Marquise|Lab Grown|IGI

1.01ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG818663597

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818663597

Diamond specifications and retailer prices

From $248 USD
As of October 30, 2026
Save $1,099 USD (82%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,000 USD at Brilliant Earth · As of September 19, 2026
View at Brilliant Earth

About this 1.01ct lab-grown marquise diamond

This 1.01ct 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 LG818663597 or 818663597. Listed at 23 retailers as of October 30, 2026, with a 443% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.01
Carat
E
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818663597
Dimensions10.37 × 5.27 × 3.30 mm
L/W Ratio1.97
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.37 mm5.27 mm1.01 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818663597
Side View
Table 56.0%Crown 34.2°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 62.6%

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: $580 USD|Low: $238 USD|High: $1,347 USD|Avg: $609 USD|+2.5%
Retailer 1
Retailer 2
Retailer 3
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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
Retailer 18
October 31, 2026
Retailer 4$248 USD
Retailer 18$277 USD
Retailer 8$288 USD
Retailer 5$308 USD
Retailer 9$308 USD
Retailer 12$326 USD
Retailer 11$412 USD
Retailer 13$491 USD
Retailer 15$528 USD
Retailer 1$580 USD
Retailer 6$603 USD
Retailer 10$612 USD
Retailer 16$749 USD
Retailer 17$773 USD
Retailer 7$989 USD
Retailer 3$1,058 USD
Retailer 14$1,240 USD
Retailer 2$1,347 USD

39 data points across 18 retailers

23 retailers$248 USD to $1,347 USD

A
Cheapest Retailer
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$248 USD
A
Retailer 2
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$277 USD
View
Final sale: no returns
A
Retailer 3
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$288 USD
View
A
Retailer 4
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$308 USD
View
A
Retailer 5
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$308 USD
View
A
Retailer 6
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$326 USD
£257 GBP
View
A
Retailer 7
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$412 USD
View
A
Retailer 8
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$491 USD
€468 EUR
View
A
Retailer 9
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$528 USD
ZAR 8,537 ZAR
View
A
Retailer 10
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$578 USD
View
A
Retailer 11
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$580 USD
£457 GBP
View
A
Retailer 12
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$603 USD
A$928 AUD
View
A
Retailer 13
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$612 USD
View
B+
Retailer 14
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$640 USD
View
Price last confirmed 7 days ago
B+
Retailer 15
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$749 USD
A$1,152 AUD
View
B+
Retailer 16
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$773 USD
View
B+
Retailer 17
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$989 USD
View
B
Retailer 18
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$1,041 USD
View
Retailer 19
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$1,058 USD
A$1,628 AUD
View
Price last confirmed 22 days ago
B
Retailer 20
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$1,073 USD
View
B+
Retailer 21
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$1,240 USD
£976 GBP
View
B
Retailer 22
-
$1,347 USD
View
Most Expensive
Brilliant Earth
21103692A · Sep 19
$2,000 USD
View
Price last confirmed 41 days ago
22 more retailers have this diamond
Prices start from $248 USDSave up to $1,099 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
1.01ct Marquise
$248 USD