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Heart|Natural|IGI

1.20ct K SI1 Heart Natural Diamond

GD • K/SI1 • IGI 270787421

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI 270787421

Diamond specifications and retailer prices

From $2,067 NZD
As of November 6, 2026
Save $1,614 NZD (44%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $3,682 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI 270787421. Listed at 4 retailers as of November 4, 2026, with prices from $2,067 to $3,682, a $1,614 spread on the same certified stone. MOH London lists it at $3,682. 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
K
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryGood
FluorescenceFaint
Crown angle39°
Pavilion angle32.8°
OriginNatural
Grading LabIGI
CertificateIGI 270787421
Dimensions6.50 × 5.65 × 3.93 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizePointed
Top View
6.50 mm5.65 mm1.20 ctK / SI1
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceFaint
CertificateIGI 270787421
Side View
Table 54.5%Crown 39°Girdle: STK-VTKPavilion 32.8°Culet: NoneDepth 69.6%

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: $3,682 NZD|Low: $1,806 NZD|High: $3,737 NZD|Avg: $2,488 NZD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 5$1,806 NZD
Retailer 4$2,067 NZD
Retailer 3$2,311 NZD
Retailer 2$2,809 NZD
MOH London$3,682 NZD

40 data points across 5 retailers

4 retailers$2,067 NZD to $3,682 NZD

B+
Cheapest Retailer
-
$2,067 NZD
B+
Retailer 2
-
$2,311 NZD
View
B+
Retailer 3
-
$2,809 NZD
View
Most Expensive
B
MOH London
47E42449B · Nov 4
$3,682 NZD
£1,607 GBP
View
3 more retailers have this diamond
Prices start from $2,067 NZDSave up to $1,614 NZD

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+
1.20ct Heart
$2,067 NZD