Radiant|Natural|GIA

1.20ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 1242026926

Certificate GIA 1242026926

Diamond specifications and retailer prices

From €1,627 EUR
HK$14,200 HKD
As of November 1, 2026
Save €2,251 EUR (58%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €4,627 EUR at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1242026926. Listed at 19 retailers as of October 29, 2026, with a 138% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1242026926
Dimensions7.08 × 5.23 × 3.53 mm
L/W Ratio1.35
Girdle conditionPolished
Top View
7.08 mm5.23 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1242026926
Side View
Table 68.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.5%

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: Nov 1
Current: €2,100 EUR|Low: €1,581 EUR|High: €3,956 EUR|Avg: €2,365 EUR|+1.7%
Retailer 1
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
Retailer 16
November 1, 2026
Retailer 9€1,627 EUR
Retailer 14€1,668 EUR
Retailer 15€1,775 EUR
Retailer 2€1,840 EUR
Retailer 16€1,900 EUR
Retailer 4€2,005 EUR
Retailer 5€2,014 EUR
Retailer 7€2,046 EUR
Retailer 1€2,100 EUR
Retailer 3€2,262 EUR
Retailer 10€2,706 EUR
Retailer 8€2,732 EUR
Retailer 11€2,749 EUR
Retailer 6€3,070 EUR
Retailer 13€3,272 EUR
Retailer 12€3,878 EUR

31 data points across 16 retailers

19 retailers€1,627 EUR to €3,878 EUR

A
Cheapest Retailer
-
€1,627 EUR
HK$14,200 HKD
A
Retailer 2
-
€1,668 EUR
$1,864 USD
View
A
Retailer 3
-
€1,775 EUR
$1,983 USD
View
B+
Retailer 4
-
€1,840 EUR
$2,056 USD
View
Final sale: no returns
B+
Retailer 5
-
€1,900 EUR
$2,123 USD
View
B+
Retailer 6
-
€2,005 EUR
$2,240 USD
View
B+
Retailer 7
-
€2,014 EUR
$2,250 USD
View
B+
Retailer 8
-
€2,046 EUR
$2,286 USD
View
B+
Retailer 9
-
€2,100 EUR
£1,847 GBP
View
B+
Retailer 10
-
€2,210 EUR
A$3,798 AUD
View
Retailer 11
-
€2,223 EUR
SGD 3,356 SGD
View
Price last confirmed 31 days ago
B+
Retailer 12
-
€2,262 EUR
$2,527 USD
View
B
Retailer 13
-
€2,706 EUR
ZAR 48,836 ZAR
View
Retailer 14
-
€2,732 EUR
A$4,696 AUD
View
Price last confirmed 30 days ago
B
Retailer 15
-
€2,749 EUR
View
B
Retailer 16
-
€3,070 EUR
$3,430 USD
View
B
Retailer 17
-
€3,272 EUR
$3,656 USD
View
B
Retailer 18
-
€3,878 EUR
£3,411 GBP
View
Most Expensive
NZ Jewellers
62ffbbde-18a4-4360-8d7e-35c1b4843a32 · Sep 30
€4,627 EUR
$5,169 USD
View
Price last confirmed 32 days ago
18 more retailers have this diamond
Prices start from €1,627 EURSave up to €2,251 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 Radiant
€1,627 EUR