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Marquise|Lab Grown|IGI

2.56ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG771601086

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG771601086

Diamond specifications and retailer prices

From £3,052 GBP
$4,089 USD
As of October 31, 2026
Save £8,315 GBP (73%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £15,606 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 2.56ct lab-grown marquise diamond

This 2.56ct 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 LG771601086 or 771601086. Listed at 18 retailers as of October 31, 2026, with a 272% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.56
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771601086
Dimensions13.91 × 7.32 × 4.46 mm
L/W Ratio1.90
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
13.91 mm7.32 mm2.56 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771601086
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 60.7%

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 31
Current: £8,844 GBP|Low: £3,052 GBP|High: £23,353 GBP|Avg: £9,252 GBP
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
Retailer 17
Taylor and Hart
November 1, 2026
Retailer 7£3,052 GBP
Retailer 4£3,801 GBP
Retailer 6£3,967 GBP
Retailer 12£4,112 GBP
Retailer 17£5,029 GBP
Retailer 11£5,543 GBP
Retailer 15£5,663 GBP
Retailer 5£6,153 GBP
Retailer 2£7,407 GBP
Retailer 13£7,471 GBP
Retailer 1£8,844 GBP
Retailer 16£11,139 GBP
Retailer 10£11,212 GBP
Retailer 9£11,367 GBP
Retailer 3£14,163 GBP
Retailer 14£14,759 GBP
Taylor and Hart£15,606 GBP
Retailer 8£23,353 GBP

25 data points across 18 retailers

18 retailers£3,052 GBP to £11,367 GBP

A
Cheapest Retailer
-
£3,052 GBP
$4,089 USD
B+
Retailer 2
-
£3,801 GBP
$5,093 USD
View
Final sale: no returns
B+
Retailer 3
-
£3,967 GBP
$5,315 USD
View
B+
Retailer 4
-
£4,112 GBP
$5,510 USD
View
B+
Retailer 5
-
£5,029 GBP
$6,738 USD
View
B+
Retailer 6
-
£5,543 GBP
View
B+
Retailer 7
-
£5,663 GBP
$7,588 USD
View
B
Retailer 8
-
£6,153 GBP
View
B
Retailer 9
-
£7,407 GBP
$9,924 USD
View
B
Retailer 10
-
£7,471 GBP
$10,010 USD
View
B
Retailer 11
-
£8,844 GBP
View
Retailer 12
-
£11,139 GBP
$14,925 USD
View
Price last confirmed 8 days ago
B
Retailer 13
-
£11,212 GBP
ZAR 242,705 ZAR
View
B
Retailer 14
-
£11,367 GBP
$15,231 USD
View
Retailer 15
-
£14,163 GBP
$18,977 USD
View
Price under review
Retailer 16
-
£14,759 GBP
$19,776 USD
View
Price under review
Most Expensive
Taylor and Hart
JEUINXG · Oct 31
£15,606 GBP
$20,911 USD
View
Price under review
16 more retailers have this diamond
Prices start from £3,052 GBPSave up to £8,315 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
2.56ct Marquise
£3,052 GBP