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Cushion|Lab Grown|IGI

1.03ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG818663185

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

Certificate IGI LG818663185

Diamond specifications and retailer prices

From $877 NZD
€469 EUR
As of October 23, 2026
Save $1,972 NZD (69%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,849 NZD at Brilliant Earth · As of October 24, 2026
View at Brilliant Earth

About this 1.03ct lab-grown cushion diamond

This 1.03ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818663185 or 818663185. Listed at 11 retailers as of October 23, 2026, with prices from $877 to $2,849, a $1,972 spread on the same certified stone. Brilliant Earth lists it at $2,849. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818663185
Dimensions6.08 × 6.02 × 3.81 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
6.08 mm6.02 mm1.03 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818663185
Side View
Table 62.0%Crown 34.1°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 63.3%

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 23
Current: $2,849 NZD|Low: $369 NZD|High: $2,938 NZD|Avg: $1,363 NZD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 24, 2026
Retailer 12$475 NZD
Retailer 4$529 NZD
Retailer 6$877 NZD
Retailer 5$890 NZD
Retailer 3$894 NZD
Retailer 7$895 NZD
Retailer 2$967 NZD
Retailer 10$1,058 NZD
Retailer 11$1,794 NZD
Retailer 9$2,146 NZD
Retailer 8$2,297 NZD
Retailer 13$2,351 NZD
Brilliant Earth$2,849 NZD

31 data points across 13 retailers

11 retailers$877 NZD to $2,849 NZD

Retailer 1
-
$529 NZD
$297 USD
Price last confirmed 18 days ago
A
Retailer 2
-
$877 NZD
€469 EUR
View
Retailer 3
-
$894 NZD
$502 USD
View
Price last confirmed 7 days ago
Retailer 4
-
$895 NZD
ZAR 8,119 ZAR
View
Price last confirmed 7 days ago
A
Retailer 5
-
$967 NZD
£428 GBP
View
A
Retailer 6
-
$1,058 NZD
$594 USD
View
B+
Retailer 7
-
$1,794 NZD
$1,007 USD
View
Retailer 8
-
$2,146 NZD
£949 GBP
View
Price last confirmed 19 days ago
Retailer 9
-
$2,297 NZD
$1,290 USD
View
Price last confirmed 11 days ago
Retailer 10
-
$2,351 NZD
$1,320 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Brilliant Earth
21242453A · Oct 24
$2,849 NZD
$1,600 USD
View
10 more retailers have this diamond
Prices start from $877 NZDSave up to $1,972 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
1.03ct Cushion
$877 NZD