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Princess|Lab Grown|IGI

2.57ct D FL Princess Lab Grown Diamond

ID • D/FL • IGI LG780661909

Shape and cutting style on the report: Princess cut

Certificate IGI LG780661909

Diamond specifications and retailer prices

From £1,079 GBP
$1,446 USD
As of October 30, 2026
Save £6,347 GBP (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £7,426 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 2.57ct lab-grown princess diamond

This 2.57ct lab-grown princess sits in the two to three carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780661909 or 780661909. Listed at 16 retailers as of October 30, 2026, with prices from £1,079 to £7,426, a £6,347 spread on the same certified stone. Do Amore Diamonds lists it at £7,426. 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

2.57
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.4°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780661909
Dimensions7.34 × 7.29 × 5.36 mm
L/W Ratio1.01
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
7.34 mm7.29 mm2.57 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780661909
Side View
Table 70.0%Crown 43.4°Girdle: STK-THKPavilion 38.6°Culet: NoneDepth 73.5%

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 30
Current: £7,426 GBP|Low: £1,079 GBP|High: £11,702 GBP|Avg: £3,203 GBP|-36.5%
Do Amore Diamonds
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
November 1, 2026
Retailer 13£1,079 GBP
Retailer 10£1,174 GBP
Retailer 12£1,331 GBP
Retailer 14£1,634 GBP
Retailer 9£1,642 GBP
Retailer 8£1,975 GBP
Retailer 11£2,272 GBP
Retailer 15£2,306 GBP
Retailer 4£2,590 GBP
Retailer 5£3,120 GBP
Retailer 3£3,483 GBP
Retailer 2£3,946 GBP
Retailer 7£4,448 GBP
Retailer 6£4,838 GBP
Do Amore Diamonds£7,426 GBP

35 data points across 15 retailers

16 retailers£1,079 GBP to £7,426 GBP

A
Cheapest Retailer
-
£1,079 GBP
$1,446 USD
A
Retailer 2
-
£1,174 GBP
$1,573 USD
View
A
Retailer 3
-
£1,331 GBP
$1,784 USD
View
A
Retailer 4
-
£1,634 GBP
$2,189 USD
View
A
Retailer 5
-
£1,642 GBP
$2,200 USD
View
A
Retailer 6
-
£1,975 GBP
$2,646 USD
View
A
Retailer 7
-
£2,011 GBP
$2,694 USD
View
Final sale: no returns
A
Retailer 8
-
£2,272 GBP
$3,044 USD
View
A
Retailer 9
-
£2,306 GBP
€2,943 EUR
View
A
Retailer 10
-
£2,590 GBP
$3,470 USD
View
B+
Retailer 11
-
£3,120 GBP
$4,180 USD
View
B+
Retailer 12
-
£3,483 GBP
$4,667 USD
View
B+
Retailer 13
-
£3,946 GBP
View
B+
Retailer 14
-
£4,448 GBP
$5,960 USD
View
B+
Retailer 15
-
£4,838 GBP
$6,483 USD
View
Most Expensive
B
Do Amore Diamonds
27-A584B1DBF · Oct 31
£7,426 GBP
$9,950 USD
View
15 more retailers have this diamond
Prices start from £1,079 GBPSave up to £6,347 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
2.57ct Princess
£1,079 GBP