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Heart|Natural|IGI

1.21ct I SI1 Heart Natural Diamond

VG • I/SI1 • IGI 788607601

Shape and cutting style on the report: Heart brilliant

Certificate IGI 788607601

Diamond specifications and retailer prices

From $2,304 SGD
As of November 4, 2026
Save $3,917 SGD (63%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,221 SGD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 788607601. Listed at 15 retailers as of November 3, 2026, with prices from $2,304 to $6,221, a $3,917 spread on the same certified stone. NZ Jewellers lists it at $6,221. 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
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 788607601
Dimensions6.57 × 7.20 × 4.42 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Top View
6.57 mm7.20 mm1.21 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 788607601
Side View
Table 62.0%Crown 37.3°Girdle: MED-THKPavilion 41.6°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $6,221 SGD|Low: $2,304 SGD|High: $6,221 SGD|Avg: $3,228 SGD|+13.2%
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
Retailer 14
Retailer 15
Retailer 16
November 4, 2026
Retailer 3$2,304 SGD
Retailer 7$2,353 SGD
Retailer 13$2,488 SGD
Retailer 16$2,539 SGD
Retailer 10$2,550 SGD
Retailer 2$2,595 SGD
Retailer 8$2,629 SGD
Retailer 12$2,668 SGD
Retailer 4$2,677 SGD
Retailer 14$2,727 SGD
Retailer 11$2,822 SGD
Retailer 5$2,943 SGD
Retailer 6$3,134 SGD
Retailer 9$3,468 SGD
Retailer 15$4,468 SGD
NZ Jewellers$6,221 SGD

30 data points across 16 retailers

15 retailers$2,304 SGD to $6,221 SGD

A
Cheapest Retailer
-
$2,304 SGD
A
Retailer 2
-
$2,488 SGD
View
B+
Retailer 3
-
$2,539 SGD
View
A
Retailer 4
-
$2,550 SGD
View
B+
Retailer 5
-
$2,595 SGD
View
Retailer 6
-
$2,629 SGD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$2,668 SGD
View
B+
Retailer 8
-
$2,677 SGD
View
B+
Retailer 9
-
$2,727 SGD
View
B+
Retailer 10
-
$2,822 SGD
View
B+
Retailer 11
-
$2,943 SGD
View
B+
Retailer 12
-
$3,134 SGD
View
B
Retailer 13
-
$3,468 SGD
View
B
Retailer 14
-
$4,468 SGD
View
Most Expensive
C
NZ Jewellers
e7f57f2b-408c-44ac-805d-a1c3ad3009ff · Nov 3
$6,221 SGD
$4,854 USD
View
14 more retailers have this diamond
Prices start from $2,304 SGDSave up to $3,917 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
$2,304 SGD