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Marquise|Lab Grown|IGI

4.03ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG814643389

Shape and cutting style on the report: Hexagonal modified brilliant

Certificate IGI LG814643389

Diamond specifications and retailer prices

From £5,239 GBP
$7,020 USD
As of October 31, 2026
Save £24,069 GBP (82%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £29,308 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.03ct lab-grown marquise diamond

This 4.03ct 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 LG814643389 or 814643389. Listed at 8 retailers as of October 31, 2026, with prices from £5,239 to £29,308, a £24,069 spread on the same certified stone. Do Amore Diamonds lists it at £29,308. 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

4.03
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG814643389
Dimensions15.54 × 7.65 × 5.00 mm
L/W Ratio2.03
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.54 mm7.65 mm4.03 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG814643389
Side View
Table 66.0%Crown 35.9°Girdle: MED-THKPavilion 36.1°Culet: NoneDepth 65.4%

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: £29,308 GBP|Low: £2,881 GBP|High: £29,308 GBP|Avg: £8,864 GBP|+91.1%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 3£5,239 GBP
Retailer 6£5,503 GBP
Retailer 9£7,716 GBP
Retailer 8£7,783 GBP
Retailer 7£10,881 GBP
Retailer 2£14,446 GBP
Retailer 4£18,344 GBP
Retailer 5£19,888 GBP
Do Amore Diamonds£29,308 GBP

29 data points across 9 retailers

8 retailers£5,239 GBP to £29,308 GBP

A
Cheapest Retailer
-
£5,239 GBP
$7,020 USD
A
Retailer 2
-
£5,503 GBP
$7,374 USD
View
Final sale: no returns
Retailer 3
-
£7,783 GBP
$10,428 USD
View
Price last confirmed 17 days ago
Retailer 4
-
£10,881 GBP
View
Price last confirmed 17 days ago
B
Retailer 5
-
£14,446 GBP
$19,355 USD
View
B
Retailer 6
-
£18,344 GBP
View
B
Retailer 7
-
£19,888 GBP
$26,648 USD
View
Most Expensive
B
Do Amore Diamonds
20-E90949 · Oct 31
£29,308 GBP
$39,270 USD
View
7 more retailers have this diamond
Prices start from £5,239 GBPSave up to £24,069 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
4.03ct Marquise
£5,239 GBP