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Marquise|Lab Grown|IGI

2.57ct F IF Marquise Lab Grown Diamond

ID • F/IF • IGI LG837640757

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG837640757

Diamond specifications and retailer prices

From €984 EUR
$1,104 USD
As of November 1, 2026
Save €5,417 EUR (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €6,402 EUR at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 2.57ct lab-grown marquise diamond

This 2.57ct lab-grown marquise sits in the two to three carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG837640757 or 837640757. Listed at 19 retailers as of November 1, 2026, with prices from €984 to €6,402, a €5,417 spread on the same certified stone. Brilliant Earth lists it at €6,402. 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
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.1°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837640757
Dimensions15.09 × 7.01 × 4.20 mm
L/W Ratio2.15
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.09 mm7.01 mm2.57 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837640757
Side View
Table 61.0%Crown 38.1°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 59.9%

Caratlytics Score

How it works →
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: Nov 1
Current: €6,402 EUR|Low: €984 EUR|High: €6,410 EUR|Avg: €2,584 EUR|-0.1%
Brilliant Earth
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
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Retailer 17
Retailer 18
November 2, 2026
Retailer 3€984 EUR
Retailer 2€1,153 EUR
Retailer 6€1,177 EUR
Retailer 4€1,460 EUR
Retailer 17€1,547 EUR
Retailer 11€1,573 EUR
Retailer 7€1,945 EUR
Retailer 18€2,198 EUR
Retailer 14€2,421 EUR
Retailer 16€2,631 EUR
Retailer 9€2,813 EUR
Retailer 13€3,162 EUR
Retailer 12€3,459 EUR
Retailer 8€3,554 EUR
Retailer 5€3,678 EUR
Retailer 15€3,882 EUR
Retailer 10€3,941 EUR
Brilliant Earth€6,402 EUR

24 data points across 18 retailers

19 retailers€984 EUR to €6,402 EUR

A
Cheapest Retailer
-
€984 EUR
$1,104 USD
Final sale: no returns
A
Retailer 2
-
€1,153 EUR
£1,018 GBP
View
A
Retailer 3
-
€1,177 EUR
$1,320 USD
View
A
Retailer 4
-
€1,460 EUR
$1,638 USD
View
A
Retailer 5
-
€1,547 EUR
View
A
Retailer 6
-
€1,573 EUR
£1,390 GBP
View
A
Retailer 7
-
€1,945 EUR
$2,182 USD
View
A
Retailer 8
-
€2,198 EUR
$2,465 USD
View
A
Retailer 9
-
€2,421 EUR
A$4,178 AUD
View
A
Retailer 10
-
€2,631 EUR
ZAR 47,676 ZAR
View
B+
Retailer 11
-
€2,813 EUR
£2,484 GBP
View
B+
Retailer 12
-
€3,162 EUR
$3,547 USD
View
B+
Retailer 13
-
€3,459 EUR
£3,055 GBP
View
B+
Retailer 14
-
€3,554 EUR
$3,986 USD
View
B+
Retailer 15
-
€3,678 EUR
$4,125 USD
View
B+
Retailer 16
-
€3,882 EUR
A$6,699 AUD
View
B
Retailer 17
-
€3,941 EUR
SGD 5,973 SGD
View
Retailer 18
-
€4,463 EUR
$5,006 USD
View
Price last confirmed 20 days ago
Most Expensive
B
Brilliant Earth
21558666A · Nov 2
€6,402 EUR
$7,180 USD
View
18 more retailers have this diamond
Prices start from €984 EURSave up to €5,417 EUR

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 Marquise
€984 EUR