Marquise|Lab Grown|IGI

4.00ct G VS1 Marquise Lab Grown Diamond

VG • G/VS1 • IGI LG828680375

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG828680375

Diamond specifications and retailer prices

From £693 GBP
$930 USD
As of October 26, 2026
Save £1,326 GBP (66%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,019 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 4ct lab-grown marquise diamond

This 4ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG828680375 or 828680375. Listed at 14 retailers as of October 26, 2026, with prices from £693 to £2,019, a £1,326 spread on the same certified stone. Rare Carat lists it at £2,019. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.00
Carat
G
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828680375
Dimensions16.26 × 8.34 × 4.92 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.26 mm8.34 mm4.00 ctG / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828680375
Side View
Table 59.0%Crown 33.4°Girdle: STK-THKPavilion 37.9°Culet: NoneDepth 59.0%

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 26
Current: £2,019 GBP|Low: £402 GBP|High: £2,038 GBP|Avg: £1,054 GBP|-0.9%
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
October 27, 2026
Retailer 16£402 GBP
Retailer 14£423 GBP
Retailer 15£548 GBP
Retailer 5£596 GBP
Retailer 7£693 GBP
Retailer 2£703 GBP
Retailer 10£727 GBP
Retailer 11£876 GBP
Retailer 12£896 GBP
Retailer 6£1,015 GBP
Retailer 13£1,195 GBP
Retailer 8£1,450 GBP
Retailer 3£1,485 GBP
Retailer 9£1,634 GBP
Retailer 4£1,663 GBP
Rare Carat£2,019 GBP

36 data points across 16 retailers

14 retailers£693 GBP to £2,019 GBP

Retailer 1
-
£548 GBP
$735 USD
Price last confirmed 6 days ago
Retailer 2
-
£596 GBP
$800 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
£693 GBP
$930 USD
View
A
Retailer 4
-
£703 GBP
€898 EUR
View
Retailer 5
-
£727 GBP
View
Price last confirmed 7 days ago
Retailer 6
-
£876 GBP
ZAR 18,999 ZAR
View
Price last confirmed 9 days ago
Retailer 7
-
£896 GBP
A$1,850 AUD
View
Price last confirmed 13 days ago
Retailer 8
-
£1,015 GBP
$1,362 USD
View
Price last confirmed 7 days ago
Retailer 9
-
£1,195 GBP
$1,603 USD
View
Price last confirmed 7 days ago
Retailer 10
-
£1,450 GBP
$1,945 USD
View
Price last confirmed 7 days ago
Retailer 11
-
£1,485 GBP
$1,993 USD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
£1,634 GBP
View
B+
Retailer 13
-
£1,663 GBP
$2,231 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Rare Carat
STE-STL-185-60 · Oct 28
£2,019 GBP
$2,710 USD
View
13 more retailers have this diamond
Prices start from £693 GBPSave up to £1,326 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
£693 GBP