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Marquise|Lab Grown|IGI

2.56ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG842621091

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG842621091

Diamond specifications and retailer prices

From £1,701 GBP
$2,279 USD
As of October 31, 2026
Save £8,292 GBP (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £9,993 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 LG842621091 or 842621091. Listed at 11 retailers as of October 31, 2026, with prices from £1,701 to £9,993, a £8,292 spread on the same certified stone. Do Amore Diamonds lists it at £9,993. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842621091
Dimensions13.55 × 7.22 × 4.49 mm
L/W Ratio1.88
Girdle conditionFaceted
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
13.55 mm7.22 mm2.56 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842621091
Side View
Table 57.0%Crown 36.1°Girdle: MED-STKPavilion 38.3°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
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 31
Current: £9,993 GBP|Low: £1,317 GBP|High: £10,217 GBP|Avg: £3,427 GBP|+32.2%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 11£1,701 GBP
Retailer 9£1,810 GBP
Retailer 7£2,638 GBP
Retailer 8£2,767 GBP
Retailer 6£3,014 GBP
Retailer 2£3,164 GBP
Retailer 3£4,224 GBP
Retailer 4£4,415 GBP
Retailer 10£5,044 GBP
Retailer 5£7,476 GBP
Do Amore Diamonds£9,993 GBP

15 data points across 11 retailers

11 retailers£1,701 GBP to £9,993 GBP

A
Cheapest Retailer
-
£1,701 GBP
$2,279 USD
A
Retailer 2
-
£1,810 GBP
$2,425 USD
View
A
Retailer 3
-
£2,638 GBP
$3,535 USD
View
A
Retailer 4
-
£2,767 GBP
$3,707 USD
View
B+
Retailer 5
-
£3,014 GBP
€3,846 EUR
View
A
Retailer 6
-
£3,164 GBP
$4,240 USD
View
B+
Retailer 7
-
£4,224 GBP
$5,660 USD
View
B+
Retailer 8
-
£4,415 GBP
A$9,100 AUD
View
Retailer 9
-
£5,044 GBP
$6,758 USD
View
Price last confirmed 8 days ago
B
Retailer 10
-
£7,476 GBP
A$15,411 AUD
View
Most Expensive
B
Do Amore Diamonds
27-BB0C4198E · Oct 31
£9,993 GBP
$13,390 USD
View
10 more retailers have this diamond
Prices start from £1,701 GBPSave up to £8,292 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
£1,701 GBP