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Marquise|Lab Grown|IGI

1.27ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG799671414

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG799671414

Diamond specifications and retailer prices

From £427 GBP
As of November 4, 2026
Save £1,166 GBP (73%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,856 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 1.27ct lab-grown marquise diamond

This 1.27ct 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 LG799671414 or 799671414. Listed at 13 retailers as of November 4, 2026, with a 273% 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

1.27
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799671414
Dimensions11.08 × 5.62 × 3.56 mm
L/W Ratio1.97
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
11.08 mm5.62 mm1.27 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799671414
Side View
Table 59.0%Crown 37.2°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 63.3%

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: £1,856 GBP|Low: £427 GBP|High: £2,496 GBP|Avg: £1,177 GBP|-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
Retailer 13
November 5, 2026
Retailer 7£427 GBP
Retailer 9£461 GBP
Retailer 5£522 GBP
Retailer 2£576 GBP
Retailer 3£612 GBP
Retailer 10£744 GBP
Retailer 13£754 GBP
Retailer 12£849 GBP
Retailer 11£1,163 GBP
Retailer 6£1,269 GBP
Retailer 4£1,537 GBP
Retailer 8£1,593 GBP
Rare Carat£1,856 GBP

42 data points across 13 retailers

13 retailers£427 GBP to £1,593 GBP

A
Cheapest Retailer
-
£427 GBP
A
Retailer 2
-
£461 GBP
View
A
Retailer 3
-
£522 GBP
View
A
Retailer 4
-
£576 GBP
View
A
Retailer 5
-
£612 GBP
View
A
Retailer 6
-
£744 GBP
View
A
Retailer 7
-
£754 GBP
View
B+
Retailer 8
-
£849 GBP
View
B+
Retailer 9
-
£1,163 GBP
View
B+
Retailer 10
-
£1,269 GBP
View
B
Retailer 11
-
£1,537 GBP
View
B
Retailer 12
-
£1,593 GBP
View
Most Expensive
Rare Carat
2793-T · Oct 28
£1,856 GBP
$2,505 USD
View
Price last confirmed 7 days ago
12 more retailers have this diamond
Prices start from £427 GBPSave up to £1,166 GBP

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
1.27ct Marquise
£427 GBP