CaratHunter
Plans
Cushion|Lab Grown|IGI

1.55ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG591369468

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG591369468

Diamond specifications and retailer prices

From $351 NZD
$197 USD
As of October 30, 2026
Save $2,658 NZD (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,009 NZD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG591369468 or 591369468. Listed at 14 retailers as of October 29, 2026, with prices from $351 to $3,009, a $2,658 spread on the same certified stone. Do Amore Diamonds lists it at $3,009. 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

1.55
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591369468
Dimensions7.37 × 6.35 × 4.35 mm
L/W Ratio1.16
Girdle conditionFaceted
Culet sizePointed
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
7.37 mm6.35 mm1.55 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591369468
Side View
Table 63.0%Crown 36.5°Girdle: THN-STKPavilion 39.4°Culet: NoneDepth 68.5%

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: $782 NZD|Low: $351 NZD|High: $3,241 NZD|Avg: $1,317 NZD|+4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 7$351 NZD
Retailer 9$523 NZD
Retailer 2$707 NZD
Retailer 1$782 NZD
Retailer 8$988 NZD
Retailer 5$1,609 NZD
Retailer 3$2,015 NZD
Retailer 6$2,297 NZD
Retailer 4$2,457 NZD

42 data points across 9 retailers

14 retailers$351 NZD to $3,009 NZD

A
Cheapest Retailer
-
$351 NZD
$197 USD
Final sale: no returns
B+
Retailer 2
-
$523 NZD
$294 USD
View
A
Retailer 3
-
$648 NZD
$364 USD
View
A
Retailer 4
-
$707 NZD
€378 EUR
View
A
Retailer 5
-
$782 NZD
£346 GBP
View
B+
Retailer 6
-
$988 NZD
$555 USD
View
B+
Retailer 7
-
$1,466 NZD
$823 USD
View
B+
Retailer 8
-
$1,609 NZD
$904 USD
View
B
Retailer 9
-
$2,015 NZD
£891 GBP
View
B
Retailer 10
-
$2,261 NZD
$1,270 USD
View
B
Retailer 11
-
$2,261 NZD
$1,270 USD
View
B
Retailer 12
-
$2,297 NZD
$1,290 USD
View
B
Retailer 13
-
$2,457 NZD
$1,380 USD
View
Most Expensive
B
Do Amore Diamonds
27-7C1DA9D49 · Oct 29
$3,009 NZD
$1,690 USD
View
13 more retailers have this diamond
Prices start from $351 NZDSave up to $2,658 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
$351 NZD