Marquise|Lab Grown|IGI

1.51ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG800679049

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG800679049

Diamond specifications and retailer prices

From $1,139 USD
HK$8,900 HKD
As of October 30, 2026
Save $2,431 USD (68%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,570 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.51ct lab-grown marquise diamond

This 1.51ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800679049 or 800679049. Listed at 12 retailers as of October 30, 2026, with prices from $1,139 to $3,570, a $2,431 spread on the same certified stone. Brilliant Earth lists it at $3,570. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800679049
Dimensions11.75 × 6.02 × 3.76 mm
L/W Ratio1.95
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
11.75 mm6.02 mm1.51 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800679049
Side View
Table 60.0%Crown 33.8°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $3,570 USD|Low: $1,139 USD|High: $4,616 USD|Avg: $2,598 USD|-10.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 7$1,139 USD
Retailer 9$1,188 USD
Retailer 10$1,410 USD
Retailer 2$1,427 USD
Retailer 4$1,498 USD
Retailer 6$1,806 USD
Retailer 8$2,392 USD
Retailer 3$3,227 USD
Retailer 5$3,515 USD
Retailer 11$3,532 USD
Brilliant Earth$3,570 USD

40 data points across 11 retailers

12 retailers$1,139 USD to $3,570 USD

A
Cheapest Retailer
-
$1,139 USD
HK$8,900 HKD
A
Retailer 2
-
$1,188 USD
View
A
Retailer 3
-
$1,410 USD
View
A
Retailer 4
-
$1,427 USD
£1,124 GBP
View
A
Retailer 5
-
$1,498 USD
€1,427 EUR
View
B+
Retailer 6
-
$1,806 USD
A$2,778 AUD
View
B+
Retailer 7
-
$2,392 USD
View
Retailer 8
-
$3,178 USD
View
Price last confirmed 88 days ago
B
Retailer 9
-
$3,227 USD
View
B
Retailer 10
-
$3,515 USD
£2,768 GBP
View
B
Retailer 11
-
$3,532 USD
View
Most Expensive
B
Brilliant Earth
20788411A · Oct 30
$3,570 USD
View
11 more retailers have this diamond
Prices start from $1,139 USDSave up to $2,431 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
1.51ct Marquise
$1,139 USD