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Marquise|Lab Grown|IGI

1.55ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG775633135

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG775633135

Diamond specifications and retailer prices

From $1,795 NZD
$1,010 USD
As of November 2, 2026
Save $4,106 NZD (70%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $5,901 NZD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.55ct lab-grown marquise diamond

This 1.55ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG775633135 or 775633135. Listed at 2 retailers as of November 2, 2026, with prices from $1,795 to $5,901, a $4,106 spread on the same certified stone. Brilliant Earth lists it at $5,901. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG775633135
Dimensions11.91 × 6.00 × 3.77 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
11.91 mm6.00 mm1.55 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG775633135
Side View
Table 58.0%Crown 34.9°Girdle: THN-MEDPavilion 40.3°Culet: NoneDepth 62.8%

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 2
Current: $5,901 NZD|Low: $1,322 NZD|High: $7,243 NZD|Avg: $4,219 NZD|-14.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
September 27, 2026
Retailer 2$1,795 NZD
Retailer 3$2,773 NZD
Retailer 5$2,792 NZD
Retailer 7$2,824 NZD
Retailer 6$2,879 NZD
Retailer 10$3,224 NZD
Retailer 4$3,446 NZD
Retailer 11$3,482 NZD
Brilliant Earth$5,901 NZD
Retailer 12$6,048 NZD
Retailer 9$6,050 NZD
Retailer 8$6,456 NZD

32 data points across 12 retailers

2 retailers$1,795 NZD to $5,901 NZD

A
Cheapest Retailer
-
$1,795 NZD
$1,010 USD
Final sale: no returns
Most Expensive
B
Brilliant Earth
18047172A · Nov 2
$5,901 NZD
$3,320 USD
View
1 more retailer has this diamond
Prices start from $1,795 NZDSave up to $4,106 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
1.55ct Marquise
$1,795 NZD