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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 $884 USD
As of October 30, 2026
Save $3,576 USD (80%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,460 USD at Do Amore Diamonds · As of October 31, 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 October 30, 2026, with prices from $884 to $4,460, a $3,576 spread on the same certified stone. Do Amore Diamonds lists it at $4,460. 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
Color
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: Oct 30
Current: $4,460 USD|Low: $746 USD|High: $4,460 USD|Avg: $1,641 USD|+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$884 USD
Retailer 3$885 USD
Retailer 10$888 USD
Retailer 4$968 USD
Retailer 9$1,037 USD
Retailer 8$1,438 USD
Retailer 7$1,630 USD
Retailer 6$2,339 USD
Retailer 2$2,986 USD
Do Amore Diamonds$4,460 USD

8 data points across 10 retailers

8 retailers$884 USD to $4,460 USD

A
Cheapest Retailer
-
$884 USD
B+
Retailer 2
-
$885 USD
View
A
Retailer 3
-
$968 USD
View
B+
Retailer 4
-
$1,438 USD
View
Retailer 5
-
$1,630 USD
View
Price last confirmed 11 days ago
B
Retailer 6
-
$2,339 USD
View
B
Retailer 7
-
$2,986 USD
£2,351 GBP
View
Most Expensive
B
Do Amore Diamonds
27-19FC8B45B · Oct 31
$4,460 USD
View
7 more retailers have this diamond
Prices start from $884 USDSave up to $3,576 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
3.11ct Cushion
$884 USD