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Marquise|Lab Grown|IGI

1.25ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG800680076

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG800680076

Diamond specifications and retailer prices

From $713 AUD
As of November 4, 2026
Save $2,287 AUD (76%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,000 AUD 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 LG800680076 or 800680076. Listed at 15 retailers as of November 4, 2026, with prices from $713 to $3,000, a $2,287 spread on the same certified stone. Brilliant Earth lists it at $3,000. 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 angle37°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800680076
Dimensions11.06 × 5.66 × 3.53 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
11.06 mm5.66 mm1.25 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800680076
Side View
Table 60.0%Crown 37°Girdle: MediumPavilion 39.5°Culet: NoneDepth 62.4%

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: $3,000 AUD|Low: $713 AUD|High: $3,928 AUD|Avg: $1,912 AUD|-23.6%
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
November 5, 2026
Retailer 10$713 AUD
Retailer 11$874 AUD
Retailer 8$1,101 AUD
Retailer 6$1,131 AUD
Retailer 2$1,211 AUD
Retailer 4$1,246 AUD
Retailer 15$1,393 AUD
Retailer 13$1,414 AUD
Retailer 7$1,520 AUD
Retailer 14$2,048 AUD
Retailer 5$2,193 AUD
Retailer 12$2,371 AUD
Retailer 9$2,410 AUD
Retailer 3$2,656 AUD
Brilliant Earth$3,000 AUD

40 data points across 15 retailers

15 retailers$713 AUD to $3,000 AUD

A
Cheapest Retailer
-
$713 AUD
A
Retailer 2
-
$874 AUD
View
A
Retailer 3
-
$1,101 AUD
View
A
Retailer 4
-
$1,131 AUD
View
A
Retailer 5
-
$1,211 AUD
View
Retailer 6
-
$1,246 AUD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$1,393 AUD
View
A
Retailer 8
-
$1,414 AUD
View
B+
Retailer 9
-
$1,520 AUD
View
B+
Retailer 10
-
$2,048 AUD
View
Retailer 11
-
$2,193 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$2,371 AUD
View
B+
Retailer 13
-
$2,410 AUD
View
B
Retailer 14
-
$2,656 AUD
View
Most Expensive
B
Brilliant Earth
21143371A · Nov 4
$3,000 AUD
$2,100 USD
View
14 more retailers have this diamond
Prices start from $713 AUDSave up to $2,287 AUD

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
$713 AUD