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Heart|Natural|GIA

1.21ct J SI1 Heart Natural Diamond

GD • J/SI1 • GIA 7458197631

Certificate GIA 7458197631

Diamond specifications and retailer prices

From $2,673 SGD
As of November 6, 2026
Save $2,498 SGD (48%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,171 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7458197631. Listed at 12 retailers as of November 4, 2026, with prices from $2,673 to $5,171, a $2,498 spread on the same certified stone. MOH London lists it at $5,171. 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
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7458197631
Dimensions6.47 × 5.84 × 3.91 mm
L/W Ratio1.11
Top View
6.47 mm5.84 mm1.21 ctJ / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7458197631
Side View
Table 65.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.0%

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: $5,171 SGD|Low: $2,227 SGD|High: $5,247 SGD|Avg: $3,373 SGD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$2,673 SGD
Retailer 2$2,705 SGD
Retailer 9$2,870 SGD
Retailer 6$2,960 SGD
Retailer 5$2,966 SGD
Retailer 4$3,612 SGD
Retailer 3$3,640 SGD
Retailer 8$3,656 SGD
MOH London$5,171 SGD

37 data points across 9 retailers

12 retailers$2,673 SGD to $5,171 SGD

B+
Cheapest Retailer
-
$2,673 SGD
B+
Retailer 2
-
$2,705 SGD
View
Final sale: no returns
B
Retailer 3
-
$2,870 SGD
View
B
Retailer 4
-
$2,960 SGD
View
B
Retailer 5
-
$2,966 SGD
View
B
Retailer 6
-
$2,985 SGD
View
B
Retailer 7
-
$3,137 SGD
View
B
Retailer 8
-
$3,246 SGD
View
B
Retailer 9
-
$3,612 SGD
View
B
Retailer 10
-
$3,640 SGD
View
Retailer 11
-
$3,656 SGD
View
Price last confirmed 34 days ago
Most Expensive
C
MOH London
CA0DCDDA5 · Nov 4
$5,171 SGD
£3,177 GBP
View
11 more retailers have this diamond
Prices start from $2,673 SGDSave up to $2,498 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
$2,673 SGD