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Marquise|Lab Grown|IGI

4.00ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG600351038

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG600351038

Diamond specifications and retailer prices

From £4,849 GBP
$6,497 USD
As of October 31, 2026
Save £19,664 GBP (80%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £24,513 GBP at Michael Trio · As of October 31, 2026
View at Michael Trio

About this 4ct lab-grown marquise diamond

This 4ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG600351038 or 600351038. Listed at 25 retailers as of October 31, 2026, with prices from £4,849 to £24,513, a £19,664 spread on the same certified stone. Michael Trio lists it at £24,513. 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

4.00
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG600351038
Dimensions16.20 × 8.33 × 5.18 mm
L/W Ratio1.94
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
16.20 mm8.33 mm4.00 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG600351038
Side View
Table 63.0%Crown 35.5°Girdle: Slightly ThickPavilion 40°Culet: NoneDepth 62.2%

Caratlytics Score

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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 31
Current: £24,513 GBP|Low: £4,332 GBP|High: £33,801 GBP|Avg: £11,544 GBP
Michael Trio
Retailer 2
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October 29, 2026
Retailer 11£4,849 GBP
Retailer 23£5,417 GBP
Retailer 7£5,572 GBP
Retailer 6£5,633 GBP
Retailer 8£6,066 GBP
Retailer 21£6,247 GBP
Retailer 4£6,283 GBP
Retailer 9£6,587 GBP
Retailer 18£6,995 GBP
Retailer 20£7,104 GBP
Retailer 10£7,203 GBP
Retailer 5£7,801 GBP
Retailer 13£8,532 GBP
Retailer 15£9,941 GBP
Retailer 3£10,381 GBP
Retailer 17£12,945 GBP
Retailer 2£14,763 GBP
Retailer 19£15,274 GBP
Retailer 22£16,136 GBP
Retailer 12£17,294 GBP
Retailer 14£22,539 GBP
Michael Trio£24,513 GBP
Retailer 16£33,801 GBP

34 data points across 23 retailers

25 retailers£4,849 GBP to £24,513 GBP

A
Cheapest Retailer
-
£4,849 GBP
$6,497 USD
A
Retailer 2
-
£5,417 GBP
$7,258 USD
View
A
Retailer 3
-
£5,572 GBP
$7,466 USD
View
A
Retailer 4
-
£5,633 GBP
$7,548 USD
View
A
Retailer 5
-
£6,066 GBP
$8,128 USD
View
Final sale: no returns
A
Retailer 6
-
£6,247 GBP
$8,370 USD
View
Retailer 7
-
£6,283 GBP
$8,419 USD
View
Price last confirmed 15 days ago
A
Retailer 8
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£6,283 GBP
$8,419 USD
View
Retailer 9
-
£6,587 GBP
View
Price last confirmed 22 days ago
A
Retailer 10
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£6,995 GBP
$9,373 USD
View
A
Retailer 11
-
£7,104 GBP
$9,519 USD
View
A
Retailer 12
-
£7,203 GBP
HK$75,400 HKD
View
A
Retailer 13
-
£7,801 GBP
$10,452 USD
View
A
Retailer 14
-
£8,532 GBP
View
B+
Retailer 15
-
£9,941 GBP
View
B+
Retailer 16
-
£10,381 GBP
$13,910 USD
View
B+
Retailer 17
-
£12,945 GBP
View
B+
Retailer 18
-
£14,763 GBP
ZAR 319,563 ZAR
View
Retailer 19
-
£15,274 GBP
A$31,486 AUD
View
Price last confirmed 9 days ago
B
Retailer 20
-
£16,092 GBP
$21,561 USD
View
B
Retailer 21
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£16,136 GBP
$21,620 USD
View
B
Retailer 22
-
£17,294 GBP
$23,172 USD
View
B
Retailer 23
-
£22,539 GBP
$30,199 USD
View
Most Expensive
B
Michael Trio
8520502180 · Oct 31
£24,513 GBP
SGD 44,385 SGD
View
23 more retailers have this diamond
Prices start from £4,849 GBPSave up to £19,664 GBP

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
4.00ct Marquise
£4,849 GBP