CaratHunter
Plans
Marquise|Lab Grown|IGI

0.78ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG815641272

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG815641272

Diamond specifications and retailer prices

From £340 GBP
As of November 4, 2026
Save £1,612 GBP (83%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,952 GBP at Riddles Jewelry · As of November 4, 2026
View at Riddles Jewelry

About this 0.78ct lab-grown marquise diamond

This 0.78ct lab-grown marquise sits in the just-under-one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG815641272 or 815641272. Listed at 22 retailers as of November 4, 2026, with prices from £340 to £1,952, a £1,612 spread on the same certified stone. Riddles Jewelry lists it at £1,952. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.78
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815641272
Dimensions9.39 × 4.82 × 3.06 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.39 mm4.82 mm0.78 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815641272
Side View
Table 58.0%Crown 36.2°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 63.5%

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: £380 GBP|Low: £326 GBP|High: £1,568 GBP|Avg: £718 GBP|-11.9%
Retailer 1
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 15£340 GBP
Retailer 1£380 GBP
Retailer 5£381 GBP
Retailer 3£422 GBP
Retailer 6£422 GBP
Retailer 7£556 GBP
Retailer 11£640 GBP
Retailer 2£672 GBP
Retailer 13£677 GBP
Retailer 8£691 GBP
Retailer 10£765 GBP
Retailer 14£930 GBP
Retailer 12£981 GBP
Retailer 4£1,356 GBP
Retailer 9£1,545 GBP

46 data points across 15 retailers

22 retailers£340 GBP to £1,952 GBP

A
Cheapest Retailer
-
£340 GBP
A
Retailer 2
-
£380 GBP
View
Final sale: no returns
A
Retailer 3
-
£381 GBP
View
Retailer 4
-
£422 GBP
View
Price last confirmed 20 days ago
A
Retailer 5
-
£422 GBP
View
A
Retailer 6
-
£424 GBP
View
A
Retailer 7
-
£442 GBP
View
B+
Retailer 8
-
£556 GBP
View
Retailer 9
-
£640 GBP
View
Price last confirmed 9 days ago
B+
Retailer 10
-
£672 GBP
View
B+
Retailer 11
-
£677 GBP
View
B+
Retailer 12
-
£691 GBP
View
B+
Retailer 13
-
£765 GBP
View
B
Retailer 14
-
£930 GBP
View
B+
Retailer 15
-
£981 GBP
View
B
Retailer 16
-
£1,356 GBP
View
B
Retailer 17
-
£1,378 GBP
View
B
Retailer 18
-
£1,407 GBP
View
B
Retailer 19
-
£1,498 GBP
View
B
Retailer 20
-
£1,545 GBP
View
B
Retailer 21
-
£1,561 GBP
View
Most Expensive
B
Riddles Jewelry
1966490676 · Nov 4
£1,952 GBP
$2,627 USD
View
21 more retailers have this diamond
Prices start from £340 GBPSave up to £1,612 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
0.78ct Marquise
£340 GBP