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Cushion|Lab Grown|IGI

3.05ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG813655575

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG813655575

Diamond specifications and retailer prices

From $1,380 NZD
As of November 6, 2026
Save $7,171 NZD (84%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $8,550 NZD at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

About this 3.05ct lab-grown cushion diamond

This 3.05ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG813655575 or 813655575. Listed at 9 retailers as of November 6, 2026, with prices from $1,380 to $8,550, a $7,171 spread on the same certified stone. Do Amore Diamonds lists it at $8,550. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.3°
Pavilion angle32.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813655575
Dimensions10.12 × 7.40 × 4.91 mm
L/W Ratio1.37
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.12 mm7.40 mm3.05 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813655575
Side View
Table 62.0%Crown 30.3°Girdle: MED-THKPavilion 32.5°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: $8,550 NZD|Low: $1,194 NZD|High: $8,550 NZD|Avg: $2,991 NZD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6$1,194 NZD
Retailer 5$1,380 NZD
Retailer 8$1,582 NZD
Retailer 2$1,788 NZD
Retailer 3$2,042 NZD
Retailer 9$2,222 NZD
Retailer 7$2,953 NZD
Retailer 4$5,711 NZD
Do Amore Diamonds$8,550 NZD

36 data points across 9 retailers

9 retailers$1,380 NZD to $8,550 NZD

Retailer 1
-
$1,194 NZD
Price last confirmed 21 days ago
A
Retailer 2
-
$1,380 NZD
View
B+
Retailer 3
-
$1,582 NZD
View
A
Retailer 4
-
$1,788 NZD
View
A
Retailer 5
-
$2,042 NZD
View
B+
Retailer 6
-
$2,222 NZD
View
B+
Retailer 7
-
$2,953 NZD
View
B
Retailer 8
-
$5,711 NZD
View
Most Expensive
B
Do Amore Diamonds
27-7D1B39CDE · Nov 6
$8,550 NZD
$4,740 USD
View
8 more retailers have this diamond
Prices start from $1,380 NZDSave up to $7,171 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
$1,380 NZD