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Marquise|Lab Grown|IGI

4.05ct E VS1 Marquise Lab Grown Diamond

EX • E/VS1 • IGI LG818682405

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818682405

Diamond specifications and retailer prices

From $915 SGD
$716 USD
As of October 30, 2026
Save $3,275 SGD (78%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $4,883 SGD at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 4.05ct lab-grown marquise diamond

This 4.05ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818682405 or 818682405. Listed at 23 retailers as of October 29, 2026, with a 358% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.05
Carat
E
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.1°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818682405
Dimensions17.19 × 8.39 × 4.98 mm
L/W Ratio2.05
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.19 mm8.39 mm4.05 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818682405
Side View
Table 61.0%Crown 31.1°Girdle: MED-STKPavilion 40°Culet: NoneDepth 59.4%

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: $4,883 SGD|Low: $886 SGD|High: $4,883 SGD|Avg: $2,353 SGD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
October 31, 2026
Retailer 8$915 SGD
Retailer 15$918 SGD
Retailer 5$996 SGD
Retailer 11$1,024 SGD
Retailer 3$1,061 SGD
Retailer 21$1,285 SGD
Retailer 18$1,593 SGD
Retailer 16$1,702 SGD
Retailer 20$1,723 SGD
Retailer 19$2,259 SGD
Retailer 13$2,274 SGD
Retailer 6$2,300 SGD
Retailer 2$2,410 SGD
Retailer 4$2,984 SGD
Retailer 10$3,293 SGD
Retailer 9$3,576 SGD
Retailer 12$3,659 SGD
Retailer 7$3,822 SGD
Retailer 14$4,077 SGD
Retailer 17$4,190 SGD
Rare Carat$4,883 SGD

27 data points across 21 retailers

23 retailers$915 SGD to $4,190 SGD

A
Cheapest Retailer
-
$915 SGD
$716 USD
A
Retailer 2
-
$918 SGD
£566 GBP
View
A
Retailer 3
-
$996 SGD
$779 USD
View
A
Retailer 4
-
$1,024 SGD
$801 USD
View
Final sale: no returns
A
Retailer 5
-
$1,061 SGD
$830 USD
View
Retailer 6
-
$1,070 SGD
$837 USD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$1,285 SGD
$1,005 USD
View
A
Retailer 8
-
$1,593 SGD
$1,246 USD
View
A
Retailer 9
-
$1,702 SGD
£1,048 GBP
View
A
Retailer 10
-
$1,723 SGD
$1,348 USD
View
A
Retailer 11
-
$2,259 SGD
ZAR 28,547 ZAR
View
A
Retailer 12
-
$2,274 SGD
A$2,737 AUD
View
A
Retailer 13
-
$2,300 SGD
$1,799 USD
View
A
Retailer 14
-
$2,410 SGD
$1,885 USD
View
B+
Retailer 15
-
$2,984 SGD
$2,334 USD
View
B+
Retailer 16
-
$3,293 SGD
£2,028 GBP
View
B+
Retailer 17
-
$3,576 SGD
View
B+
Retailer 18
-
$3,619 SGD
$2,831 USD
View
B+
Retailer 19
-
$3,659 SGD
$2,862 USD
View
B+
Retailer 20
-
$3,822 SGD
$2,990 USD
View
Retailer 21
-
$4,077 SGD
A$4,906 AUD
View
Price last confirmed 22 days ago
B
Retailer 22
-
$4,190 SGD
£2,581 GBP
View
Most Expensive
Rare Carat
PR-12609 · Oct 18
$4,883 SGD
$3,820 USD
View
Price last confirmed 12 days ago
22 more retailers have this diamond
Prices start from $915 SGDSave up to $3,275 SGD

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 Marquise
$915 SGD