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Marquise|Lab Grown|IGI

1.29ct D FL Marquise Lab Grown Diamond

GD • D/FL • IGI LG787621251

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG787621251

Diamond specifications and retailer prices

From $731 AUD
As of November 4, 2026
Save $2,740 AUD (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,636 AUD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 1.29ct lab-grown marquise diamond

This 1.29ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG787621251 or 787621251. Listed at 12 retailers as of November 4, 2026, with a 375% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.29
Carat
D
Colour
FL
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787621251
Dimensions11.09 × 5.61 × 3.61 mm
L/W Ratio1.98
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
11.09 mm5.61 mm1.29 ctD / FL
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787621251
Side View
Table 59.0%Crown 37.1°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 64.3%

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: $3,636 AUD|Low: $731 AUD|High: $4,943 AUD|Avg: $2,433 AUD|-1.4%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 7$731 AUD
Retailer 9$900 AUD
Retailer 5$1,136 AUD
Retailer 4$1,261 AUD
Retailer 2$1,283 AUD
Retailer 11$1,458 AUD
Retailer 3$1,481 AUD
Retailer 12$2,106 AUD
Retailer 10$2,448 AUD
Retailer 6$2,481 AUD
Retailer 8$3,471 AUD
Rare Carat$3,636 AUD

43 data points across 12 retailers

12 retailers$731 AUD to $3,471 AUD

A
Cheapest Retailer
-
$731 AUD
A
Retailer 2
-
$900 AUD
View
A
Retailer 3
-
$1,136 AUD
View
B+
Retailer 4
-
$1,261 AUD
View
B+
Retailer 5
-
$1,283 AUD
View
B+
Retailer 6
-
$1,458 AUD
View
Retailer 7
-
$1,481 AUD
View
Price last confirmed 7 days ago
B+
Retailer 8
-
$2,106 AUD
View
B
Retailer 9
-
$2,448 AUD
View
B
Retailer 10
-
$2,481 AUD
View
B
Retailer 11
-
$3,471 AUD
View
Most Expensive
Rare Carat
116_l_787621251 · Oct 28
$3,636 AUD
$2,545 USD
View
Price last confirmed 8 days ago
11 more retailers have this diamond
Prices start from $731 AUDSave up to $2,740 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
1.29ct Marquise
$731 AUD