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Heart|Natural|IGI

1.31ct K SI2 Heart Natural Diamond

VG • K/SI2 • IGI 189553311

Shape and cutting style on the report: Heart brilliant

Certificate IGI 189553311

Diamond specifications and retailer prices

From $1,544 USD
As of November 6, 2026
Save $1,316 USD (46%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,860 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.31ct natural heart diamond

This 1.31ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 189553311. Listed at 2 retailers as of November 1, 2026, with prices from $1,544 to $2,860, a $1,316 spread on the same certified stone. MOH London lists it at $2,860. 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

1.31
Carat
K
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
Crown angle40°
Pavilion angle39°
OriginNatural
Grading LabIGI
CertificateIGI 189553311
Dimensions6.73 × 7.67 × 4.24 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizePointed
Top View
6.73 mm7.67 mm1.31 ctK / SI2
OriginNatural
CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI 189553311
Side View
Table 62.5%Crown 40°Girdle: MED-THKPavilion 39°Culet: NoneDepth 55.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: $2,860 USD|Low: $1,521 USD|High: $2,894 USD|Avg: $2,200 USD
MOH London
Retailer 2
Retailer 3
November 1, 2026
Retailer 2$1,544 USD
Retailer 3$2,178 USD
MOH London$2,860 USD

9 data points across 3 retailers

2 retailers$1,544 USD to $2,860 USD

B+
Cheapest Retailer
-
$1,544 USD
Most Expensive
B
MOH London
12CC94641 · Nov 1
$2,860 USD
£2,252 GBP
View
1 more retailer has this diamond
Prices start from $1,544 USDSave up to $1,316 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.

B+
1.31ct Heart
$1,544 USD