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Radiant|Natural|GIA

1.20ct F SI1 Radiant Natural Diamond

EX • F/SI1 • GIA 5556393129

Certificate GIA 5556393129

Diamond specifications and retailer prices

From $4,724 AUD
As of November 4, 2026
Save $4,547 AUD (49%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,271 AUD at NZ Jewellers · As of November 5, 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 F 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 5556393129. Listed at 19 retailers as of November 4, 2026, with prices from $4,724 to $9,271, a $4,547 spread on the same certified stone. NZ Jewellers lists it at $9,271. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.2°
OriginNatural
Grading LabGIA
CertificateGIA 5556393129
Dimensions7.49 × 5.26 × 3.65 mm
L/W Ratio1.42
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud
Top View
7.49 mm5.26 mm1.20 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556393129
Side View
Table 70.0%Crown 42.2°Girdle: ThickPavilionCulet: NoneDepth 69.4%

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 4
Current: $9,271 AUD|Low: $4,602 AUD|High: $9,822 AUD|Avg: $6,028 AUD|-5.6%
NZ Jewellers
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 5$4,724 AUD
Retailer 14$4,861 AUD
Retailer 7$4,911 AUD
Retailer 9$5,108 AUD
Retailer 11$5,196 AUD
Retailer 3$5,321 AUD
Retailer 10$5,321 AUD
Retailer 13$5,506 AUD
Retailer 8$5,526 AUD
Retailer 4$5,532 AUD
Retailer 18$5,669 AUD
Retailer 6$5,781 AUD
Retailer 17$6,139 AUD
Retailer 15$6,194 AUD
Retailer 16$6,494 AUD
Retailer 2$6,795 AUD
Retailer 12$8,852 AUD
NZ Jewellers$9,271 AUD

24 data points across 18 retailers

19 retailers$4,724 AUD to $9,271 AUD

B+
Cheapest Retailer
-
$4,724 AUD
B+
Retailer 2
-
$4,861 AUD
View
B+
Retailer 3
-
$4,911 AUD
View
Final sale: no returns
B+
Retailer 4
-
$5,108 AUD
View
B+
Retailer 5
-
$5,196 AUD
View
B+
Retailer 6
-
$5,321 AUD
View
Retailer 7
-
$5,321 AUD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$5,506 AUD
View
B+
Retailer 9
-
$5,526 AUD
View
B+
Retailer 10
-
$5,532 AUD
View
B+
Retailer 11
-
$5,669 AUD
View
B+
Retailer 12
-
$5,781 AUD
View
Retailer 13
-
$5,925 AUD
View
Price last confirmed 30 days ago
B+
Retailer 14
-
$6,139 AUD
View
B+
Retailer 15
-
$6,194 AUD
View
B+
Retailer 16
-
$6,494 AUD
View
Retailer 17
-
$6,795 AUD
View
B
Retailer 18
-
$8,852 AUD
View
Most Expensive
B
NZ Jewellers
92481498-3960-449d-88fe-049ad514a65a · Nov 5
$9,271 AUD
$6,370 USD
View
18 more retailers have this diamond
Prices start from $4,724 AUDSave up to $4,547 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
$4,724 AUD