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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 $4,830 SGD
As of November 2, 2026
Save $3,799 SGD (44%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $8,629 SGD 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 $4,830 to $8,629, a $3,799 spread on the same certified stone. NZ Jewellers lists it at $8,629. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $8,629 SGD|Low: $4,736 SGD|High: $8,673 SGD|Avg: $5,837 SGD|-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$4,830 SGD
Retailer 2$4,953 SGD
Retailer 10$4,953 SGD
Retailer 12$5,139 SGD
Retailer 6$5,143 SGD
Retailer 11$5,305 SGD
Retailer 13$5,447 SGD
Retailer 3$5,479 SGD
Retailer 7$5,584 SGD
Retailer 4$5,665 SGD
Retailer 5$5,742 SGD
Retailer 9$8,283 SGD
NZ Jewellers$8,629 SGD

36 data points across 13 retailers

9 retailers$4,830 SGD to $8,629 SGD

B+
Cheapest Retailer
-
$4,830 SGD
B+
Retailer 2
-
$4,953 SGD
View
B+
Retailer 3
-
$4,953 SGD
View
B+
Retailer 4
-
$5,139 SGD
View
B+
Retailer 5
-
$5,143 SGD
View
Retailer 6
-
$5,305 SGD
View
Price last confirmed 30 days ago
B+
Retailer 7
-
$5,584 SGD
View
B
Retailer 8
-
$8,283 SGD
View
Most Expensive
B
NZ Jewellers
9b8fbcd2-e172-42d0-aa3f-7ebb04cf6ed0 · Nov 3
$8,629 SGD
$6,733 USD
View
8 more retailers have this diamond
Prices start from $4,830 SGDSave up to $3,799 SGD

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
$4,830 SGD