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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 $367 SGD
As of November 4, 2026
Save $2,202 SGD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,569 SGD 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 $367 to $2,569, a $2,202 spread on the same certified stone. Brilliant Earth lists it at $2,569. 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: $2,569 SGD|Low: $367 SGD|High: $2,581 SGD|Avg: $1,057 SGD|-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 4, 2026
Retailer 6$367 SGD
Retailer 2$428 SGD
Retailer 10$613 SGD
Retailer 8$679 SGD
Retailer 16$688 SGD
Retailer 13$700 SGD
Retailer 9$767 SGD
Retailer 4$824 SGD
Retailer 11$997 SGD
Retailer 12$1,022 SGD
Retailer 5$1,036 SGD
Retailer 3$1,307 SGD
Retailer 7$1,371 SGD
Retailer 15$1,599 SGD
Retailer 14$1,627 SGD
Brilliant Earth$2,569 SGD

32 data points across 16 retailers

22 retailers$367 SGD to $2,569 SGD

A
Cheapest Retailer
-
$367 SGD
Final sale: no returns
Retailer 2
-
$408 SGD
View
Price last confirmed 30 days ago
A
Retailer 3
-
$428 SGD
View
Retailer 4
-
$493 SGD
View
Price last confirmed 36 days ago
Retailer 5
-
$526 SGD
View
Price last confirmed 30 days ago
A
Retailer 6
-
$613 SGD
View
A
Retailer 7
-
$679 SGD
View
Retailer 8
-
$688 SGD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$700 SGD
View
A
Retailer 10
-
$767 SGD
View
A
Retailer 11
-
$824 SGD
View
A
Retailer 12
-
$895 SGD
View
B+
Retailer 13
-
$997 SGD
View
B+
Retailer 14
-
$1,022 SGD
View
B+
Retailer 15
-
$1,036 SGD
View
B+
Retailer 16
-
$1,307 SGD
View
B+
Retailer 17
-
$1,371 SGD
View
B+
Retailer 18
-
$1,599 SGD
View
B+
Retailer 19
-
$1,627 SGD
View
Retailer 20
-
$1,693 SGD
View
Price last confirmed 31 days ago
Retailer 21
-
$2,110 SGD
View
Price last confirmed 87 days ago
Most Expensive
B
Brilliant Earth
18981391A · Nov 4
$2,569 SGD
$2,010 USD
View
21 more retailers have this diamond
Prices start from $367 SGDSave up to $2,202 SGD

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
$367 SGD