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Marquise|Lab Grown|IGI

2.54ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG817661438

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG817661438

Diamond specifications and retailer prices

From £1,251 GBP
$1,676 USD
As of October 30, 2026
Save £3,843 GBP (75%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £5,093 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 2.54ct lab-grown marquise diamond

This 2.54ct lab-grown marquise sits in the two to three carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG817661438 or 817661438. Listed at 19 retailers as of October 30, 2026, with prices from £1,251 to £5,093, a £3,843 spread on the same certified stone. Taylor and Hart lists it at £5,093. 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

2.54
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817661438
Dimensions14.21 × 7.09 × 4.50 mm
L/W Ratio2.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.21 mm7.09 mm2.54 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817661438
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 63.5%

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: Oct 30
Current: £3,445 GBP|Low: £1,251 GBP|High: £5,425 GBP|Avg: £2,625 GBP|-0.2%
Retailer 1
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
Taylor and Hart
November 1, 2026
Retailer 8£1,251 GBP
Retailer 13£1,361 GBP
Retailer 3£1,401 GBP
Retailer 6£1,452 GBP
Retailer 12£1,578 GBP
Retailer 14£1,638 GBP
Retailer 9£2,057 GBP
Retailer 2£2,096 GBP
Retailer 15£2,280 GBP
Retailer 16£2,502 GBP
Retailer 5£2,720 GBP
Retailer 7£3,003 GBP
Retailer 1£3,445 GBP
Retailer 10£3,745 GBP
Retailer 4£3,911 GBP
Retailer 11£4,168 GBP
Taylor and Hart£5,093 GBP

34 data points across 17 retailers

19 retailers£1,251 GBP to £5,093 GBP

A+
Cheapest Retailer
-
£1,251 GBP
$1,676 USD
A
Retailer 2
-
£1,361 GBP
$1,824 USD
View
A
Retailer 3
-
£1,401 GBP
$1,877 USD
View
Final sale: no returns
A
Retailer 4
-
£1,452 GBP
$1,945 USD
View
Retailer 5
-
£1,518 GBP
$2,034 USD
View
Price last confirmed 20 days ago
A
Retailer 6
-
£1,578 GBP
$2,115 USD
View
A
Retailer 7
-
£1,638 GBP
$2,195 USD
View
A
Retailer 8
-
£2,057 GBP
View
A
Retailer 9
-
£2,096 GBP
$2,809 USD
View
A
Retailer 10
-
£2,280 GBP
$3,055 USD
View
A
Retailer 11
-
£2,502 GBP
$3,353 USD
View
A
Retailer 12
-
£2,720 GBP
$3,645 USD
View
A
Retailer 13
-
£3,003 GBP
View
Retailer 14
-
£3,423 GBP
$4,586 USD
View
Price last confirmed 104 days ago
B+
Retailer 15
-
£3,445 GBP
A$7,102 AUD
View
B+
Retailer 16
-
£3,745 GBP
ZAR 81,058 ZAR
View
B+
Retailer 17
-
£3,911 GBP
$5,240 USD
View
B+
Retailer 18
-
£4,168 GBP
View
Most Expensive
B+
Taylor and Hart
296ETUU · Oct 31
£5,093 GBP
$6,825 USD
View
18 more retailers have this diamond
Prices start from £1,251 GBPSave up to £3,843 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+
2.54ct Marquise
£1,251 GBP