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Cushion|Lab Grown|IGI

3.05ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG812619683

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG812619683

Diamond specifications and retailer prices

From $714 NZD
As of November 6, 2026
Save $3,904 NZD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,618 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG812619683 or 812619683. Listed at 15 retailers as of November 6, 2026, with prices from $714 to $4,618, a $3,904 spread on the same certified stone. Brilliant Earth lists it at $4,618. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812619683
Dimensions10.28 × 7.42 × 4.67 mm
L/W Ratio1.39
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.28 mm7.42 mm3.05 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812619683
Side View
Table 61.0%Crown 34.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $4,618 NZD|Low: $714 NZD|High: $4,618 NZD|Avg: $1,907 NZD
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
Retailer 14
Retailer 15
November 6, 2026
Retailer 12$714 NZD
Retailer 6$877 NZD
Retailer 8$965 NZD
Retailer 11$1,064 NZD
Retailer 2$1,223 NZD
Retailer 13$1,274 NZD
Retailer 7$1,373 NZD
Retailer 9$1,414 NZD
Retailer 14$1,865 NZD
Retailer 4$1,979 NZD
Retailer 15$1,992 NZD
Retailer 3$2,538 NZD
Retailer 10$3,092 NZD
Retailer 5$3,518 NZD
Brilliant Earth$4,618 NZD

30 data points across 15 retailers

15 retailers$714 NZD to $4,618 NZD

A
Cheapest Retailer
-
$714 NZD
Final sale: no returns
A
Retailer 2
-
$877 NZD
View
A
Retailer 3
-
$965 NZD
View
A
Retailer 4
-
$1,064 NZD
View
A
Retailer 5
-
$1,223 NZD
View
B+
Retailer 6
-
$1,274 NZD
View
Retailer 7
-
$1,373 NZD
View
Price last confirmed 12 days ago
A
Retailer 8
-
$1,414 NZD
View
A
Retailer 9
-
$1,865 NZD
View
A
Retailer 10
-
$1,979 NZD
View
B+
Retailer 11
-
$1,992 NZD
View
B+
Retailer 12
-
$2,538 NZD
View
B+
Retailer 13
-
$3,092 NZD
View
Retailer 14
-
$3,518 NZD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
20319639A · Nov 6
$4,618 NZD
$2,560 USD
View
14 more retailers have this diamond
Prices start from $714 NZDSave up to $3,904 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
$714 NZD