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Heart|Natural|IGI

1.21ct I SI2 Heart Natural Diamond

VG • I/SI2 • IGI 803629066

Shape and cutting style on the report: Heart brilliant

Certificate IGI 803629066

Diamond specifications and retailer prices

From $2,052 SGD
As of November 6, 2026
Save $1,939 SGD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,740 SGD at NZ Jewellers · As of September 30, 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 SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 803629066. Listed at 15 retailers as of November 4, 2026, with a 95% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 803629066
Dimensions6.62 × 7.35 × 4.40 mm
L/W Ratio1.11
Girdle conditionFaceted
Top View
6.62 mm7.35 mm1.21 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803629066
Side View
Table 56.0%Crown 35.8°Girdle: MED-THKPavilion 41.2°Culet: NoneDepth 59.9%

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 6
Current: $2,076 SGD|Low: $1,990 SGD|High: $4,173 SGD|Avg: $2,644 SGD|+4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2$2,052 SGD
Retailer 1$2,076 SGD
Retailer 6$2,307 SGD
Retailer 8$2,354 SGD
Retailer 7$2,393 SGD
Retailer 4$2,426 SGD
Retailer 9$2,800 SGD
Retailer 3$2,858 SGD
Retailer 5$3,991 SGD

25 data points across 9 retailers

15 retailers$2,052 SGD to $3,991 SGD

A
Cheapest Retailer
-
$2,052 SGD
A
Retailer 2
-
$2,076 SGD
View
Final sale: no returns
B+
Retailer 3
-
$2,307 SGD
View
Retailer 4
-
$2,354 SGD
View
Price last confirmed 54 days ago
Retailer 5
-
$2,354 SGD
View
Price last confirmed 37 days ago
Retailer 6
-
$2,354 SGD
View
Price last confirmed 22 days ago
B+
Retailer 7
-
$2,393 SGD
View
B+
Retailer 8
-
$2,426 SGD
View
Retailer 9
-
$2,462 SGD
View
Price last confirmed 37 days ago
Retailer 10
-
$2,716 SGD
View
Price last confirmed 62 days ago
Retailer 11
-
$2,716 SGD
View
Price last confirmed 39 days ago
Retailer 12
-
$2,716 SGD
View
Price last confirmed 53 days ago
B+
Retailer 13
-
$2,858 SGD
View
B
Retailer 14
-
$3,991 SGD
View
Most Expensive
NZ Jewellers
9c76d632-0bfd-48a8-bcfa-fa835756c98a · Sep 30
$5,740 SGD
$4,479 USD
View
Price last confirmed 37 days ago
14 more retailers have this diamond
Prices start from $2,052 SGDSave up to $1,939 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
$2,052 SGD