Round|Natural|GIA

1.20ct J I1 Round Natural Diamond

VG • J/I1 • GIA 6392373870

Certificate GIA 6392373870

Diamond specifications and retailer prices

From $1,728 USD
HK$13,500 HKD
As of November 1, 2026
Save $3,129 USD (64%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $4,857 USD at NZ Jewellers · As of October 30, 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 very-good cut grade and certified by GIA 6392373870. Listed at 9 retailers as of October 30, 2026, with prices from $1,728 to $4,857, a $3,129 spread on the same certified stone. NZ Jewellers lists it at $4,857. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
J
Color
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6392373870
Dimensions6.64 × 6.59 × 4.24 mm
L/W Ratio1.01
Top View
6.64 mm6.59 mm1.20 ctJ / I1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6392373870
Side View
Table 57.0%CrownGirdlePavilionCulet: NoneDepth 64.1%

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 1
Current: $4,857 USD|Low: $1,715 USD|High: $4,914 USD|Avg: $2,763 USD|-1.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 4$1,728 USD
Retailer 10$2,098 USD
Retailer 7$2,199 USD
Retailer 5$2,323 USD
Retailer 8$2,323 USD
Retailer 6$2,430 USD
Retailer 9$2,681 USD
Retailer 11$2,833 USD
Retailer 2$2,888 USD
Retailer 3$3,797 USD
NZ Jewellers$4,857 USD

17 data points across 11 retailers

9 retailers$1,728 USD to $4,857 USD

B+
Cheapest Retailer
-
$1,728 USD
HK$13,500 HKD
B
Retailer 2
-
$2,098 USD
View
B
Retailer 3
-
$2,199 USD
View
B
Retailer 4
-
$2,323 USD
View
B
Retailer 5
-
$2,323 USD
View
B
Retailer 6
-
$2,430 USD
View
B
Retailer 7
-
$2,681 USD
View
B
Retailer 8
-
$2,888 USD
€2,750 EUR
View
Most Expensive
C
NZ Jewellers
96b2ebfd-4f71-4cd1-bd25-6c4ecfc39f3e · Oct 30
$4,857 USD
View
8 more retailers have this diamond
Prices start from $1,728 USDSave up to $3,129 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
$1,728 USD