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Cushion|Lab Grown|IGI

1.55ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG818620978

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG818620978

Diamond specifications and retailer prices

From $1,132 NZD
$638 USD
As of October 30, 2026
Save $2,363 NZD (68%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,495 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.55ct lab-grown cushion diamond

This 1.55ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818620978 or 818620978. Listed at 8 retailers as of October 29, 2026, with prices from $1,132 to $3,495, a $2,363 spread on the same certified stone. MOH London lists it at $3,495. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818620978
Dimensions6.70 × 6.64 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.70 mm6.64 mm1.55 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818620978
Side View
Table 58.0%Crown 37.1°Girdle: MED-THKPavilion 35.5°Culet: NoneDepth 63.7%

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: $3,495 NZD|Low: $1,132 NZD|High: $3,520 NZD|Avg: $2,036 NZD|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 4$1,132 NZD
Retailer 6$1,322 NZD
Retailer 2$1,421 NZD
Retailer 3$1,462 NZD
Retailer 7$1,954 NZD
Retailer 5$2,829 NZD
Retailer 8$2,924 NZD
MOH London$3,495 NZD

37 data points across 8 retailers

8 retailers$1,132 NZD to $3,495 NZD

A
Cheapest Retailer
-
$1,132 NZD
$638 USD
A
Retailer 2
-
$1,322 NZD
$745 USD
View
A
Retailer 3
-
$1,421 NZD
€763 EUR
View
A
Retailer 4
-
$1,462 NZD
£649 GBP
View
A
Retailer 5
-
$1,954 NZD
$1,101 USD
View
Retailer 6
-
$2,829 NZD
A$2,453 AUD
View
Price last confirmed 23 days ago
B+
Retailer 7
-
$2,924 NZD
$1,648 USD
View
Most Expensive
B+
MOH London
LG818620978 · Oct 29
$3,495 NZD
£1,551 GBP
View
7 more retailers have this diamond
Prices start from $1,132 NZDSave up to $2,363 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.

A
1.55ct Cushion
$1,132 NZD