Heart|Natural|IGI

1.23ct G VVS1 Heart Natural Diamond

VG • G/VVS1 • IGI 851618603

Shape and cutting style on the report: Heart brilliant

Certificate IGI 851618603

Diamond specifications and retailer prices

From $3,213 USD
As of November 5, 2026
Save $4,305 USD (57%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,518 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural heart diamond

This 1.23ct natural heart sits in the classic one-carat band, graded G colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI 851618603. Listed at 12 retailers as of November 5, 2026, with prices from $3,213 to $7,518, a $4,305 spread on the same certified stone. NZ Jewellers lists it at $7,518. 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

1.23
Carat
G
Color
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle39.5°
OriginNatural
Grading LabIGI
CertificateIGI 851618603
Dimensions6.59 × 7.26 × 4.43 mm
L/W Ratio1.10
Girdle conditionFaceted
Top View
6.59 mm7.26 mm1.23 ctG / VVS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 851618603
Side View
Table 54.0%Crown 33.1°Girdle: STK-THKPavilion 39.5°CuletDepth 61.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $7,518 USD|Low: $3,213 USD|High: $7,518 USD|Avg: $4,460 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 5$3,213 USD
Retailer 12$3,496 USD
Retailer 8$3,834 USD
Retailer 2$3,927 USD
Retailer 10$3,983 USD
Retailer 6$4,315 USD
Retailer 11$4,315 USD
Retailer 7$4,499 USD
Retailer 4$4,564 USD
Retailer 3$4,979 USD
Retailer 9$6,854 USD
NZ Jewellers$7,518 USD

3 data points across 12 retailers

12 retailers$3,213 USD to $7,518 USD

A
Cheapest Retailer
-
$3,213 USD
A
Retailer 2
-
$3,496 USD
View
B+
Retailer 3
-
$3,834 USD
View
B+
Retailer 4
-
$3,927 USD
View
B+
Retailer 5
-
$3,983 USD
View
Final sale: no returns
B+
Retailer 6
-
$4,315 USD
View
B+
Retailer 7
-
$4,315 USD
View
B+
Retailer 8
-
$4,499 USD
View
B+
Retailer 9
-
$4,564 USD
View
B
Retailer 10
-
$4,979 USD
View
B
Retailer 11
-
$6,854 USD
View
Most Expensive
B
NZ Jewellers
d3ccc593-a6fa-4142-850b-d3d27c1aa763 · Nov 5
$7,518 USD
View
11 more retailers have this diamond
Prices start from $3,213 USDSave up to $4,305 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
1.23ct Heart
$3,213 USD