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Radiant|Natural|GIA

1.20ct E SI1 Radiant Natural Diamond

VG • E/SI1 • GIA 5456634140

Certificate GIA 5456634140

Diamond specifications and retailer prices

From $6,606 AUD
As of November 6, 2026
Save $6,118 AUD (48%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $12,724 AUD at MOH London · As of November 4, 2026
View at MOH London

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 5456634140. Listed at 10 retailers as of November 4, 2026, with prices from $6,606 to $12,724, a $6,118 spread on the same certified stone. MOH London lists it at $12,724. 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
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle51.19°
Pavilion angle31.73°
OriginNatural
Grading LabGIA
CertificateGIA 5456634140
Dimensions6.39 × 5.20 × 3.73 mm
L/W Ratio1.23
Top View
6.39 mm5.20 mm1.20 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5456634140
Side View
Table 68.0%Crown 51.19°Girdle: Very ThickPavilion 31.73°Culet: NoneDepth 71.8%

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 6
Current: $12,724 AUD|Low: $6,606 AUD|High: $12,913 AUD|Avg: $8,673 AUD|+2.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 3$6,606 AUD
Retailer 10$6,986 AUD
Retailer 6$7,008 AUD
Retailer 8$7,190 AUD
Retailer 9$8,011 AUD
Retailer 7$8,022 AUD
Retailer 2$8,523 AUD
Retailer 4$9,013 AUD
Retailer 5$9,773 AUD
MOH London$12,724 AUD

45 data points across 10 retailers

10 retailers$6,606 AUD to $12,724 AUD

B+
Cheapest Retailer
-
$6,606 AUD
B
Retailer 2
-
$6,986 AUD
View
B
Retailer 3
-
$7,008 AUD
View
B
Retailer 4
-
$7,190 AUD
View
Retailer 5
-
$8,011 AUD
View
Price last confirmed 9 days ago
Retailer 6
-
$8,022 AUD
View
Price last confirmed 29 days ago
B
Retailer 7
-
$8,523 AUD
View
B
Retailer 8
-
$9,013 AUD
View
B
Retailer 9
-
$9,773 AUD
View
Most Expensive
B
MOH London
E1279AAA1 · Nov 4
$12,724 AUD
£6,884 GBP
View
9 more retailers have this diamond
Prices start from $6,606 AUDSave up to $6,118 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.

B+
1.20ct Radiant
$6,606 AUD