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Marquise|Lab Grown|IGI

1.54ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG677520629

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG677520629

Diamond specifications and retailer prices

From £426 GBP
As of November 4, 2026
Save £3,352 GBP (89%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,778 GBP at Do Amore Diamonds · As of November 3, 2026
View at Do Amore Diamonds

About this 1.54ct lab-grown marquise diamond

This 1.54ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG677520629 or 677520629. Listed at 19 retailers as of November 3, 2026, with prices from £426 to £3,778, a £3,352 spread on the same certified stone. Do Amore Diamonds lists it at £3,778. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG677520629
Dimensions11.70 × 6.11 × 3.75 mm
L/W Ratio1.91
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
11.70 mm6.11 mm1.54 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG677520629
Side View
Table 61.0%Crown 35.5°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
A+
Exceptional
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: Nov 4
Current: £3,778 GBP|Low: £417 GBP|High: £4,252 GBP|Avg: £1,371 GBP|-11.1%
Do Amore Diamonds
Retailer 2
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Retailer 19
November 4, 2026
Retailer 17£426 GBP
Retailer 6£477 GBP
Retailer 11£544 GBP
Retailer 13£611 GBP
Retailer 2£615 GBP
Retailer 19£620 GBP
Retailer 10£667 GBP
Retailer 18£813 GBP
Retailer 16£907 GBP
Retailer 7£990 GBP
Retailer 3£1,310 GBP
Retailer 14£1,357 GBP
Retailer 5£1,481 GBP
Retailer 4£1,533 GBP
Retailer 8£1,967 GBP
Retailer 15£2,037 GBP
Retailer 12£2,296 GBP
Retailer 9£2,605 GBP
Do Amore Diamonds£3,778 GBP

38 data points across 19 retailers

19 retailers£426 GBP to £3,778 GBP

A+
Cheapest Retailer
-
£426 GBP
A
Retailer 2
-
£477 GBP
View
A
Retailer 3
-
£544 GBP
View
Final sale: no returns
A
Retailer 4
-
£611 GBP
View
A
Retailer 5
-
£615 GBP
View
A
Retailer 6
-
£620 GBP
View
A
Retailer 7
-
£667 GBP
View
A
Retailer 8
-
£813 GBP
View
A
Retailer 9
-
£907 GBP
View
A
Retailer 10
-
£990 GBP
View
B+
Retailer 11
-
£1,310 GBP
View
B+
Retailer 12
-
£1,357 GBP
View
B+
Retailer 13
-
£1,481 GBP
View
B+
Retailer 14
-
£1,533 GBP
View
Retailer 15
-
£1,967 GBP
View
Price last confirmed 8 days ago
B+
Retailer 16
-
£2,037 GBP
View
B+
Retailer 17
-
£2,296 GBP
View
Retailer 18
-
£2,605 GBP
View
Price last confirmed 28 days ago
Most Expensive
B
Do Amore Diamonds
27-873573FCA · Nov 3
£3,778 GBP
$5,100 USD
View
18 more retailers have this diamond
Prices start from £426 GBPSave up to £3,352 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+
1.54ct Marquise
£426 GBP