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Radiant|Natural|GIA

1.21ct D SI1 Radiant Natural Diamond

EX • D/SI1 • GIA 2546545145

Certificate GIA 2546545145

Diamond specifications and retailer prices

From $5,485 AUD
As of November 2, 2026
Save $4,314 AUD (44%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $9,799 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 2546545145. Listed at 9 retailers as of November 2, 2026, with prices from $5,485 to $9,799, a $4,314 spread on the same certified stone. NZ Jewellers lists it at $9,799. 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 angle44.86°
Pavilion angle30.58°
OriginNatural
Grading LabGIA
CertificateGIA 2546545145
Dimensions6.73 × 5.27 × 3.61 mm
L/W Ratio1.28
Top View
6.73 mm5.27 mm1.21 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2546545145
Side View
Table 65.0%Crown 44.86°Girdle: Thick to Very ThickPavilion 30.58°Culet: NDepth 68.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $9,799 AUD|Low: $5,378 AUD|High: $9,849 AUD|Avg: $6,629 AUD|-0.5%
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
November 7, 2026
Retailer 8$5,485 AUD
Retailer 2$5,625 AUD
Retailer 10$5,625 AUD
Retailer 12$5,836 AUD
Retailer 6$5,841 AUD
Retailer 11$6,024 AUD
Retailer 13$6,185 AUD
Retailer 3$6,222 AUD
Retailer 7$6,341 AUD
Retailer 4$6,433 AUD
Retailer 5$6,520 AUD
Retailer 9$9,406 AUD
NZ Jewellers$9,799 AUD

36 data points across 13 retailers

9 retailers$5,485 AUD to $9,799 AUD

B+
Cheapest Retailer
-
$5,485 AUD
B+
Retailer 2
-
$5,625 AUD
View
B+
Retailer 3
-
$5,625 AUD
View
B+
Retailer 4
-
$5,836 AUD
View
B+
Retailer 5
-
$5,841 AUD
View
Retailer 6
-
$6,024 AUD
View
Price last confirmed 30 days ago
B+
Retailer 7
-
$6,341 AUD
View
B
Retailer 8
-
$9,406 AUD
View
Most Expensive
B
NZ Jewellers
9b8fbcd2-e172-42d0-aa3f-7ebb04cf6ed0 · Nov 3
$9,799 AUD
$6,733 USD
View
8 more retailers have this diamond
Prices start from $5,485 AUDSave up to $4,314 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.

B+
1.21ct Radiant
$5,485 AUD