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Marquise|Lab Grown|IGI

1.23ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG790626854

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG790626854

Diamond specifications and retailer prices

From €255 EUR
As of November 4, 2026
Save €1,529 EUR (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €1,784 EUR at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.23ct lab-grown marquise diamond

This 1.23ct 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 LG790626854 or 790626854. Listed at 22 retailers as of November 4, 2026, with prices from €255 to €1,784, a €1,529 spread on the same certified stone. Brilliant Earth lists it at €1,784. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790626854
Dimensions11.15 × 5.61 × 3.49 mm
L/W Ratio1.99
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
11.15 mm5.61 mm1.23 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790626854
Side View
Table 59.0%Crown 36.4°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 62.2%

Caratlytics Score

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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: Nov 4
Current: €1,784 EUR|Low: €255 EUR|High: €1,793 EUR|Avg: €732 EUR|-0.5%
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
November 5, 2026
Retailer 6€255 EUR
Retailer 10€297 EUR
Retailer 11€426 EUR
Retailer 8€471 EUR
Retailer 16€478 EUR
Retailer 14€486 EUR
Retailer 2€533 EUR
Retailer 4€572 EUR
Retailer 12€692 EUR
Retailer 13€710 EUR
Retailer 5€720 EUR
Retailer 3€908 EUR
Retailer 7€952 EUR
Retailer 15€1,110 EUR
Retailer 9€1,128 EUR
Brilliant Earth€1,784 EUR

33 data points across 16 retailers

22 retailers€255 EUR to €1,784 EUR

A
Cheapest Retailer
-
€255 EUR
Final sale: no returns
Retailer 2
-
€283 EUR
View
Price last confirmed 31 days ago
A
Retailer 3
-
€297 EUR
View
Retailer 4
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€343 EUR
View
Price last confirmed 37 days ago
Retailer 5
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€366 EUR
View
Price last confirmed 31 days ago
A
Retailer 6
-
€426 EUR
View
A
Retailer 7
-
€471 EUR
View
Retailer 8
-
€478 EUR
View
Price last confirmed 9 days ago
A
Retailer 9
-
€486 EUR
View
A
Retailer 10
-
€533 EUR
View
A
Retailer 11
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€572 EUR
View
A
Retailer 12
-
€621 EUR
View
B+
Retailer 13
-
€692 EUR
View
B+
Retailer 14
-
€710 EUR
View
B+
Retailer 15
-
€720 EUR
View
B+
Retailer 16
-
€908 EUR
View
B+
Retailer 17
-
€952 EUR
View
B+
Retailer 18
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€1,110 EUR
View
B+
Retailer 19
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€1,128 EUR
View
Retailer 20
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€1,176 EUR
View
Price last confirmed 32 days ago
Retailer 21
-
€1,465 EUR
View
Price last confirmed 88 days ago
Most Expensive
B
Brilliant Earth
18981391A · Nov 4
€1,784 EUR
$2,010 USD
View
21 more retailers have this diamond
Prices start from €255 EURSave up to €1,529 EUR

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
1.23ct Marquise
€255 EUR