Radiant|Natural|GIA

1.20ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 2556145465

Certificate GIA 2556145465

Diamond specifications and retailer prices

From $4,062 AUD
$2,847 USD
As of November 1, 2026
Save $249 AUD (6%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,318 AUD at Queensmith · As of October 9, 2026
View at Queensmith

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556145465. Listed at 14 retailers as of November 1, 2026, with a relatively tight 6% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2556145465
Dimensions6.77 × 5.31 × 3.79 mm
L/W Ratio1.27
Top View
6.77 mm5.31 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556145465
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $8,318 AUD|Low: $3,339 AUD|High: $8,318 AUD|Avg: $4,779 AUD|+0.8%
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
Retailer 15
Retailer 16
October 10, 2026
Retailer 4$3,339 AUD
Retailer 11$3,659 AUD
Retailer 16$3,947 AUD
Retailer 8$3,996 AUD
Retailer 3$4,062 AUD
Retailer 9$4,067 AUD
Retailer 6$4,138 AUD
Retailer 5$4,311 AUD
Retailer 10$4,501 AUD
Retailer 12$4,525 AUD
Retailer 13$4,672 AUD
Retailer 7$5,057 AUD
Retailer 2$5,082 AUD
Retailer 14$5,254 AUD
Retailer 15$7,376 AUD
Queensmith$8,318 AUD

20 data points across 16 retailers

14 retailers$4,062 AUD to $4,311 AUD

Retailer 1
-
$3,947 AUD
$2,766 USD
Price last confirmed 33 days ago
Retailer 2
-
$3,996 AUD
$2,800 USD
View
Price last confirmed 27 days ago
A
Retailer 3
-
$4,062 AUD
$2,847 USD
View
Retailer 4
-
$4,099 AUD
$2,873 USD
View
Price last confirmed 33 days ago
Retailer 5
-
$4,138 AUD
$2,900 USD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
$4,311 AUD
View
Retailer 7
-
$4,525 AUD
$3,171 USD
View
Price last confirmed 26 days ago
Retailer 8
-
$4,555 AUD
$3,192 USD
View
Price last confirmed 35 days ago
Retailer 9
-
$4,672 AUD
View
Price last confirmed 30 days ago
Retailer 10
-
$5,057 AUD
$3,544 USD
View
Price last confirmed 27 days ago
Retailer 11
-
$5,254 AUD
ZAR 59,483 ZAR
View
Price last confirmed 34 days ago
Retailer 12
-
$7,376 AUD
£4,070 GBP
View
Price last confirmed 29 days ago
Retailer 13
-
$7,591 AUD
$5,320 USD
View
Price last confirmed 34 days ago
Most Expensive
Queensmith
2556145465 · Oct 9
$8,318 AUD
£4,590 GBP
View
Price last confirmed 24 days ago
13 more retailers have this diamond
Prices start from $4,062 AUDSave up to $249 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
$4,062 AUD