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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 $1,104 USD
As of November 1, 2026
Save $6,076 USD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,180 USD at Brilliant Earth · As of October 31, 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 October 31, 2026, with prices from $1,104 to $7,180, a $6,076 spread on the same certified stone. Brilliant Earth lists it at $7,180. 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: $7,180 USD|Low: $1,104 USD|High: $7,190 USD|Avg: $2,898 USD|-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
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 3$1,104 USD
Retailer 2$1,293 USD
Retailer 6$1,320 USD
Retailer 4$1,638 USD
Retailer 17$1,736 USD
Retailer 11$1,765 USD
Retailer 7$2,182 USD
Retailer 18$2,465 USD
Retailer 14$2,716 USD
Retailer 16$2,951 USD
Retailer 9$3,155 USD
Retailer 13$3,547 USD
Retailer 12$3,880 USD
Retailer 8$3,986 USD
Retailer 5$4,125 USD
Retailer 15$4,354 USD
Retailer 10$4,420 USD
Brilliant Earth$7,180 USD

24 data points across 18 retailers

19 retailers$1,104 USD to $7,180 USD

A
Cheapest Retailer
-
$1,104 USD
Final sale: no returns
A
Retailer 2
-
$1,293 USD
£1,018 GBP
View
A
Retailer 3
-
$1,320 USD
View
A
Retailer 4
-
$1,638 USD
View
A
Retailer 5
-
$1,736 USD
€1,653 EUR
View
A
Retailer 6
-
$1,765 USD
£1,390 GBP
View
A
Retailer 7
-
$2,182 USD
View
A
Retailer 8
-
$2,465 USD
View
A
Retailer 9
-
$2,716 USD
A$4,178 AUD
View
A
Retailer 10
-
$2,951 USD
ZAR 47,676 ZAR
View
B+
Retailer 11
-
$3,155 USD
£2,484 GBP
View
B+
Retailer 12
-
$3,547 USD
View
B+
Retailer 13
-
$3,880 USD
£3,055 GBP
View
B+
Retailer 14
-
$3,986 USD
View
B+
Retailer 15
-
$4,125 USD
View
B+
Retailer 16
-
$4,354 USD
A$6,699 AUD
View
B
Retailer 17
-
$4,420 USD
SGD 5,973 SGD
View
Retailer 18
-
$5,006 USD
View
Price last confirmed 20 days ago
Most Expensive
B
Brilliant Earth
21558666A · Oct 31
$7,180 USD
View
18 more retailers have this diamond
Prices start from $1,104 USDSave up to $6,076 USD

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
$1,104 USD