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 $349 USD
As of November 4, 2026
Save $1,751 USD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,100 USD 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 $349 to $2,100, a $1,751 spread on the same certified stone. Brilliant Earth lists it at $2,100. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $848 USD|Low: $421 USD|High: $1,660 USD|Avg: $967 USD
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$421 USD
Retailer 7$445 USD
Retailer 6$499 USD
Retailer 10$612 USD
Retailer 5$771 USD
Retailer 1$848 USD
Retailer 3$990 USD
Retailer 8$1,056 USD
Retailer 9$1,434 USD
Retailer 11$1,454 USD
Retailer 2$1,660 USD

3 data points across 11 retailers

14 retailers$349 USD to $2,100 USD

A
Cheapest Retailer
-
$349 USD
A
Retailer 2
-
$421 USD
View
Final sale: no returns
A
Retailer 3
-
$445 USD
View
A
Retailer 4
-
$499 USD
View
A
Retailer 5
-
$612 USD
View
A
Retailer 6
-
$771 USD
View
A
Retailer 7
-
$848 USD
View
B+
Retailer 8
-
$990 USD
View
B+
Retailer 9
-
$1,056 USD
View
B+
Retailer 10
-
$1,392 USD
View
B+
Retailer 11
-
$1,434 USD
View
B+
Retailer 12
-
$1,454 USD
View
B
Retailer 13
-
$1,660 USD
View
Most Expensive
B
Brilliant Earth
22501119A · Nov 4
$2,100 USD
View
13 more retailers have this diamond
Prices start from $349 USDSave up to $1,751 USD

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
$349 USD