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Round|Natural|GIA

1.20ct J I1 Round Natural Diamond

EX • J/I1 • GIA 1509651486

Certificate GIA 1509651486

Diamond specifications and retailer prices

From €1,203 EUR
HK$10,500 HKD
As of October 31, 2026
Save €2,740 EUR (69%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €3,943 EUR 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 €1,203 to €3,943, a €2,740 spread on the same certified stone. NZ Jewellers lists it at €3,943. 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: €3,943 EUR|Low: €1,192 EUR|High: €3,943 EUR|Avg: €1,839 EUR
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€1,203 EUR
Retailer 2€1,215 EUR
Retailer 10€1,472 EUR
Retailer 6€1,557 EUR
Retailer 7€1,617 EUR
Retailer 8€1,617 EUR
Retailer 5€1,691 EUR
Retailer 9€1,865 EUR
Retailer 4€2,208 EUR
NZ Jewellers€3,943 EUR

43 data points across 10 retailers

10 retailers€1,203 EUR to €3,943 EUR

A
Cheapest Retailer
-
€1,203 EUR
HK$10,500 HKD
A
Retailer 2
-
€1,215 EUR
₹129,271 INR
View
B+
Retailer 3
-
€1,472 EUR
$1,645 USD
View
B+
Retailer 4
-
€1,557 EUR
$1,739 USD
View
B+
Retailer 5
-
€1,617 EUR
$1,806 USD
View
B+
Retailer 6
-
€1,617 EUR
$1,806 USD
View
B+
Retailer 7
-
€1,691 EUR
$1,889 USD
View
B
Retailer 8
-
€1,865 EUR
$2,084 USD
View
B
Retailer 9
-
€2,208 EUR
View
Most Expensive
C
NZ Jewellers
c400af1e-6f4c-4586-8efa-1b1704fafc63 · Oct 27
€3,943 EUR
$4,405 USD
View
9 more retailers have this diamond
Prices start from €1,203 EURSave up to €2,740 EUR

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
€1,203 EUR