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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 $509 NZD
As of November 4, 2026
Save $3,057 NZD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,566 NZD 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 $509 to $3,566, a $3,057 spread on the same certified stone. Brilliant Earth lists it at $3,566. 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

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: Nov 4
Current: $3,566 NZD|Low: $509 NZD|High: $3,583 NZD|Avg: $1,464 NZD|-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$509 NZD
Retailer 10$594 NZD
Retailer 11$852 NZD
Retailer 8$942 NZD
Retailer 16$954 NZD
Retailer 14$972 NZD
Retailer 2$1,064 NZD
Retailer 4$1,144 NZD
Retailer 12$1,384 NZD
Retailer 13$1,419 NZD
Retailer 5$1,439 NZD
Retailer 3$1,815 NZD
Retailer 7$1,904 NZD
Retailer 15$2,219 NZD
Retailer 9$2,255 NZD
Brilliant Earth$3,566 NZD

33 data points across 16 retailers

22 retailers$509 NZD to $3,566 NZD

A
Cheapest Retailer
-
$509 NZD
Final sale: no returns
Retailer 2
-
$566 NZD
View
Price last confirmed 31 days ago
A
Retailer 3
-
$594 NZD
View
Retailer 4
-
$685 NZD
View
Price last confirmed 37 days ago
Retailer 5
-
$731 NZD
View
Price last confirmed 31 days ago
A
Retailer 6
-
$852 NZD
View
A
Retailer 7
-
$942 NZD
View
Retailer 8
-
$954 NZD
View
Price last confirmed 9 days ago
A
Retailer 9
-
$972 NZD
View
A
Retailer 10
-
$1,064 NZD
View
A
Retailer 11
-
$1,144 NZD
View
A
Retailer 12
-
$1,242 NZD
View
B+
Retailer 13
-
$1,384 NZD
View
B+
Retailer 14
-
$1,419 NZD
View
B+
Retailer 15
-
$1,439 NZD
View
B+
Retailer 16
-
$1,815 NZD
View
B+
Retailer 17
-
$1,904 NZD
View
B+
Retailer 18
-
$2,219 NZD
View
B+
Retailer 19
-
$2,255 NZD
View
Retailer 20
-
$2,351 NZD
View
Price last confirmed 32 days ago
Retailer 21
-
$2,929 NZD
View
Price last confirmed 88 days ago
Most Expensive
B
Brilliant Earth
18981391A · Nov 4
$3,566 NZD
$2,010 USD
View
21 more retailers have this diamond
Prices start from $509 NZDSave up to $3,057 NZD

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
$509 NZD