CaratHunter
Plans
Radiant|Natural|GIA

1.20ct I SI2 Radiant Natural Diamond

EX • I/SI2 • GIA 1565079351

Certificate GIA 1565079351

Diamond specifications and retailer prices

From $3,419 AUD
As of November 5, 2026
Save $2,928 AUD (46%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,347 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1565079351. Listed at 12 retailers as of November 5, 2026, with prices from $3,419 to $6,347, a $2,928 spread on the same certified stone. Helzberg Diamonds lists it at $6,347. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1565079351
Dimensions7.34 × 5.42 × 3.66 mm
L/W Ratio1.35
Culet sizeNone
Top View
7.34 mm5.42 mm1.20 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1565079351
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.5%

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 5
Current: $6,347 AUD|Low: $3,400 AUD|High: $6,478 AUD|Avg: $4,514 AUD|-2.0%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 7$3,419 AUD
Retailer 8$3,630 AUD
Retailer 9$3,692 AUD
Retailer 2$3,949 AUD
Retailer 4$4,020 AUD
Retailer 10$4,334 AUD
Retailer 12$4,366 AUD
Retailer 3$4,506 AUD
Retailer 5$4,633 AUD
Retailer 6$4,745 AUD
Retailer 11$6,005 AUD
Helzberg Diamonds$6,347 AUD

40 data points across 12 retailers

12 retailers$3,419 AUD to $6,347 AUD

A
Cheapest Retailer
-
$3,419 AUD
B+
Retailer 2
-
$3,630 AUD
View
B+
Retailer 3
-
$3,692 AUD
View
B+
Retailer 4
-
$3,949 AUD
View
B+
Retailer 5
-
$4,020 AUD
View
B+
Retailer 6
-
$4,334 AUD
View
B+
Retailer 7
-
$4,366 AUD
View
B
Retailer 8
-
$4,506 AUD
View
B+
Retailer 9
-
$4,633 AUD
View
B
Retailer 10
-
$4,745 AUD
View
B
Retailer 11
-
$6,005 AUD
View
Most Expensive
B
Helzberg Diamonds
XZRHLMLGNPJLH · Nov 6
$6,347 AUD
$4,361 USD
View
11 more retailers have this diamond
Prices start from $3,419 AUDSave up to $2,928 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
$3,419 AUD