CaratHunter
Plans
Marquise|Lab Grown|IGI

4.02ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG754561777

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754561777

Diamond specifications and retailer prices

From £4,704 GBP
$6,303 USD
As of October 31, 2026
Save £13,195 GBP (74%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £17,899 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.02ct lab-grown marquise diamond

This 4.02ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754561777 or 754561777. Listed at 6 retailers as of October 31, 2026, with prices from £4,704 to £17,899, a £13,195 spread on the same certified stone. Taylor and Hart lists it at £17,899. 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

4.02
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754561777
Dimensions17.14 × 7.84 × 5.07 mm
L/W Ratio2.19
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.14 mm7.84 mm4.02 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754561777
Side View
Table 58.0%Crown 38.5°Girdle: STK-THKPavilion 39.2°Culet: NoneDepth 64.7%

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: Oct 31
Current: £6,388 GBP|Low: £4,704 GBP|High: £17,899 GBP|Avg: £9,410 GBP|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Taylor and Hart
October 29, 2026
Retailer 4£4,704 GBP
Retailer 1£6,388 GBP
Retailer 5£7,899 GBP
Retailer 3£8,253 GBP
Retailer 2£10,469 GBP
Taylor and Hart£17,899 GBP

5 data points across 6 retailers

6 retailers£4,704 GBP to £17,899 GBP

A
Cheapest Retailer
-
£4,704 GBP
$6,303 USD
A
Retailer 2
-
£6,388 GBP
View
A
Retailer 3
-
£7,899 GBP
$10,584 USD
View
A
Retailer 4
-
£8,253 GBP
€10,532 EUR
View
Price last confirmed 7 days ago
B+
Retailer 5
-
£10,469 GBP
View
Most Expensive
B
Taylor and Hart
YLWBPSZ · Oct 31
£17,899 GBP
$23,983 USD
View
5 more retailers have this diamond
Prices start from £4,704 GBPSave up to £13,195 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
4.02ct Marquise
£4,704 GBP