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 HK$5,618 HKD
$716 USD
As of October 30, 2026
Save HK$20,100 HKD (78%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: HK$29,971 HKD 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

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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: Oct 30
Current: HK$29,971 HKD|Low: HK$5,437 HKD|High: HK$29,971 HKD|Avg: HK$14,379 HKD
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 30, 2026
Retailer 6HK$5,618 HKD
Retailer 2HK$5,636 HKD
Retailer 3HK$6,112 HKD
Retailer 10HK$6,284 HKD
Retailer 20HK$6,512 HKD
Retailer 19HK$7,885 HKD
Retailer 16HK$9,776 HKD
Retailer 13HK$10,445 HKD
Retailer 18HK$10,576 HKD
Retailer 17HK$13,864 HKD
Retailer 12HK$14,065 HKD
Retailer 4HK$14,114 HKD
Retailer 7HK$16,044 HKD
Retailer 21HK$18,312 HKD
Retailer 9HK$20,207 HKD
Retailer 8HK$21,946 HKD
Retailer 11HK$22,456 HKD
Retailer 5HK$23,459 HKD
Retailer 14HK$25,019 HKD
Retailer 15HK$25,717 HKD
Rare CaratHK$29,971 HKD

26 data points across 21 retailers

23 retailersHK$5,618 HKD to HK$25,717 HKD

A
Cheapest Retailer
-
HK$5,618 HKD
$716 USD
A
Retailer 2
-
HK$5,636 HKD
£566 GBP
View
A
Retailer 3
-
HK$6,112 HKD
$779 USD
View
A
Retailer 4
-
HK$6,284 HKD
$801 USD
View
Final sale: no returns
A
Retailer 5
-
HK$6,512 HKD
$830 USD
View
Retailer 6
-
HK$6,567 HKD
$837 USD
View
Price last confirmed 13 days ago
A
Retailer 7
-
HK$7,885 HKD
$1,005 USD
View
A
Retailer 8
-
HK$9,776 HKD
$1,246 USD
View
A
Retailer 9
-
HK$10,445 HKD
£1,048 GBP
View
A
Retailer 10
-
HK$10,576 HKD
$1,348 USD
View
A
Retailer 11
-
HK$13,864 HKD
ZAR 28,547 ZAR
View
Retailer 12
-
HK$14,065 HKD
A$2,758 AUD
View
Price last confirmed 9 days ago
A
Retailer 13
-
HK$14,114 HKD
$1,799 USD
View
B+
Retailer 14
-
HK$16,044 HKD
$2,045 USD
View
B+
Retailer 15
-
HK$18,312 HKD
$2,334 USD
View
B+
Retailer 16
-
HK$20,207 HKD
£2,028 GBP
View
B+
Retailer 17
-
HK$21,946 HKD
SGD 3,780 SGD
View
B+
Retailer 18
-
HK$22,211 HKD
$2,831 USD
View
B+
Retailer 19
-
HK$22,456 HKD
$2,862 USD
View
B+
Retailer 20
-
HK$23,459 HKD
$2,990 USD
View
Retailer 21
-
HK$25,019 HKD
A$4,906 AUD
View
Price last confirmed 22 days ago
B
Retailer 22
-
HK$25,717 HKD
£2,581 GBP
View
Most Expensive
Rare Carat
PR-12609 · Oct 18
HK$29,971 HKD
$3,820 USD
View
Price last confirmed 12 days ago
22 more retailers have this diamond
Prices start from HK$5,618 HKDSave up to HK$20,100 HKD

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
HK$5,618 HKD