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Heart|Natural|IGI

1.20ct I SI1 Heart Natural Diamond

VG • I/SI1 • IGI 749558736

Shape and cutting style on the report: Heart brilliant

Certificate IGI 749558736

Diamond specifications and retailer prices

From $1,548 USD
As of October 31, 2026
Save $3,336 USD (68%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,884 USD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct 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 749558736. Listed at 16 retailers as of October 31, 2026, with prices from $1,548 to $4,884, a $3,336 spread on the same certified stone. NZ Jewellers lists it at $4,884. 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

1.20
Carat
I
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle38.4°
OriginNatural
Grading LabIGI
CertificateIGI 749558736
Dimensions6.70 × 7.35 × 4.11 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Top View
6.70 mm7.35 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 749558736
Side View
Table 62.0%Crown 32.6°Girdle: STK-THKPavilion 38.4°Culet: NoneDepth 55.9%

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: Oct 31
Current: $4,884 USD|Low: $1,548 USD|High: $4,884 USD|Avg: $2,434 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 9$1,548 USD
Retailer 4$1,848 USD
Retailer 7$1,949 USD
Retailer 10$2,002 USD
Retailer 12$2,002 USD
Retailer 11$2,095 USD
Retailer 5$2,212 USD
Retailer 2$2,443 USD
Retailer 8$2,625 USD
Retailer 3$2,956 USD
Retailer 6$3,498 USD
NZ Jewellers$4,884 USD

33 data points across 12 retailers

16 retailers$1,548 USD to $4,884 USD

A
Cheapest Retailer
-
$1,548 USD
B+
Retailer 2
-
$1,808 USD
View
B+
Retailer 3
-
$1,848 USD
View
Final sale: no returns
A
Retailer 4
-
$1,949 USD
View
B+
Retailer 5
-
$2,002 USD
View
B+
Retailer 6
-
$2,002 USD
View
B+
Retailer 7
-
$2,040 USD
View
B+
Retailer 8
-
$2,095 USD
View
B+
Retailer 9
-
$2,140 USD
View
B+
Retailer 10
-
$2,212 USD
View
Retailer 11
-
$2,310 USD
View
Price last confirmed 27 days ago
B+
Retailer 12
-
$2,443 USD
View
B
Retailer 13
-
$2,625 USD
View
B
Retailer 14
-
$2,956 USD
View
B
Retailer 15
-
$3,498 USD
View
Most Expensive
C
NZ Jewellers
ede8d819-5314-4d83-b522-5ab9ddfebec2 · Nov 3
$4,884 USD
View
15 more retailers have this diamond
Prices start from $1,548 USDSave up to $3,336 USD

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
1.20ct Heart
$1,548 USD