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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 £572 GBP
As of November 6, 2026
Save £2,970 GBP (84%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,541 GBP 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 £572 to £3,541, a £2,970 spread on the same certified stone. Do Amore Diamonds lists it at £3,541. 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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Price History

Last verified: Nov 6
Current: £3,541 GBP|Low: £495 GBP|High: £3,541 GBP|Avg: £1,239 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6£495 GBP
Retailer 5£572 GBP
Retailer 8£655 GBP
Retailer 2£740 GBP
Retailer 3£846 GBP
Retailer 9£920 GBP
Retailer 7£1,223 GBP
Retailer 4£2,365 GBP
Do Amore Diamonds£3,541 GBP

36 data points across 9 retailers

9 retailers£572 GBP to £3,541 GBP

Retailer 1
-
£495 GBP
Price last confirmed 22 days ago
A
Retailer 2
-
£572 GBP
View
B+
Retailer 3
-
£655 GBP
View
A
Retailer 4
-
£740 GBP
View
A
Retailer 5
-
£846 GBP
View
B+
Retailer 6
-
£920 GBP
View
B+
Retailer 7
-
£1,223 GBP
View
B
Retailer 8
-
£2,365 GBP
View
Most Expensive
B
Do Amore Diamonds
27-7D1B39CDE · Nov 6
£3,541 GBP
$4,740 USD
View
8 more retailers have this diamond
Prices start from £572 GBPSave up to £2,970 GBP

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
£572 GBP