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Marquise|Lab Grown|IGI

1.18ct E IF Marquise Lab Grown Diamond

VG • E/IF • IGI LG733574293

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG733574293

Diamond specifications and retailer prices

From $220 USD
As of October 30, 2026
Save $1,410 USD (87%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,630 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.18ct lab-grown marquise diamond

This 1.18ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG733574293 or 733574293. Listed at 17 retailers as of October 30, 2026, with prices from $220 to $1,630, a $1,410 spread on the same certified stone. Brilliant Earth lists it at $1,630. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.18
Carat
E
Color
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG733574293
Dimensions10.39 × 5.46 × 3.59 mm
L/W Ratio1.90
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
10.39 mm5.46 mm1.18 ctE / IF
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG733574293
Side View
Table 57.0%Crown 34°Girdle: STK-THKPavilion 41.4°Culet: NoneDepth 65.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $1,630 USD|Low: $220 USD|High: $2,260 USD|Avg: $777 USD|-27.9%
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
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Retailer 17
Retailer 18
November 2, 2026
Retailer 14$220 USD
Retailer 3$245 USD
Retailer 15$272 USD
Retailer 8$283 USD
Retailer 5$466 USD
Retailer 11$470 USD
Retailer 10$485 USD
Retailer 7$487 USD
Retailer 2$502 USD
Retailer 17$513 USD
Retailer 13$733 USD
Retailer 18$742 USD
Retailer 4$928 USD
Retailer 16$936 USD
Retailer 12$1,091 USD
Retailer 9$1,245 USD
Retailer 6$1,256 USD
Brilliant Earth$1,630 USD

38 data points across 18 retailers

17 retailers$220 USD to $1,630 USD

A
Cheapest Retailer
-
$220 USD
A
Retailer 2
-
$245 USD
View
Final sale: no returns
A
Retailer 3
-
$272 USD
View
Retailer 4
-
$283 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$466 USD
View
A
Retailer 6
-
$470 USD
ZAR 7,594 ZAR
View
A
Retailer 7
-
$487 USD
€464 EUR
View
A
Retailer 8
-
$502 USD
£395 GBP
View
A
Retailer 9
-
$513 USD
View
B+
Retailer 10
-
$733 USD
View
B+
Retailer 11
-
$742 USD
View
B
Retailer 12
-
$928 USD
View
B+
Retailer 13
-
$936 USD
View
B+
Retailer 14
-
$1,091 USD
£859 GBP
View
Retailer 15
-
$1,245 USD
View
Price last confirmed 26 days ago
B
Retailer 16
-
$1,256 USD
View
Most Expensive
B
Brilliant Earth
16731658A · Oct 31
$1,630 USD
View
16 more retailers have this diamond
Prices start from $220 USDSave up to $1,410 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
1.18ct Marquise
$220 USD