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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 $765 USD
As of October 29, 2026
Save $3,975 USD (84%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $4,740 USD at Do Amore Diamonds · As of October 29, 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 October 29, 2026, with prices from $765 to $4,740, a $3,975 spread on the same certified stone. Do Amore Diamonds lists it at $4,740. 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
Color
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: Oct 29
Current: $4,740 USD|Low: $662 USD|High: $4,740 USD|Avg: $1,450 USD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 8$662 USD
Retailer 4$678 USD
Retailer 7$765 USD
Retailer 10$877 USD
Retailer 12$926 USD
Retailer 2$1,000 USD
Retailer 3$1,128 USD
Retailer 5$1,143 USD
Retailer 11$1,232 USD
Retailer 9$1,637 USD
Retailer 6$3,192 USD
Do Amore Diamonds$4,740 USD

29 data points across 12 retailers

9 retailers$765 USD to $4,740 USD

Retailer 1
-
$662 USD
Price last confirmed 15 days ago
A
Retailer 2
-
$765 USD
View
B+
Retailer 3
-
$877 USD
View
A
Retailer 4
-
$1,000 USD
£787 GBP
View
A
Retailer 5
-
$1,143 USD
£900 GBP
View
B+
Retailer 6
-
$1,232 USD
View
B+
Retailer 7
-
$1,637 USD
View
B
Retailer 8
-
$3,192 USD
£2,513 GBP
View
Most Expensive
B
Do Amore Diamonds
27-7D1B39CDE · Oct 29
$4,740 USD
View
8 more retailers have this diamond
Prices start from $765 USDSave up to $3,975 USD

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
$765 USD