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Marquise|Lab Grown|IGI

1.20ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG825640531

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG825640531

Diamond specifications and retailer prices

From $445 NZD
As of November 4, 2026
Save $3,032 NZD (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,477 NZD at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.2ct lab-grown marquise diamond

This 1.2ct 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 LG825640531 or 825640531. Listed at 22 retailers as of November 3, 2026, with prices from $445 to $3,477, a $3,032 spread on the same certified stone. Brilliant Earth lists it at $3,477. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825640531
Dimensions10.66 × 5.58 × 3.52 mm
L/W Ratio1.91
Girdle conditionFaceted
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
10.66 mm5.58 mm1.20 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825640531
Side View
Table 58.0%Crown 34.3°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.1%

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: $1,040 NZD|Low: $445 NZD|High: $2,821 NZD|Avg: $1,414 NZD|-37.5%
Retailer 1
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
Retailer 17
November 5, 2026
Retailer 5$445 NZD
Retailer 6$497 NZD
Retailer 2$552 NZD
Retailer 15$552 NZD
Retailer 7$745 NZD
Retailer 13$834 NZD
Retailer 17$946 NZD
Retailer 11$953 NZD
Retailer 1$1,040 NZD
Retailer 10$1,350 NZD
Retailer 3$1,377 NZD
Retailer 14$1,378 NZD
Retailer 16$1,774 NZD
Retailer 4$1,864 NZD
Retailer 12$2,212 NZD
Retailer 8$2,404 NZD
Retailer 9$2,776 NZD

41 data points across 17 retailers

22 retailers$445 NZD to $3,477 NZD

A
Cheapest Retailer
-
$445 NZD
A
Retailer 2
-
$497 NZD
View
Final sale: no returns
Retailer 3
-
$532 NZD
View
Price last confirmed 28 days ago
Retailer 4
-
$552 NZD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$552 NZD
View
Retailer 6
-
$617 NZD
View
Price last confirmed 37 days ago
Retailer 7
-
$660 NZD
View
Price last confirmed 33 days ago
A
Retailer 8
-
$745 NZD
View
A
Retailer 9
-
$834 NZD
View
Retailer 10
-
$946 NZD
View
Price last confirmed 9 days ago
A
Retailer 11
-
$953 NZD
View
A
Retailer 12
-
$1,040 NZD
View
A
Retailer 13
-
$1,350 NZD
View
B+
Retailer 14
-
$1,377 NZD
View
B+
Retailer 15
-
$1,378 NZD
View
B+
Retailer 16
-
$1,774 NZD
View
B+
Retailer 17
-
$1,864 NZD
View
Retailer 18
-
$2,120 NZD
View
Price last confirmed 36 days ago
B+
Retailer 19
-
$2,212 NZD
View
B
Retailer 20
-
$2,404 NZD
View
Retailer 21
-
$2,776 NZD
View
Price last confirmed 15 days ago
Most Expensive
B
Brilliant Earth
22457764A · Nov 3
$3,477 NZD
$1,960 USD
View
21 more retailers have this diamond
Prices start from $445 NZDSave up to $3,032 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
1.20ct Marquise
$445 NZD