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Round|Lab Grown|IGI

2.78ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG804660594

Shape and cutting style on the report: Round brilliant

Certificate IGI LG804660594

Diamond specifications and retailer prices

From £964 GBP
$1,291 USD
As of October 30, 2026
Save £7,560 GBP (89%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £8,523 GBP at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 2.78ct lab-grown round diamond

This 2.78ct lab-grown round sits in the two to three carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804660594 or 804660594. Listed at 6 retailers as of October 26, 2026, with prices from £964 to £8,523, a £7,560 spread on the same certified stone. Brilliant Earth lists it at £8,523. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.78
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804660594
Dimensions9.05 × 8.99 × 5.57 mm
L/W Ratio1.01
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
9.05 mm8.99 mm2.78 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804660594
Side View
Table 57.0%Crown 34.4°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.7%

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: Oct 30
Current: £8,523 GBP|Low: £964 GBP|High: £8,792 GBP|Avg: £3,026 GBP|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 3£964 GBP
Retailer 4£1,230 GBP
Retailer 5£1,517 GBP
Retailer 6£1,867 GBP
Retailer 2£2,888 GBP
Brilliant Earth£8,523 GBP

25 data points across 6 retailers

6 retailers£964 GBP to £8,523 GBP

A
Cheapest Retailer
-
£964 GBP
$1,291 USD
A
Retailer 2
-
£1,230 GBP
$1,648 USD
View
A
Retailer 3
-
£1,517 GBP
€1,936 EUR
View
Retailer 4
-
£1,867 GBP
$2,502 USD
View
Price last confirmed 28 days ago
B+
Retailer 5
-
£2,888 GBP
View
Most Expensive
B
Brilliant Earth
20416073A · Oct 26
£8,523 GBP
$11,420 USD
View
5 more retailers have this diamond
Prices start from £964 GBPSave up to £7,560 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
2.78ct Round
£964 GBP