CaratHunter
Plans
Heart|Natural|IGI

1.51ct G SI1 Heart Natural Diamond

VG • G/SI1 • IGI 801639168

Shape and cutting style on the report: Heart brilliant

Certificate IGI 801639168

Diamond specifications and retailer prices

From $3,419 USD
As of November 1, 2026
Save $3,291 USD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,710 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 801639168. Listed at 15 retailers as of October 30, 2026, with prices from $3,419 to $6,710, a $3,291 spread on the same certified stone. NZ Jewellers lists it at $6,710. 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

1.51
Carat
G
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41.3°
OriginNatural
Grading LabIGI
CertificateIGI 801639168
Dimensions7.04 × 7.68 × 4.70 mm
L/W Ratio1.09
Girdle conditionFaceted
Top View
7.04 mm7.68 mm1.51 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 801639168
Side View
Table 61.0%Crown 36.5°Girdle: STK-THKPavilion 41.3°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: Nov 1
Current: $6,710 USD|Low: $3,419 USD|High: $6,710 USD|Avg: $4,160 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
Retailer 13
Retailer 14
Retailer 15
November 2, 2026
Retailer 5$3,419 USD
Retailer 12$3,420 USD
Retailer 6$3,484 USD
Retailer 4$3,554 USD
Retailer 2$3,629 USD
Retailer 3$3,851 USD
Retailer 13$3,851 USD
Retailer 7$3,998 USD
Retailer 15$3,999 USD
Retailer 9$4,013 USD
Retailer 14$4,444 USD
Retailer 8$4,509 USD
Retailer 11$4,734 USD
Retailer 10$6,441 USD
NZ Jewellers$6,710 USD

14 data points across 15 retailers

15 retailers$3,419 USD to $6,710 USD

A
Cheapest Retailer
-
$3,419 USD
A
Retailer 2
-
$3,420 USD
View
A
Retailer 3
-
$3,484 USD
View
A
Retailer 4
-
$3,554 USD
View
Final sale: no returns
A
Retailer 5
-
$3,629 USD
£2,857 GBP
View
A
Retailer 6
-
$3,851 USD
View
A
Retailer 7
-
$3,851 USD
View
B+
Retailer 8
-
$3,998 USD
View
B+
Retailer 9
-
$3,999 USD
View
A
Retailer 10
-
$4,013 USD
£3,160 GBP
View
B+
Retailer 11
-
$4,444 USD
View
B+
Retailer 12
-
$4,509 USD
€4,294 EUR
View
B+
Retailer 13
-
$4,734 USD
ZAR 76,479 ZAR
View
B
Retailer 14
-
$6,441 USD
£5,072 GBP
View
Most Expensive
B
NZ Jewellers
486ccb40-1214-460a-8f96-964fb2254931 · Oct 30
$6,710 USD
View
14 more retailers have this diamond
Prices start from $3,419 USDSave up to $3,291 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
1.51ct Heart
$3,419 USD