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Radiant|Natural|GIA

1.20ct F SI1 Radiant Natural Diamond

GD • F/SI1 • GIA 6552511433

Certificate GIA 6552511433

Diamond specifications and retailer prices

From $3,855 AUD
As of November 6, 2026
Save $4,669 AUD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $9,242 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6552511433. Listed at 21 retailers as of November 4, 2026, with a 121% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552511433
Dimensions7.14 × 5.45 × 3.75 mm
L/W Ratio1.31
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
7.14 mm5.45 mm1.20 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552511433
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: 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 6
Current: $9,242 AUD|Low: $3,819 AUD|High: $9,417 AUD|Avg: $5,757 AUD|+1.0%
Queensmith
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 13$3,855 AUD
Retailer 7$4,005 AUD
Retailer 5$4,587 AUD
Retailer 11$4,676 AUD
Retailer 4$4,717 AUD
Retailer 14$4,919 AUD
Retailer 2$5,289 AUD
Retailer 3$5,321 AUD
Retailer 8$5,360 AUD
Retailer 6$5,891 AUD
Retailer 9$5,950 AUD
Retailer 10$6,238 AUD
Retailer 12$8,524 AUD
Queensmith$9,242 AUD

27 data points across 14 retailers

21 retailers$3,855 AUD to $8,524 AUD

A
Cheapest Retailer
-
$3,855 AUD
A
Retailer 2
-
$4,005 AUD
View
B+
Retailer 3
-
$4,587 AUD
View
B+
Retailer 4
-
$4,676 AUD
View
B+
Retailer 5
-
$4,717 AUD
View
Final sale: no returns
B
Retailer 6
-
$4,919 AUD
View
B
Retailer 7
-
$4,921 AUD
View
B
Retailer 8
-
$5,191 AUD
View
B
Retailer 9
-
$5,289 AUD
View
Retailer 10
-
$5,290 AUD
View
Price last confirmed 20 days ago
Retailer 11
-
$5,290 AUD
View
Price last confirmed 22 days ago
B
Retailer 12
-
$5,321 AUD
View
B
Retailer 13
-
$5,360 AUD
View
Retailer 14
-
$5,494 AUD
View
Price last confirmed 22 days ago
Retailer 15
-
$5,694 AUD
View
Price last confirmed 30 days ago
B
Retailer 16
-
$5,950 AUD
View
Retailer 17
-
$6,104 AUD
View
Price last confirmed 19 days ago
B
Retailer 18
-
$6,238 AUD
View
B
Retailer 19
-
$8,524 AUD
View
Retailer 20
-
$9,217 AUD
View
Price last confirmed 21 days ago
Most Expensive
Queensmith
6552511433 · Oct 28
$9,242 AUD
£5,000 GBP
View
Price last confirmed 9 days ago
20 more retailers have this diamond
Prices start from $3,855 AUDSave up to $4,669 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
$3,855 AUD