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Marquise|Lab Grown|IGI

1.53ct F SI1 Marquise Lab Grown Diamond

EX • F/SI1 • IGI LG809685426

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG809685426

Diamond specifications and retailer prices

From £283 GBP
€362 EUR
As of October 27, 2026
Save £984 GBP (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,267 GBP at Brilliant Earth · As of October 27, 2026
View at Brilliant Earth

About this 1.53ct lab-grown marquise diamond

This 1.53ct lab-grown marquise sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG809685426 or 809685426. Listed at 16 retailers as of October 27, 2026, with prices from £283 to £1,267, a £984 spread on the same certified stone. Brilliant Earth lists it at £1,267. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.53
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.7°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG809685426
Dimensions11.84 × 5.94 × 3.74 mm
L/W Ratio1.99
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.84 mm5.94 mm1.53 ctF / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG809685426
Side View
Table 64.0%Crown 36.7°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 63.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: £1,267 GBP|Low: £136 GBP|High: £1,304 GBP|Avg: £538 GBP|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 27, 2026
Retailer 11£146 GBP
Retailer 3£220 GBP
Retailer 6£282 GBP
Retailer 2£283 GBP
Retailer 4£291 GBP
Retailer 10£346 GBP
Retailer 8£396 GBP
Retailer 7£413 GBP
Retailer 12£563 GBP
Retailer 13£693 GBP
Retailer 5£718 GBP
Retailer 9£832 GBP
Brilliant Earth£1,267 GBP

32 data points across 13 retailers

16 retailers£283 GBP to £1,267 GBP

Retailer 1
-
£176 GBP
$236 USD
Price last confirmed 25 days ago
Retailer 2
-
£204 GBP
$274 USD
View
Price last confirmed 35 days ago
Retailer 3
-
£218 GBP
$293 USD
View
Price last confirmed 30 days ago
Retailer 4
-
£220 GBP
$295 USD
View
Price last confirmed 11 days ago
Retailer 5
-
£282 GBP
View
Price last confirmed 10 days ago
A
Retailer 6
-
£283 GBP
€362 EUR
View
Retailer 7
-
£291 GBP
View
Price last confirmed 18 days ago
Retailer 8
-
£346 GBP
$464 USD
View
Price last confirmed 10 days ago
Retailer 9
-
£396 GBP
$531 USD
View
Price last confirmed 11 days ago
Retailer 10
-
£413 GBP
$554 USD
View
Price last confirmed 9 days ago
Retailer 11
-
£563 GBP
$756 USD
View
Price last confirmed 10 days ago
Retailer 12
-
£693 GBP
$930 USD
View
Price last confirmed 15 days ago
Retailer 13
-
£700 GBP
$940 USD
View
Price last confirmed 33 days ago
Retailer 14
-
£718 GBP
View
Price last confirmed 19 days ago
Retailer 15
-
£832 GBP
$1,117 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
20610791A · Oct 27
£1,267 GBP
$1,700 USD
View
15 more retailers have this diamond
Prices start from £283 GBPSave up to £984 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
1.53ct Marquise
£283 GBP