
A
Retailer 2
-
$1,357 USD
₹129,271 INR
View
B+
Retailer 3
-
$1,645 USD
View
B+
Retailer 4
-
$1,739 USD
View
B+
Retailer 5
-
$1,806 USD
View
B+
Retailer 6
-
$1,806 USD
View
B+
Retailer 7
-
$1,889 USD
View
B
Retailer 8
-
$2,084 USD
View
B
Retailer 9
-
$2,466 USD
€2,349 EUR
View
Most Expensive
C
NZ Jewellers
c400af1e-6f4c-4586-8efa-1b1704fafc63 · Oct 27
$4,405 USD
View
9 more retailers have this diamond
Prices start from $1,344 USDSave up to $3,061 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
$1,344 USD