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Radiant|Natural|GIA

1.20ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 6551596013

Certificate GIA 6551596013

Diamond specifications and retailer prices

From $4,768 AUD
As of November 6, 2026
Save $5,266 AUD (52%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $11,342 AUD at NZ Jewellers · As of October 17, 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 6551596013. Listed at 22 retailers as of November 4, 2026, with a 110% 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551596013
Dimensions7.69 × 5.30 × 3.60 mm
L/W Ratio1.45
Girdle conditionPolished
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
7.69 mm5.30 mm1.20 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551596013
Side View
Table 68.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 67.9%

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: $6,398 AUD|Low: $4,732 AUD|High: $10,434 AUD|Avg: $6,860 AUD|-3.2%
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
November 7, 2026
Retailer 14$4,768 AUD
Retailer 7$4,938 AUD
Retailer 5$5,663 AUD
Retailer 12$5,759 AUD
Retailer 4$5,830 AUD
Retailer 9$6,014 AUD
Retailer 8$6,129 AUD
Retailer 1$6,398 AUD
Retailer 6$6,510 AUD
Retailer 3$6,533 AUD
Retailer 10$7,108 AUD
Retailer 11$7,708 AUD
Retailer 13$10,034 AUD
Retailer 2$10,230 AUD

24 data points across 14 retailers

22 retailers$4,768 AUD to $10,034 AUD

A
Cheapest Retailer
-
$4,768 AUD
A
Retailer 2
-
$4,938 AUD
View
B+
Retailer 3
-
$5,663 AUD
View
B+
Retailer 4
-
$5,759 AUD
View
B+
Retailer 5
-
$5,830 AUD
View
Final sale: no returns
B+
Retailer 6
-
$5,954 AUD
View
B+
Retailer 7
-
$5,960 AUD
View
B+
Retailer 8
-
$6,014 AUD
View
B+
Retailer 9
-
$6,129 AUD
View
B+
Retailer 10
-
$6,316 AUD
View
B+
Retailer 11
-
$6,398 AUD
View
Retailer 12
-
$6,510 AUD
View
Price last confirmed 20 days ago
Retailer 13
-
$6,510 AUD
View
Price last confirmed 22 days ago
Retailer 14
-
$6,510 AUD
View
Price last confirmed 22 days ago
B+
Retailer 15
-
$6,533 AUD
View
Retailer 16
-
$6,973 AUD
View
Price last confirmed 29 days ago
B+
Retailer 17
-
$7,108 AUD
View
Retailer 18
-
$7,511 AUD
View
Price last confirmed 19 days ago
B
Retailer 19
-
$7,708 AUD
View
B
Retailer 20
-
$10,034 AUD
View
Retailer 21
-
$10,230 AUD
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
25c61bb8-2ffe-42e2-83bd-8333ee437c0f · Oct 17
$11,342 AUD
$7,793 USD
View
Price last confirmed 20 days ago
21 more retailers have this diamond
Prices start from $4,768 AUDSave up to $5,266 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
$4,768 AUD