Marquise|Lab Grown|IGI

1.57ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG812620141

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG812620141

Diamond specifications and retailer prices

From $700 USD
As of October 28, 2026
Save $2,640 USD (79%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,340 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.57ct lab-grown marquise diamond

This 1.57ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG812620141 or 812620141. Listed at 23 retailers as of October 28, 2026, with prices from $700 to $3,340, a $2,640 spread on the same certified stone. Brilliant Earth lists it at $3,340. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57
Carat
E
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812620141
Dimensions11.87 × 6.01 × 3.73 mm
L/W Ratio1.98
Girdle conditionFaceted
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
11.87 mm6.01 mm1.57 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812620141
Side View
Table 58.0%Crown 35°Girdle: STK-THKPavilion 39.2°Culet: NoneDepth 62.1%

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: Oct 28
Current: $3,340 USD|Low: $700 USD|High: $3,500 USD|Avg: $1,843 USD|-4.6%
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
October 29, 2026
Retailer 15$700 USD
Retailer 4$870 USD
Retailer 16$1,092 USD
Retailer 13$1,201 USD
Retailer 3$1,201 USD
Retailer 2$1,212 USD
Retailer 11$1,333 USD
Retailer 5$1,841 USD
Retailer 9$1,872 USD
Retailer 7$1,890 USD
Retailer 8$2,301 USD
Retailer 14$2,338 USD
Retailer 6$2,435 USD
Retailer 17$2,505 USD
Retailer 12$2,551 USD
Retailer 10$3,072 USD
Brilliant Earth$3,340 USD

37 data points across 17 retailers

23 retailers$700 USD to $3,340 USD

A
Retailer 1
-
$638 USD
Price last confirmed 21 days ago
A
Retailer 2
-
$694 USD
View
Price last confirmed 30 days ago
A
Retailer 3
-
$700 USD
View
Final sale: no returns
A
Retailer 4
-
$740 USD
View
Price last confirmed 26 days ago
A
Retailer 5
-
$740 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
$748 USD
View
Price last confirmed 34 days ago
A
Retailer 7
-
$870 USD
View
A
Retailer 8
-
$1,092 USD
View
A
Retailer 9
-
$1,201 USD
View
A
Retailer 10
-
$1,201 USD
€1,144 EUR
View
A
Retailer 11
-
$1,212 USD
£954 GBP
View
A
Retailer 12
-
$1,333 USD
ZAR 21,535 ZAR
View
B+
Retailer 13
-
$1,841 USD
A$2,833 AUD
View
Price last confirmed 8 days ago
B+
Retailer 14
-
$1,872 USD
View
B+
Retailer 15
-
$1,890 USD
View
B+
Retailer 16
-
$2,081 USD
View
Price last confirmed 29 days ago
B+
Retailer 17
-
$2,301 USD
£1,812 GBP
View
Price last confirmed 18 days ago
B+
Retailer 18
-
$2,338 USD
View
B+
Retailer 19
-
$2,435 USD
View
B+
Retailer 20
-
$2,505 USD
View
B+
Retailer 21
-
$2,551 USD
View
B
Retailer 22
-
$3,072 USD
£2,419 GBP
View
Most Expensive
B
Brilliant Earth
20893074A · Oct 28
$3,340 USD
View
22 more retailers have this diamond
Prices start from $700 USDSave up to $2,640 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
1.57ct Marquise
$700 USD