Marquise|Lab Grown|IGI

1.05ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG819621009

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG819621009

Diamond specifications and retailer prices

From $255 USD
As of October 30, 2026
Save $1,575 USD (86%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,830 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.05ct lab-grown marquise diamond

This 1.05ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG819621009 or 819621009. Listed at 20 retailers as of October 28, 2026, with prices from $255 to $1,830, a $1,575 spread on the same certified stone. Brilliant Earth lists it at $1,830. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG819621009
Dimensions10.44 × 5.25 × 3.33 mm
L/W Ratio1.99
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.44 mm5.25 mm1.05 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG819621009
Side View
Table 60.0%Crown 35.1°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.4%

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: Oct 30
Current: $1,830 USD|Low: $244 USD|High: $1,830 USD|Avg: $645 USD|+1.7%
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 30, 2026
Retailer 13$255 USD
Retailer 12$284 USD
Retailer 3$316 USD
Retailer 4$438 USD
Retailer 10$475 USD
Retailer 6$532 USD
Retailer 9$543 USD
Retailer 2$602 USD
Retailer 5$636 USD
Retailer 8$768 USD
Retailer 11$824 USD
Retailer 7$1,273 USD
Brilliant Earth$1,830 USD

43 data points across 13 retailers

20 retailers$255 USD to $1,830 USD

A
Cheapest Retailer
-
$255 USD
A
Retailer 2
-
$284 USD
View
Final sale: no returns
A
Retailer 3
-
$295 USD
View
A
Retailer 4
-
$316 USD
View
A
Retailer 5
-
$316 USD
View
A
Retailer 6
-
$438 USD
View
A
Retailer 7
-
$475 USD
View
A
Retailer 8
-
$532 USD
€507 EUR
View
A
Retailer 9
-
$543 USD
ZAR 8,766 ZAR
View
A
Retailer 10
-
$602 USD
£474 GBP
View
A
Retailer 11
-
$619 USD
View
A
Retailer 12
-
$636 USD
View
B+
Retailer 13
-
$768 USD
A$1,182 AUD
View
B+
Retailer 14
-
$824 USD
View
B+
Retailer 15
-
$872 USD
SGD 1,179 SGD
View
Retailer 16
-
$970 USD
View
Price last confirmed 14 days ago
B+
Retailer 17
-
$1,015 USD
View
B+
Retailer 18
-
$1,067 USD
View
B+
Retailer 19
-
$1,273 USD
£1,002 GBP
View
Most Expensive
B
Brilliant Earth
20714959A · Oct 28
$1,830 USD
View
19 more retailers have this diamond
Prices start from $255 USDSave up to $1,575 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
1.05ct Marquise
$255 USD