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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 $1,412 SGD
$1,104 USD
As of November 1, 2026
Save $7,771 SGD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,183 SGD 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 $1,412 to $9,183, a $7,771 spread on the same certified stone. Brilliant Earth lists it at $9,183. 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
Colour
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

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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: Nov 1
Current: $9,183 SGD|Low: $1,412 SGD|High: $9,195 SGD|Avg: $3,706 SGD|-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$1,412 SGD
Retailer 2$1,654 SGD
Retailer 6$1,688 SGD
Retailer 4$2,095 SGD
Retailer 17$2,220 SGD
Retailer 11$2,257 SGD
Retailer 7$2,791 SGD
Retailer 18$3,152 SGD
Retailer 14$3,473 SGD
Retailer 16$3,774 SGD
Retailer 9$4,035 SGD
Retailer 13$4,536 SGD
Retailer 12$4,962 SGD
Retailer 8$5,098 SGD
Retailer 5$5,275 SGD
Retailer 15$5,569 SGD
Retailer 10$5,653 SGD
Brilliant Earth$9,183 SGD

24 data points across 18 retailers

19 retailers$1,412 SGD to $9,183 SGD

A
Cheapest Retailer
-
$1,412 SGD
$1,104 USD
Final sale: no returns
A
Retailer 2
-
$1,654 SGD
£1,018 GBP
View
A
Retailer 3
-
$1,688 SGD
$1,320 USD
View
A
Retailer 4
-
$2,095 SGD
$1,638 USD
View
A
Retailer 5
-
$2,220 SGD
€1,653 EUR
View
A
Retailer 6
-
$2,257 SGD
£1,390 GBP
View
A
Retailer 7
-
$2,791 SGD
$2,182 USD
View
A
Retailer 8
-
$3,152 SGD
$2,465 USD
View
A
Retailer 9
-
$3,473 SGD
A$4,178 AUD
View
A
Retailer 10
-
$3,774 SGD
ZAR 47,676 ZAR
View
B+
Retailer 11
-
$4,035 SGD
£2,484 GBP
View
B+
Retailer 12
-
$4,536 SGD
$3,547 USD
View
B+
Retailer 13
-
$4,962 SGD
£3,055 GBP
View
B+
Retailer 14
-
$5,098 SGD
$3,986 USD
View
B+
Retailer 15
-
$5,275 SGD
$4,125 USD
View
B+
Retailer 16
-
$5,569 SGD
A$6,699 AUD
View
B
Retailer 17
-
$5,653 SGD
View
Retailer 18
-
$6,402 SGD
$5,006 USD
View
Price last confirmed 21 days ago
Most Expensive
B
Brilliant Earth
21558666A · Nov 2
$9,183 SGD
$7,180 USD
View
18 more retailers have this diamond
Prices start from $1,412 SGDSave up to $7,771 SGD

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
$1,412 SGD