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Radiant|Natural|GIA

1.20ct E SI1 Radiant Natural Diamond

ID • E/SI1 • GIA 2245018786

Certificate GIA 2245018786

Diamond specifications and retailer prices

From $4,042 AUD
As of November 6, 2026
Save $4,918 AUD (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $9,312 AUD at NZ Jewellers · As of October 11, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245018786. Listed at 22 retailers as of November 4, 2026, with a 122% 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
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2245018786
Dimensions6.88 × 5.27 × 3.67 mm
L/W Ratio1.31
Girdle conditionPolished
Top View
6.88 mm5.27 mm1.20 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245018786
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.7%

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 6
Current: $5,127 AUD|Low: $3,967 AUD|High: $9,178 AUD|Avg: $5,326 AUD|+0.7%
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
Retailer 17
Retailer 18
November 7, 2026
Retailer 8$4,042 AUD
Retailer 18$4,261 AUD
Retailer 2$4,353 AUD
Retailer 10$4,491 AUD
Retailer 12$4,576 AUD
Retailer 4$4,701 AUD
Retailer 5$4,710 AUD
Retailer 11$4,788 AUD
Retailer 16$4,835 AUD
Retailer 9$4,889 AUD
Retailer 6$4,977 AUD
Retailer 1$5,127 AUD
Retailer 13$5,212 AUD
Retailer 7$5,520 AUD
Retailer 14$6,255 AUD
Retailer 15$6,558 AUD
Retailer 3$8,178 AUD
Retailer 17$8,959 AUD

19 data points across 18 retailers

22 retailers$4,042 AUD to $8,959 AUD

A
Cheapest Retailer
-
$4,042 AUD
A
Retailer 2
-
$4,261 AUD
View
A
Retailer 3
-
$4,353 AUD
View
B+
Retailer 4
-
$4,491 AUD
View
Final sale: no returns
A
Retailer 5
-
$4,576 AUD
View
A
Retailer 6
-
$4,701 AUD
View
A
Retailer 7
-
$4,710 AUD
View
A
Retailer 8
-
$4,788 AUD
View
A
Retailer 9
-
$4,835 AUD
View
A
Retailer 10
-
$4,889 AUD
View
B+
Retailer 11
-
$4,977 AUD
View
B+
Retailer 12
-
$5,127 AUD
View
B+
Retailer 13
-
$5,212 AUD
View
B+
Retailer 14
-
$5,324 AUD
View
Retailer 15
-
$5,500 AUD
View
Price last confirmed 22 days ago
B+
Retailer 16
-
$5,520 AUD
View
Retailer 17
-
$5,755 AUD
View
Price last confirmed 30 days ago
B+
Retailer 18
-
$6,255 AUD
View
B+
Retailer 19
-
$6,558 AUD
View
B
Retailer 20
-
$8,178 AUD
View
B
Retailer 21
-
$8,959 AUD
View
Most Expensive
NZ Jewellers
1423e8c1-e719-4934-8b1e-4f5e77c950b6 · Oct 11
$9,312 AUD
$6,398 USD
View
Price last confirmed 26 days ago
21 more retailers have this diamond
Prices start from $4,042 AUDSave up to $4,918 AUD

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
$4,042 AUD