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Cushion|Lab Grown|IGI

3.11ct H SI1 Cushion Lab Grown Diamond

VG • H/SI1 • IGI LG447069256

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG447069256

Diamond specifications and retailer prices

From $1,287 AUD
As of November 6, 2026
Save $5,205 AUD (80%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,491 AUD at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

About this 3.11ct lab-grown cushion diamond

This 3.11ct lab-grown cushion sits in the three to five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG447069256 or 447069256. Listed at 8 retailers as of November 6, 2026, with prices from $1,287 to $6,491, a $5,205 spread on the same certified stone. Do Amore Diamonds lists it at $6,491. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.11
Carat
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447069256
Dimensions8.37 × 8.31 × 5.75 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
8.37 mm8.31 mm3.11 ctH / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447069256
Side View
Table 62.0%Crown 34.3°Girdle: THK-VTKPavilion 40.3°Culet: NoneDepth 69.2%

Caratlytics Score

How it works →
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: $6,491 AUD|Low: $1,086 AUD|High: $6,491 AUD|Avg: $2,388 AUD|+28.5%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5$1,287 AUD
Retailer 3$1,288 AUD
Retailer 10$1,291 AUD
Retailer 4$1,409 AUD
Retailer 9$1,509 AUD
Retailer 8$2,093 AUD
Retailer 7$2,372 AUD
Retailer 6$3,404 AUD
Retailer 2$4,344 AUD
Do Amore Diamonds$6,491 AUD

8 data points across 10 retailers

8 retailers$1,287 AUD to $6,491 AUD

A
Cheapest Retailer
-
$1,287 AUD
B+
Retailer 2
-
$1,288 AUD
View
A
Retailer 3
-
$1,409 AUD
View
B+
Retailer 4
-
$2,093 AUD
View
Retailer 5
-
$2,372 AUD
View
Price last confirmed 16 days ago
B
Retailer 6
-
$3,404 AUD
View
B
Retailer 7
-
$4,344 AUD
View
Most Expensive
B
Do Amore Diamonds
27-19FC8B45B · Nov 6
$6,491 AUD
$4,460 USD
View
7 more retailers have this diamond
Prices start from $1,287 AUDSave up to $5,205 AUD

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
3.11ct Cushion
$1,287 AUD