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Heart|Natural|GIA

1.21ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 2203906541

Certificate GIA 2203906541

Diamond specifications and retailer prices

From $4,593 SGD
As of November 6, 2026
Save $4,884 SGD (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,478 SGD at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2203906541. Listed at 19 retailers as of November 4, 2026, with prices from $4,593 to $9,478, a $4,884 spread on the same certified stone. MOH London lists it at $9,478. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

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

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2203906541
Dimensions6.42 × 5.69 × 3.79 mm
L/W Ratio1.13
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.42 mm5.69 mm1.21 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2203906541
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.6%

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 6
Current: $9,478 SGD|Low: $3,923 SGD|High: $9,618 SGD|Avg: $5,983 SGD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10$4,593 SGD
Retailer 6$4,707 SGD
Retailer 5$4,756 SGD
Retailer 7$4,989 SGD
Retailer 9$5,406 SGD
Retailer 3$5,839 SGD
Retailer 8$6,015 SGD
Retailer 2$6,346 SGD
Retailer 4$7,279 SGD
MOH London$9,478 SGD

46 data points across 10 retailers

19 retailers$4,593 SGD to $9,478 SGD

B+
Cheapest Retailer
-
$4,593 SGD
B+
Retailer 2
-
$4,661 SGD
View
B+
Retailer 3
-
$4,707 SGD
View
B
Retailer 4
-
$4,756 SGD
View
B
Retailer 5
-
$4,766 SGD
View
B
Retailer 6
-
$4,989 SGD
View
Final sale: no returns
B
Retailer 7
-
$5,139 SGD
View
B
Retailer 8
-
$5,381 SGD
View
Retailer 9
-
$5,406 SGD
View
Price last confirmed 8 days ago
B
Retailer 10
-
$5,493 SGD
View
Retailer 11
-
$5,517 SGD
View
Price last confirmed 14 days ago
B
Retailer 12
-
$5,740 SGD
View
B
Retailer 13
-
$5,839 SGD
View
Retailer 14
-
$6,015 SGD
View
Price last confirmed 28 days ago
B
Retailer 15
-
$6,223 SGD
View
B
Retailer 16
-
$6,346 SGD
View
B
Retailer 17
-
$7,279 SGD
View
C
Retailer 18
-
$8,630 SGD
View
Most Expensive
B
MOH London
134D3AFB4 · Nov 4
$9,478 SGD
£5,823 GBP
View
18 more retailers have this diamond
Prices start from $4,593 SGDSave up to $4,884 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 Heart
$4,593 SGD