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Heart|Natural|IGI

0.51ct I SI2 Heart Natural Diamond

VG • I/SI2 • IGI 692555256

Shape and cutting style on the report: Heart brilliant

Certificate IGI 692555256

Diamond specifications and retailer prices

From $332 USD
₹31,644 INR
As of October 30, 2026
Save $713 USD (68%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,734 USD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 692555256. Listed at 8 retailers as of October 30, 2026, with a 215% 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

0.51
Carat
I
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle44°
Pavilion angle42.7°
OriginNatural
Grading LabIGI
CertificateIGI 692555256
Dimensions4.79 × 5.29 × 3.24 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizeNone
Top View
4.79 mm5.29 mm0.51 ctI / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateIGI 692555256
Side View
Table 61.0%Crown 44°Girdle: STK-VTKPavilion 42.7°Culet: NoneDepth 61.2%

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 30
Current: $1,734 USD|Low: $330 USD|High: $1,743 USD|Avg: $739 USD|-0.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 5$332 USD
Retailer 8$513 USD
Retailer 2$540 USD
Retailer 7$583 USD
Retailer 6$634 USD
Retailer 4$686 USD
Retailer 3$1,045 USD
NZ Jewellers$1,734 USD

39 data points across 8 retailers

8 retailers$332 USD to $1,045 USD

A
Cheapest Retailer
-
$332 USD
₹31,644 INR
B+
Retailer 2
-
$540 USD
£425 GBP
View
B
Retailer 3
-
$583 USD
View
B
Retailer 4
-
$634 USD
View
B
Retailer 5
-
$686 USD
€653 EUR
View
C
Retailer 6
-
$1,045 USD
£823 GBP
View
Retailer 7
-
$1,734 USD
View
Price under review
Most Expensive
NZ Jewellers
5bb2a694-0ad7-4da9-9867-c169d9d8d3a7 · Oct 27
$1,734 USD
View
Price under review
7 more retailers have this diamond
Prices start from $332 USDSave up to $713 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
0.51ct Heart
$332 USD