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Heart|Natural|GIA

1.21ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 1545265538

Certificate GIA 1545265538

Diamond specifications and retailer prices

From $3,035 SGD
As of November 6, 2026
Save $3,612 SGD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $7,731 SGD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545265538. Listed at 20 retailers as of November 4, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545265538
Dimensions7.33 × 6.74 × 4.30 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Cavity, Needle
Top View
7.33 mm6.74 mm1.21 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545265538
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.6%

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: $7,731 SGD|Low: $3,018 SGD|High: $7,756 SGD|Avg: $4,455 SGD|+2.3%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$3,035 SGD
Retailer 2$3,160 SGD
Retailer 7$3,577 SGD
Retailer 3$3,673 SGD
Retailer 11$3,678 SGD
Retailer 6$4,123 SGD
Retailer 10$4,169 SGD
Retailer 5$4,219 SGD
Retailer 4$4,641 SGD
Retailer 8$6,646 SGD
Queensmith$7,731 SGD

30 data points across 11 retailers

20 retailers$3,035 SGD to $6,646 SGD

A
Cheapest Retailer
-
$3,035 SGD
A
Retailer 2
-
$3,160 SGD
View
B+
Retailer 3
-
$3,577 SGD
View
B+
Retailer 4
-
$3,673 SGD
View
B+
Retailer 5
-
$3,678 SGD
View
Final sale: no returns
B+
Retailer 6
-
$3,765 SGD
View
Retailer 7
-
$4,008 SGD
View
Price last confirmed 19 days ago
Retailer 8
-
$4,008 SGD
View
Price last confirmed 21 days ago
Retailer 9
-
$4,029 SGD
View
Price last confirmed 45 days ago
B+
Retailer 10
-
$4,123 SGD
View
Retailer 11
-
$4,161 SGD
View
Price last confirmed 21 days ago
B+
Retailer 12
-
$4,169 SGD
View
B+
Retailer 13
-
$4,219 SGD
View
Retailer 14
-
$4,624 SGD
View
Price last confirmed 18 days ago
B+
Retailer 15
-
$4,641 SGD
View
Retailer 16
-
$4,650 SGD
View
Price last confirmed 45 days ago
B
Retailer 17
-
$6,646 SGD
View
Retailer 18
-
$6,982 SGD
View
Price last confirmed 19 days ago
Retailer 19
-
$7,021 SGD
View
Price last confirmed 47 days ago
Most Expensive
Queensmith
1545265538 · Oct 28
$7,731 SGD
£4,750 GBP
View
Price last confirmed 9 days ago
19 more retailers have this diamond
Prices start from $3,035 SGDSave up to $3,612 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.

A
1.21ct Heart
$3,035 SGD