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Heart|Lab Grown|IGI

1.22ct H SI2 Heart Lab Grown Diamond

VG • H/SI2 • IGI LG654475450

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG654475450

Diamond specifications and retailer prices

From $4,203 NZD
As of November 5, 2026
Save $741 NZD (15%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $8,231 NZD at MOH London · As of October 26, 2026
View at MOH London

About this 1.22ct lab-grown heart diamond

This 1.22ct lab-grown heart sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG654475450 or 654475450. Listed at 5 retailers as of November 5, 2026, with a relatively tight 18% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.22
Carat
H
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.1°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG654475450
Dimensions6.57 × 7.44 × 4.15 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizePointed
Top View
6.57 mm7.44 mm1.22 ctH / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG654475450
Side View
Table 66.0%Crown 42.1°Girdle: MED-STKPavilion 37.1°Culet: NoneDepth 55.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $8,231 NZD|Low: $3,115 NZD|High: $12,072 NZD|Avg: $6,105 NZD
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 4$3,115 NZD
Retailer 6$4,203 NZD
Retailer 5$4,329 NZD
Retailer 7$4,486 NZD
Retailer 2$4,613 NZD
Retailer 10$4,944 NZD
Retailer 9$5,583 NZD
Retailer 12$5,726 NZD
Retailer 3$7,580 NZD
Retailer 8$7,766 NZD
MOH London$8,231 NZD
Retailer 11$12,072 NZD

26 data points across 12 retailers

5 retailers$4,203 NZD to $4,944 NZD

B
Cheapest Retailer
-
$4,203 NZD
B
Retailer 2
-
$4,329 NZD
View
Final sale: no returns
B
Retailer 3
-
$4,613 NZD
View
B
Retailer 4
-
$4,944 NZD
View
Most Expensive
MOH London
3766EC76C · Oct 26
$8,231 NZD
£3,593 GBP
View
Price last confirmed 11 days ago
4 more retailers have this diamond
Prices start from $4,203 NZDSave up to $741 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
1.22ct Heart
$4,203 NZD