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Marquise|Lab Grown|IGI

1.00ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG780663738

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG780663738

Diamond specifications and retailer prices

From $397 USD
HK$3,100 HKD
As of October 28, 2026
Save $1,693 USD (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,090 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1ct lab-grown marquise diamond

This 1ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780663738 or 780663738. Listed at 13 retailers as of October 28, 2026, with prices from $397 to $2,090, a $1,693 spread on the same certified stone. Brilliant Earth lists it at $2,090. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
E
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780663738
Dimensions10.57 × 5.06 × 3.17 mm
L/W Ratio2.09
Girdle conditionFaceted
Culet sizePointed
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
10.57 mm5.06 mm1.00 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780663738
Side View
Table 63.0%Crown 34.5°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 62.6%

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 28
Current: $2,090 USD|Low: $397 USD|High: $2,104 USD|Avg: $1,000 USD
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
October 29, 2026
Retailer 9$397 USD
Retailer 4$400 USD
Retailer 13$432 USD
Retailer 2$476 USD
Retailer 8$487 USD
Retailer 11$492 USD
Retailer 7$527 USD
Retailer 12$616 USD
Retailer 3$1,083 USD
Retailer 6$1,142 USD
Retailer 5$1,331 USD
Retailer 10$1,940 USD
Brilliant Earth$2,090 USD

42 data points across 13 retailers

13 retailers$397 USD to $2,090 USD

A
Cheapest Retailer
-
$397 USD
HK$3,100 HKD
A
Retailer 2
-
$400 USD
View
A
Retailer 3
-
$432 USD
View
A
Retailer 4
-
$476 USD
€453 EUR
View
A
Retailer 5
-
$487 USD
ZAR 7,866 ZAR
View
A
Retailer 6
-
$492 USD
View
A
Retailer 7
-
$527 USD
£415 GBP
View
A
Retailer 8
-
$616 USD
View
B+
Retailer 9
-
$1,083 USD
View
B+
Retailer 10
-
$1,142 USD
£899 GBP
View
B
Retailer 11
-
$1,331 USD
View
B
Retailer 12
-
$1,940 USD
View
Most Expensive
B
Brilliant Earth
20870115Y · Oct 28
$2,090 USD
View
12 more retailers have this diamond
Prices start from $397 USDSave up to $1,693 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
1.00ct Marquise
$397 USD