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Radiant|Natural|GIA

1.20ct E SI1 Radiant Natural Diamond

VG • E/SI1 • GIA 5563777556

Certificate GIA 5563777556

Diamond specifications and retailer prices

From $4,478 AUD
As of November 4, 2026
Save $4,040 AUD (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,518 AUD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

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 5563777556. Listed at 11 retailers as of November 4, 2026, with prices from $4,478 to $8,518, a $4,040 spread on the same certified stone. Helzberg Diamonds lists it at $8,518. 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
OriginNatural
Grading LabGIA
CertificateGIA 5563777556
Dimensions7.04 × 5.40 × 3.72 mm
L/W Ratio1.30
Culet sizeNone
Top View
7.04 mm5.40 mm1.20 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5563777556
Side View
Table 68.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 68.8%

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 4
Current: $8,518 AUD|Low: $4,478 AUD|High: $8,518 AUD|Avg: $6,124 AUD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 10$4,478 AUD
Retailer 4$4,828 AUD
Retailer 7$4,836 AUD
Retailer 2$5,225 AUD
Retailer 3$5,397 AUD
Retailer 11$5,822 AUD
Retailer 6$5,970 AUD
Retailer 5$6,213 AUD
Retailer 8$7,554 AUD
Retailer 9$8,095 AUD
Helzberg Diamonds$8,518 AUD

4 data points across 11 retailers

11 retailers$4,478 AUD to $8,518 AUD

A
Cheapest Retailer
-
$4,478 AUD
B+
Retailer 2
-
$4,828 AUD
View
B+
Retailer 3
-
$4,836 AUD
View
B+
Retailer 4
-
$5,225 AUD
View
B+
Retailer 5
-
$5,397 AUD
View
B
Retailer 6
-
$5,822 AUD
View
B
Retailer 7
-
$5,970 AUD
View
B
Retailer 8
-
$6,213 AUD
View
B
Retailer 9
-
$7,554 AUD
View
B
Retailer 10
-
$8,095 AUD
View
Most Expensive
B
Helzberg Diamonds
XZRLLMJNNNLLM · Nov 6
$8,518 AUD
$5,853 USD
View
10 more retailers have this diamond
Prices start from $4,478 AUDSave up to $4,040 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
$4,478 AUD