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Marquise|Lab Grown|IGI

1.45ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG780666091

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG780666091

Diamond specifications and retailer prices

From €300 EUR
As of November 4, 2026
Save €2,363 EUR (89%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €3,049 EUR at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 1.45ct lab-grown marquise diamond

This 1.45ct 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 top-tier cut grade and certified by IGI LG780666091 or 780666091. Listed at 16 retailers as of November 4, 2026, with a 788% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.45
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780666091
Dimensions11.25 × 6.00 × 3.69 mm
L/W Ratio1.88
Girdle conditionFaceted
Culet sizePointed
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
11.25 mm6.00 mm1.45 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780666091
Side View
Table 60.0%Crown 34.2°Girdle: MED-STKPavilion 40°Culet: NoneDepth 61.5%

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: €3,049 EUR|Low: €300 EUR|High: €3,612 EUR|Avg: €1,438 EUR|+1.5%
Rare Carat
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 1, 2026
Retailer 13€300 EUR
Retailer 5€348 EUR
Retailer 8€456 EUR
Retailer 14€517 EUR
Retailer 6€550 EUR
Retailer 17€599 EUR
Retailer 11€694 EUR
Retailer 7€772 EUR
Retailer 12€875 EUR
Retailer 15€1,090 EUR
Retailer 4€1,131 EUR
Retailer 3€1,319 EUR
Retailer 2€1,602 EUR
Retailer 10€2,441 EUR
Retailer 16€2,663 EUR
Rare Carat€3,049 EUR
Retailer 9€3,171 EUR

31 data points across 17 retailers

16 retailers€300 EUR to €2,663 EUR

A
Cheapest Retailer
-
€300 EUR
A
Retailer 2
-
€348 EUR
View
A
Retailer 3
-
€456 EUR
View
Final sale: no returns
A
Retailer 4
-
€517 EUR
View
A
Retailer 5
-
€550 EUR
View
A
Retailer 6
-
€599 EUR
View
A
Retailer 7
-
€694 EUR
View
A
Retailer 8
-
€772 EUR
View
A
Retailer 9
-
€875 EUR
View
B+
Retailer 10
-
€1,090 EUR
View
B+
Retailer 11
-
€1,131 EUR
View
B+
Retailer 12
-
€1,319 EUR
View
B+
Retailer 13
-
€1,602 EUR
View
B
Retailer 14
-
€2,441 EUR
View
B
Retailer 15
-
€2,663 EUR
View
Most Expensive
Rare Carat
P82T-34B · Oct 28
€3,049 EUR
$3,435 USD
View
Price last confirmed 7 days ago
15 more retailers have this diamond
Prices start from €300 EURSave up to €2,363 EUR

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
1.45ct Marquise
€300 EUR