Cushion|Lab Grown|IGI

4.05ct H VS1 Cushion Lab Grown Diamond

GD • H/VS1 • IGI LG840657039

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840657039

Diamond specifications and retailer prices

From $781 USD
HK$6,100 HKD
As of November 1, 2026
Save $4,499 USD (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $5,280 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4.05ct lab-grown cushion diamond

This 4.05ct lab-grown cushion sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG840657039 or 840657039. Listed at 18 retailers as of October 31, 2026, with prices from $781 to $5,280, a $4,499 spread on the same certified stone. Brilliant Earth lists it at $5,280. 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

4.05
Carat
H
Color
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle32.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840657039
Dimensions11.28 × 8.05 × 5.14 mm
L/W Ratio1.40
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.28 mm8.05 mm4.05 ctH / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840657039
Side View
Table 65.0%Crown 34°Girdle: MED-STKPavilion 32.5°Culet: NoneDepth 63.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,042 USD|Low: $647 USD|High: $3,193 USD|Avg: $1,700 USD|+0.4%
Retailer 1
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Retailer 3
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Retailer 7
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Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
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Retailer 18
October 31, 2026
Retailer 4$654 USD
Retailer 12$781 USD
Retailer 10$800 USD
Retailer 15$835 USD
Retailer 18$1,038 USD
Retailer 1$1,042 USD
Retailer 16$1,113 USD
Retailer 2$1,273 USD
Retailer 5$1,429 USD
Retailer 7$1,448 USD
Retailer 11$1,620 USD
Retailer 6$2,103 USD
Retailer 8$2,175 USD
Retailer 14$2,268 USD
Retailer 17$2,307 USD
Retailer 3$2,346 USD
Retailer 9$3,129 USD
Retailer 13$3,158 USD

23 data points across 18 retailers

18 retailers$781 USD to $5,280 USD

A
Cheapest Retailer
-
$781 USD
HK$6,100 HKD
Retailer 2
-
$800 USD
£630 GBP
View
Price last confirmed 25 days ago
A
Retailer 3
-
$835 USD
View
B+
Retailer 4
-
$1,038 USD
View
A
Retailer 5
-
$1,042 USD
€992 EUR
View
B
Retailer 6
-
$1,113 USD
View
B+
Retailer 7
-
$1,273 USD
View
Retailer 8
-
$1,429 USD
ZAR 23,087 ZAR
View
Price last confirmed 9 days ago
Retailer 9
-
$1,448 USD
A$2,227 AUD
View
Price last confirmed 12 days ago
B+
Retailer 10
-
$1,620 USD
View
Retailer 11
-
$2,103 USD
£1,656 GBP
View
Price last confirmed 7 days ago
B+
Retailer 12
-
$2,175 USD
View
B+
Retailer 13
-
$2,268 USD
SGD 3,065 SGD
View
B+
Retailer 14
-
$2,307 USD
View
B+
Retailer 15
-
$2,346 USD
View
Retailer 16
-
$3,129 USD
£2,464 GBP
View
Price last confirmed 12 days ago
B
Retailer 17
-
$3,158 USD
View
Most Expensive
B
Brilliant Earth
21823092A · Oct 31
$5,280 USD
View
17 more retailers have this diamond
Prices start from $781 USDSave up to $4,499 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
4.05ct Cushion
$781 USD