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Radiant|Natural|GIA

1.20ct D SI1 Radiant Natural Diamond

ID • D/SI1 • GIA 6565507550

Certificate GIA 6565507550

Diamond specifications and retailer prices

From $4,750 AUD
As of November 6, 2026
Save $6,379 AUD (57%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $11,129 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 D 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 6565507550. Listed at 22 retailers as of November 5, 2026, with prices from $4,750 to $11,129, a $6,379 spread on the same certified stone. NZ Jewellers lists it at $11,129. 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565507550
Dimensions7.57 × 5.24 × 3.48 mm
L/W Ratio1.44
Girdle conditionPolished
Top View
7.57 mm5.24 mm1.20 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565507550
Side View
Table 67.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 66.4%

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: $11,129 AUD|Low: $4,488 AUD|High: $11,129 AUD|Avg: $6,448 AUD|+2.5%
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
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 7, 2026
Retailer 8$4,750 AUD
Retailer 11$4,883 AUD
Retailer 22$5,005 AUD
Retailer 4$5,031 AUD
Retailer 13$5,084 AUD
Retailer 12$5,196 AUD
Retailer 16$5,330 AUD
Retailer 10$5,341 AUD
Retailer 6$5,491 AUD
Retailer 3$5,523 AUD
Retailer 20$5,667 AUD
Retailer 9$5,685 AUD
Retailer 14$5,715 AUD
Retailer 2$5,980 AUD
Retailer 7$6,126 AUD
Retailer 17$6,197 AUD
Retailer 15$6,535 AUD
Retailer 18$7,050 AUD
Retailer 19$7,794 AUD
Retailer 5$9,588 AUD
Retailer 21$10,147 AUD
NZ Jewellers$11,129 AUD

18 data points across 22 retailers

22 retailers$4,750 AUD to $11,129 AUD

A
Cheapest Retailer
-
$4,750 AUD
A
Retailer 2
-
$4,883 AUD
View
B+
Retailer 3
-
$5,005 AUD
View
A
Retailer 4
-
$5,031 AUD
View
A
Retailer 5
-
$5,084 AUD
View
A
Retailer 6
-
$5,196 AUD
View
B+
Retailer 7
-
$5,330 AUD
View
B+
Retailer 8
-
$5,341 AUD
View
Final sale: no returns
B+
Retailer 9
-
$5,491 AUD
View
B+
Retailer 10
-
$5,523 AUD
View
B+
Retailer 11
-
$5,667 AUD
View
B+
Retailer 12
-
$5,685 AUD
View
Retailer 13
-
$5,715 AUD
View
Price last confirmed 11 days ago
B+
Retailer 14
-
$5,980 AUD
View
B+
Retailer 15
-
$6,126 AUD
View
B+
Retailer 16
-
$6,197 AUD
View
Retailer 17
-
$6,535 AUD
View
Price last confirmed 12 days ago
B+
Retailer 18
-
$7,050 AUD
View
B+
Retailer 19
-
$7,794 AUD
View
B
Retailer 20
-
$9,588 AUD
View
B
Retailer 21
-
$10,147 AUD
View
Most Expensive
B
NZ Jewellers
8e292ed4-27ca-407b-8ce0-f56f7954f340 · Nov 5
$11,129 AUD
$7,647 USD
View
21 more retailers have this diamond
Prices start from $4,750 AUDSave up to $6,379 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
$4,750 AUD