Marquise|Lab Grown|IGI

1.05ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG818645863

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818645863

Diamond specifications and retailer prices

From $215 USD
As of October 30, 2026
Save $1,235 USD (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,450 USD at Brilliant Earth · As of October 30, 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 LG818645863 or 818645863. Listed at 22 retailers as of October 30, 2026, with prices from $215 to $1,450, a $1,235 spread on the same certified stone. Brilliant Earth lists it at $1,450. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818645863
Dimensions9.93 × 5.34 × 3.35 mm
L/W Ratio1.86
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
9.93 mm5.34 mm1.05 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818645863
Side View
Table 57.0%Crown 35.7°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 62.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $1,450 USD|Low: $214 USD|High: $1,780 USD|Avg: $698 USD|-18.5%
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 31, 2026
Retailer 5$215 USD
Retailer 6$241 USD
Retailer 14$267 USD
Retailer 17$267 USD
Retailer 7$360 USD
Retailer 11$458 USD
Retailer 16$466 USD
Retailer 10$494 USD
Retailer 3$604 USD
Retailer 9$605 USD
Retailer 12$652 USD
Retailer 2$652 USD
Retailer 15$857 USD
Retailer 4$910 USD
Retailer 13$1,071 USD
Retailer 8$1,242 USD
Brilliant Earth$1,450 USD

41 data points across 17 retailers

22 retailers$215 USD to $1,450 USD

A
Cheapest Retailer
-
$215 USD
Retailer 2
-
$223 USD
View
Price last confirmed 22 days ago
A
Retailer 3
-
$241 USD
View
Final sale: no returns
Retailer 4
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$259 USD
View
Price last confirmed 32 days ago
A
Retailer 5
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$267 USD
View
A
Retailer 6
-
$267 USD
View
Retailer 7
-
$273 USD
View
Price last confirmed 35 days ago
Retailer 8
-
$277 USD
View
Price last confirmed 27 days ago
Retailer 9
-
$320 USD
HK$2,500 HKD
View
Price last confirmed 56 days ago
A
Retailer 10
-
$360 USD
View
A
Retailer 11
-
$458 USD
ZAR 7,401 ZAR
View
A
Retailer 12
-
$466 USD
€444 EUR
View
A
Retailer 13
-
$494 USD
£389 GBP
View
A
Retailer 14
-
$604 USD
View
B+
Retailer 15
-
$652 USD
A$1,003 AUD
View
B+
Retailer 16
-
$652 USD
View
B+
Retailer 17
-
$857 USD
View
Retailer 18
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$889 USD
View
Price last confirmed 30 days ago
B+
Retailer 19
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$910 USD
View
B+
Retailer 20
-
$1,071 USD
£843 GBP
View
B
Retailer 21
-
$1,242 USD
View
Most Expensive
B
Brilliant Earth
20960580A · Oct 30
$1,450 USD
View
21 more retailers have this diamond
Prices start from $215 USDSave up to $1,235 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
$215 USD