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Marquise|Lab Grown|IGI

1.25ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG850604664

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG850604664

Diamond specifications and retailer prices

From $621 NZD
As of November 4, 2026
Save $3,115 NZD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,736 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.25ct lab-grown marquise diamond

This 1.25ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG850604664 or 850604664. Listed at 14 retailers as of November 4, 2026, with prices from $621 to $3,736, a $3,115 spread on the same certified stone. Brilliant Earth lists it at $3,736. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG850604664
Dimensions11.01 × 5.64 × 3.55 mm
L/W Ratio1.95
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
11.01 mm5.64 mm1.25 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG850604664
Side View
Table 58.0%Crown 35.7°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,509 NZD|Low: $749 NZD|High: $2,953 NZD|Avg: $1,719 NZD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 4$749 NZD
Retailer 7$792 NZD
Retailer 6$888 NZD
Retailer 10$1,089 NZD
Retailer 5$1,372 NZD
Retailer 1$1,509 NZD
Retailer 3$1,761 NZD
Retailer 8$1,879 NZD
Retailer 9$2,551 NZD
Retailer 11$2,587 NZD
Retailer 2$2,953 NZD

3 data points across 11 retailers

14 retailers$621 NZD to $3,736 NZD

A
Cheapest Retailer
-
$621 NZD
A
Retailer 2
-
$749 NZD
View
Final sale: no returns
A
Retailer 3
-
$792 NZD
View
A
Retailer 4
-
$888 NZD
View
A
Retailer 5
-
$1,089 NZD
View
A
Retailer 6
-
$1,372 NZD
View
A
Retailer 7
-
$1,509 NZD
View
B+
Retailer 8
-
$1,761 NZD
View
B+
Retailer 9
-
$1,879 NZD
View
B+
Retailer 10
-
$2,476 NZD
View
B+
Retailer 11
-
$2,551 NZD
View
B+
Retailer 12
-
$2,587 NZD
View
B
Retailer 13
-
$2,953 NZD
View
Most Expensive
B
Brilliant Earth
22501119A · Nov 4
$3,736 NZD
$2,100 USD
View
13 more retailers have this diamond
Prices start from $621 NZDSave up to $3,115 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
1.25ct Marquise
$621 NZD