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Marquise|Lab Grown|IGI

1.51ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG567351529

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG567351529

Diamond specifications and retailer prices

From £198 GBP
$265 USD
As of October 30, 2026
Save £786 GBP (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £984 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown marquise diamond

This 1.51ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG567351529 or 567351529. Listed at 18 retailers as of October 30, 2026, with prices from £198 to £984, a £786 spread on the same certified stone. MOH London lists it at £984. 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

1.51
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG567351529
Dimensions11.69 × 6.00 × 3.81 mm
L/W Ratio1.95
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
11.69 mm6.00 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG567351529
Side View
Table 58.0%Crown 36.4°Girdle: MediumPavilion 40.5°Culet: NoneDepth 63.5%

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 30
Current: £984 GBP|Low: £198 GBP|High: £1,366 GBP|Avg: £558 GBP|-27.9%
MOH London
Retailer 2
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 18
November 2, 2026
Retailer 15£198 GBP
Retailer 13£230 GBP
Retailer 3£232 GBP
Retailer 14£246 GBP
Retailer 5£287 GBP
Retailer 4£347 GBP
Retailer 11£366 GBP
Retailer 7£384 GBP
Retailer 12£408 GBP
Retailer 18£441 GBP
Retailer 2£466 GBP
Retailer 8£545 GBP
Retailer 17£754 GBP
Retailer 16£789 GBP
Retailer 9£829 GBP
Retailer 10£851 GBP
Retailer 6£978 GBP
MOH London£984 GBP

42 data points across 18 retailers

18 retailers£198 GBP to £984 GBP

A
Cheapest Retailer
-
£198 GBP
$265 USD
A
Retailer 2
-
£230 GBP
$308 USD
View
A
Retailer 3
-
£232 GBP
$311 USD
View
Final sale: no returns
A
Retailer 4
-
£246 GBP
$329 USD
View
A
Retailer 5
-
£287 GBP
HK$3,000 HKD
View
A
Retailer 6
-
£347 GBP
$465 USD
View
A
Retailer 7
-
£366 GBP
$490 USD
View
A
Retailer 8
-
£384 GBP
$515 USD
View
A
Retailer 9
-
£408 GBP
€521 EUR
View
B+
Retailer 10
-
£441 GBP
$591 USD
View
Retailer 11
-
£458 GBP
View
Price last confirmed 17 days ago
B+
Retailer 12
-
£466 GBP
View
Retailer 13
-
£545 GBP
$731 USD
View
Price last confirmed 9 days ago
B
Retailer 14
-
£754 GBP
$1,010 USD
View
B
Retailer 15
-
£789 GBP
$1,057 USD
View
B
Retailer 16
-
£829 GBP
SGD 1,501 SGD
View
B
Retailer 17
-
£978 GBP
$1,310 USD
View
Most Expensive
B
MOH London
LG567351529 · Nov 1
£984 GBP
View
17 more retailers have this diamond
Prices start from £198 GBPSave up to £786 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
1.51ct Marquise
£198 GBP