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Radiant|Natural|GIA

1.21ct D SI1 Radiant Natural Diamond

EX • D/SI1 • GIA 1548626456

Certificate GIA 1548626456

Diamond specifications and retailer prices

From $4,315 AUD
As of November 3, 2026
Save $3,397 AUD (44%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $7,712 AUD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.21ct natural radiant diamond

This 1.21ct 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 1548626456. Listed at 8 retailers as of November 3, 2026, with prices from $4,315 to $7,712, a $3,397 spread on the same certified stone. NZ Jewellers lists it at $7,712. 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

1.21
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle54.45°
Pavilion angle34.68°
OriginNatural
Grading LabGIA
CertificateGIA 1548626456
Dimensions6.81 × 5.33 × 3.71 mm
L/W Ratio1.28
Girdle conditionThick
Key to symbols
Crystal, Pinpoint
Top View
6.81 mm5.33 mm1.21 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1548626456
Side View
Table 72.0%Crown 54.45°Girdle: ThickPavilion 34.68°Culet: NoneDepth 69.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $7,712 AUD|Low: $4,315 AUD|High: $7,900 AUD|Avg: $5,348 AUD|-2.4%
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
November 2, 2026
Retailer 9$4,315 AUD
Retailer 2$4,317 AUD
Retailer 8$4,427 AUD
Retailer 7$4,598 AUD
Retailer 11$4,644 AUD
Retailer 10$4,729 AUD
Retailer 5$4,995 AUD
Retailer 4$5,025 AUD
Retailer 13$5,205 AUD
Retailer 12$5,269 AUD
Retailer 3$5,522 AUD
Retailer 6$7,402 AUD
NZ Jewellers$7,712 AUD

34 data points across 13 retailers

8 retailers$4,315 AUD to $7,712 AUD

A
Cheapest Retailer
-
$4,315 AUD
A
Retailer 2
-
$4,317 AUD
View
A
Retailer 3
-
$4,427 AUD
View
A
Retailer 4
-
$4,598 AUD
View
A
Retailer 5
-
$4,644 AUD
View
Retailer 6
-
$4,729 AUD
View
Price last confirmed 31 days ago
B
Retailer 7
-
$7,402 AUD
View
Most Expensive
B
NZ Jewellers
b32c0587-4dbb-4cc1-b33c-78e9665a1bb0 · Nov 3
$7,712 AUD
$5,299 USD
View
7 more retailers have this diamond
Prices start from $4,315 AUDSave up to $3,397 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
1.21ct Radiant
$4,315 AUD