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Cushion|Lab Grown|IGI

3.05ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG529243211

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG529243211

Diamond specifications and retailer prices

From $1,136 NZD
As of November 6, 2026
Save $7,107 NZD (86%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,244 NZD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 3.05ct lab-grown cushion diamond

This 3.05ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG529243211 or 529243211. Listed at 8 retailers as of November 6, 2026, with prices from $1,136 to $8,244, a $7,107 spread on the same certified stone. Brilliant Earth lists it at $8,244. 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

3.05
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG529243211
Dimensions8.60 × 7.86 × 5.22 mm
L/W Ratio1.09
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
8.60 mm7.86 mm3.05 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG529243211
Side View
Table 64.5%Crown 33°Girdle: THK-VTKPavilion 34.3°Culet: NoneDepth 66.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $8,244 NZD|Low: $1,097 NZD|High: $8,496 NZD|Avg: $3,051 NZD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 7$1,136 NZD
Retailer 4$1,497 NZD
Retailer 6$1,757 NZD
Retailer 5$1,939 NZD
Retailer 3$1,943 NZD
Retailer 2$5,448 NZD
Brilliant Earth$8,244 NZD

42 data points across 7 retailers

8 retailers$1,136 NZD to $8,244 NZD

A
Cheapest Retailer
-
$1,136 NZD
Final sale: no returns
A
Retailer 2
-
$1,497 NZD
View
A
Retailer 3
-
$1,757 NZD
View
B+
Retailer 4
-
$1,939 NZD
View
A
Retailer 5
-
$1,943 NZD
View
B
Retailer 6
-
$4,062 NZD
View
B
Retailer 7
-
$5,448 NZD
View
Most Expensive
B
Brilliant Earth
17971335A · Nov 6
$8,244 NZD
$4,570 USD
View
7 more retailers have this diamond
Prices start from $1,136 NZDSave up to $7,107 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
3.05ct Cushion
$1,136 NZD