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Round|Lab Grown|IGI

2.78ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG762545352

Shape and cutting style on the report: Round brilliant

Certificate IGI LG762545352

Diamond specifications and retailer prices

From £866 GBP
$1,161 USD
As of November 1, 2026
Save £4,619 GBP (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £5,486 GBP at Brilliant Earth · As of October 31, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG762545352 or 762545352. Listed at 17 retailers as of October 31, 2026, with prices from £866 to £5,486, a £4,619 spread on the same certified stone. Brilliant Earth lists it at £5,486. 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
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762545352
Dimensions9.10 × 9.14 × 5.47 mm
L/W Ratio1.00
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
9.10 mm9.14 mm2.78 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762545352
Side View
Table 59.0%Crown 33.4°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.0%

Caratlytics Score

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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 1
Current: £5,486 GBP|Low: £866 GBP|High: £6,874 GBP|Avg: £2,402 GBP|-20.2%
Brilliant Earth
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
November 1, 2026
Retailer 4£866 GBP
Retailer 12£1,086 GBP
Retailer 2£1,101 GBP
Retailer 9£1,120 GBP
Retailer 7£1,150 GBP
Retailer 5£1,350 GBP
Retailer 6£1,844 GBP
Retailer 8£1,856 GBP
Retailer 14£2,204 GBP
Retailer 10£2,712 GBP
Retailer 11£3,047 GBP
Retailer 13£3,888 GBP
Retailer 3£5,292 GBP
Brilliant Earth£5,486 GBP

42 data points across 14 retailers

17 retailers£866 GBP to £5,486 GBP

A
Cheapest Retailer
-
£866 GBP
$1,161 USD
A
Retailer 2
-
£936 GBP
HK$9,800 HKD
View
A
Retailer 3
-
£1,086 GBP
$1,455 USD
View
Retailer 4
-
£1,091 GBP
View
Price last confirmed 17 days ago
A
Retailer 5
-
£1,101 GBP
View
A
Retailer 6
-
£1,120 GBP
A$2,308 AUD
View
A
Retailer 7
-
£1,150 GBP
€1,468 EUR
View
A
Retailer 8
-
£1,350 GBP
$1,809 USD
View
B+
Retailer 9
-
£1,844 GBP
$2,471 USD
View
B+
Retailer 10
-
£1,856 GBP
ZAR 40,182 ZAR
View
B+
Retailer 11
-
£2,204 GBP
$2,953 USD
View
B+
Retailer 12
-
£2,569 GBP
$3,442 USD
View
B+
Retailer 13
-
£2,712 GBP
View
Retailer 14
-
£3,047 GBP
A$6,281 AUD
View
Price last confirmed 23 days ago
Retailer 15
-
£3,888 GBP
$5,210 USD
View
Price last confirmed 17 days ago
B
Retailer 16
-
£5,292 GBP
$7,091 USD
View
Most Expensive
B
Brilliant Earth
19080341Y · Oct 31
£5,486 GBP
$7,350 USD
View
16 more retailers have this diamond
Prices start from £866 GBPSave up to £4,619 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
£866 GBP