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Radiant|Natural|GIA

1.20ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 2566030662

Certificate GIA 2566030662

Diamond specifications and retailer prices

From $2,358 AUD
SGD 2,238 SGD
As of October 24, 2026
10 retailers carry this diamond
Most expensive: $4,322 AUD at Helzberg Diamonds · As of October 25, 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 I 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 2566030662. Listed at 10 retailers as of October 24, 2026. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2566030662
Dimensions7.24 × 5.34 × 3.62 mm
L/W Ratio1.36
Culet sizeNone
Top View
7.24 mm5.34 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2566030662
Side View
Table 66.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.7%

Caratlytics Score

No score right now
No retailer has confirmed this stone recently, so we are not scoring it. Prices below are as of the date shown.

Price History

Last verified: Oct 24
Current: $4,322 AUD|Low: $2,358 AUD|High: $4,728 AUD|Avg: $3,218 AUD|-8.6%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 26, 2026
Retailer 9$2,358 AUD
Retailer 10$2,410 AUD
Retailer 7$2,410 AUD
Retailer 8$2,439 AUD
Retailer 2$2,573 AUD
Retailer 4$2,623 AUD
Retailer 13$2,748 AUD
Retailer 11$2,891 AUD
Retailer 3$3,154 AUD
Retailer 6$3,386 AUD
Retailer 5$3,673 AUD
Retailer 12$4,018 AUD
Helzberg Diamonds$4,322 AUD

32 data points across 13 retailers

10 retailers$2,358 AUD to $4,322 AUD

Retailer 1
-
$2,358 AUD
SGD 2,238 SGD
Price last confirmed 9 days ago
Retailer 2
-
$2,410 AUD
$1,693 USD
View
Price last confirmed 9 days ago
Retailer 3
-
$2,410 AUD
$1,693 USD
View
Price last confirmed 8 days ago
Retailer 4
-
$2,573 AUD
£1,423 GBP
View
Price last confirmed 7 days ago
Retailer 5
-
$2,623 AUD
SGD 2,490 SGD
View
Price last confirmed 8 days ago
Retailer 6
-
$2,748 AUD
$1,930 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$2,891 AUD
$2,031 USD
View
Price last confirmed 9 days ago
Retailer 8
-
$3,386 AUD
€2,265 EUR
View
Price last confirmed 8 days ago
Retailer 9
-
$4,018 AUD
$2,822 USD
View
Price last confirmed 9 days ago
Most Expensive
Helzberg Diamonds
XZRILMMGJGMMI · Oct 25
$4,322 AUD
$3,036 USD
View
Price last confirmed 8 days ago
9 more retailers have this diamond

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.

1.20ct Radiant
$2,358 AUD