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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 $1,962 NZD
$1,104 USD
As of November 1, 2026
Save $10,799 NZD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,761 NZD 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 $1,962 to $12,761, a $10,799 spread on the same certified stone. Brilliant Earth lists it at $12,761. 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

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: $12,761 NZD|Low: $1,962 NZD|High: $12,779 NZD|Avg: $5,150 NZD|-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$1,962 NZD
Retailer 2$2,298 NZD
Retailer 6$2,346 NZD
Retailer 4$2,911 NZD
Retailer 17$3,085 NZD
Retailer 11$3,137 NZD
Retailer 7$3,878 NZD
Retailer 18$4,381 NZD
Retailer 14$4,827 NZD
Retailer 16$5,245 NZD
Retailer 9$5,607 NZD
Retailer 13$6,304 NZD
Retailer 12$6,896 NZD
Retailer 8$7,084 NZD
Retailer 5$7,331 NZD
Retailer 15$7,739 NZD
Retailer 10$7,856 NZD
Brilliant Earth$12,761 NZD

24 data points across 18 retailers

19 retailers$1,962 NZD to $12,761 NZD

A
Cheapest Retailer
-
$1,962 NZD
$1,104 USD
Final sale: no returns
A
Retailer 2
-
$2,298 NZD
£1,018 GBP
View
A
Retailer 3
-
$2,346 NZD
$1,320 USD
View
A
Retailer 4
-
$2,911 NZD
$1,638 USD
View
A
Retailer 5
-
$3,085 NZD
€1,653 EUR
View
A
Retailer 6
-
$3,137 NZD
£1,390 GBP
View
A
Retailer 7
-
$3,878 NZD
$2,182 USD
View
A
Retailer 8
-
$4,381 NZD
$2,465 USD
View
A
Retailer 9
-
$4,827 NZD
A$4,178 AUD
View
A
Retailer 10
-
$5,245 NZD
ZAR 47,676 ZAR
View
B+
Retailer 11
-
$5,607 NZD
£2,484 GBP
View
B+
Retailer 12
-
$6,304 NZD
$3,547 USD
View
B+
Retailer 13
-
$6,896 NZD
£3,055 GBP
View
B+
Retailer 14
-
$7,084 NZD
$3,986 USD
View
B+
Retailer 15
-
$7,331 NZD
$4,125 USD
View
B+
Retailer 16
-
$7,739 NZD
A$6,699 AUD
View
B
Retailer 17
-
$7,856 NZD
SGD 5,973 SGD
View
Retailer 18
-
$8,897 NZD
$5,006 USD
View
Price last confirmed 20 days ago
Most Expensive
B
Brilliant Earth
21558666A · Nov 2
$12,761 NZD
$7,180 USD
View
18 more retailers have this diamond
Prices start from $1,962 NZDSave up to $10,799 NZD

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
$1,962 NZD