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Marquise|Lab Grown|IGI

1.09ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG778632689

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG778632689

Diamond specifications and retailer prices

From $261 USD
As of October 30, 2026
Save $1,408 USD (84%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $1,930 USD at Brilliant Earth · As of September 24, 2026
View at Brilliant Earth

About this 1.09ct lab-grown marquise diamond

This 1.09ct 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 LG778632689 or 778632689. Listed at 24 retailers as of October 30, 2026, with a 539% 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

1.09
Carat
E
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778632689
Dimensions11.33 × 5.31 × 3.20 mm
L/W Ratio2.13
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.33 mm5.31 mm1.09 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778632689
Side View
Table 57.0%Crown 33.3°Girdle: MED-STKPavilion 38.4°Culet: NoneDepth 60.3%

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: $1,295 USD|Low: $258 USD|High: $1,387 USD|Avg: $671 USD|-0.1%
Retailer 1
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
Retailer 18
Retailer 19
Retailer 20
November 1, 2026
Retailer 5$261 USD
Retailer 2$302 USD
Retailer 8$302 USD
Retailer 19$323 USD
Retailer 20$323 USD
Retailer 12$342 USD
Retailer 15$500 USD
Retailer 9$539 USD
Retailer 17$555 USD
Retailer 7$569 USD
Retailer 18$574 USD
Retailer 14$618 USD
Retailer 6$661 USD
Retailer 16$787 USD
Retailer 4$861 USD
Retailer 3$1,039 USD
Retailer 11$1,090 USD
Retailer 13$1,144 USD
Retailer 1$1,295 USD
Retailer 10$1,387 USD

27 data points across 20 retailers

24 retailers$261 USD to $1,669 USD

A
Cheapest Retailer
-
$261 USD
A
Retailer 2
-
$302 USD
View
Final sale: no returns
A
Retailer 3
-
$302 USD
View
Retailer 4
-
$323 USD
View
Price last confirmed 8 days ago
A
Retailer 5
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$323 USD
View
A
Retailer 6
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$342 USD
£269 GBP
View
A
Retailer 7
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$500 USD
View
A
Retailer 8
-
$539 USD
View
A
Retailer 9
-
$555 USD
ZAR 8,973 ZAR
View
A
Retailer 10
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$569 USD
View
A
Retailer 11
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$574 USD
€547 EUR
View
A
Retailer 12
-
$618 USD
£487 GBP
View
B+
Retailer 13
-
$661 USD
View
B+
Retailer 14
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$787 USD
A$1,210 AUD
View
B+
Retailer 15
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$861 USD
View
B+
Retailer 16
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$1,039 USD
View
B
Retailer 17
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$1,090 USD
View
Retailer 18
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$1,144 USD
A$1,760 AUD
View
Price last confirmed 25 days ago
B
Retailer 19
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$1,194 USD
View
Retailer 20
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$1,205 USD
View
Price last confirmed 18 days ago
B+
Retailer 21
-
$1,295 USD
£1,020 GBP
View
B
Retailer 22
-
$1,387 USD
View
B
Retailer 23
-
$1,669 USD
View
Most Expensive
Brilliant Earth
21531701A · Sep 24
$1,930 USD
View
Price last confirmed 38 days ago
23 more retailers have this diamond
Prices start from $261 USDSave up to $1,408 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
1.09ct Marquise
$261 USD