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Heart|Lab Grown|IGI

2.51ct F SI1 Heart Lab Grown Diamond

ID • F/SI1 • IGI LG512231567

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG512231567

Diamond specifications and retailer prices

From $5,917 NZD
As of November 6, 2026
Save $12,986 NZD (69%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $18,903 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 2.51ct lab-grown heart diamond

This 2.51ct lab-grown heart sits in the two to three carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512231567 or 512231567. Listed at 13 retailers as of November 5, 2026, with prices from $5,917 to $18,903, a $12,986 spread on the same certified stone. MOH London lists it at $18,903. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.51
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.7°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512231567
Dimensions9.42 × 8.08 × 5.66 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.42 mm8.08 mm2.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG512231567
Side View
Table 59.5%Crown 35.7°Girdle: MED-VTKPavilion 39.4°Culet: NoneDepth 60.1%

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: $18,903 NZD|Low: $5,917 NZD|High: $19,182 NZD|Avg: $10,942 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 6$5,917 NZD
Retailer 8$7,892 NZD
Retailer 12$8,271 NZD
Retailer 4$8,837 NZD
Retailer 3$9,155 NZD
Retailer 9$9,155 NZD
Retailer 11$11,439 NZD
Retailer 5$11,749 NZD
Retailer 7$11,911 NZD
Retailer 2$12,025 NZD
Retailer 10$14,166 NZD
MOH London$18,903 NZD

44 data points across 12 retailers

13 retailers$5,917 NZD to $18,903 NZD

B+
Cheapest Retailer
-
$5,917 NZD
B
Retailer 2
-
$7,892 NZD
View
B
Retailer 3
-
$8,271 NZD
View
B
Retailer 4
-
$8,837 NZD
View
Final sale: no returns
B
Retailer 5
-
$9,155 NZD
View
Retailer 6
-
$9,155 NZD
View
Price last confirmed 26 days ago
B
Retailer 7
-
$9,236 NZD
View
B
Retailer 8
-
$11,439 NZD
View
B
Retailer 9
-
$11,749 NZD
View
B
Retailer 10
-
$11,911 NZD
View
B
Retailer 11
-
$12,025 NZD
View
B
Retailer 12
-
$14,166 NZD
View
Most Expensive
B
MOH London
LG512231567 · Nov 5
$18,903 NZD
£8,251 GBP
View
12 more retailers have this diamond
Prices start from $5,917 NZDSave up to $12,986 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+
2.51ct Heart
$5,917 NZD