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Round|Lab Grown|IGI

2.78ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG845699634

Shape and cutting style on the report: Round brilliant

Certificate IGI LG845699634

Diamond specifications and retailer prices

From £746 GBP
As of November 1, 2026
Save £9,113 GBP (92%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £9,859 GBP at Brilliant Earth · As of October 29, 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 LG845699634 or 845699634. Listed at 14 retailers as of October 29, 2026, with prices from £746 to £9,859, a £9,113 spread on the same certified stone. Brilliant Earth lists it at £9,859. 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 angle34.6°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845699634
Dimensions8.99 × 9.07 × 5.56 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
8.99 mm9.07 mm2.78 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845699634
Side View
Table 57.0%Crown 34.6°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.5%

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: £2,474 GBP|Low: £746 GBP|High: £2,605 GBP|Avg: £1,558 GBP|-0.1%
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
November 1, 2026
Retailer 7£746 GBP
Retailer 4£764 GBP
Retailer 2£875 GBP
Retailer 9£999 GBP
Retailer 11£1,031 GBP
Retailer 12£1,068 GBP
Retailer 10£1,703 GBP
Retailer 3£1,735 GBP
Retailer 8£2,222 GBP
Retailer 6£2,230 GBP
Retailer 13£2,231 GBP
Retailer 5£2,278 GBP
Retailer 1£2,474 GBP

11 data points across 13 retailers

14 retailers£746 GBP to £9,859 GBP

A
Cheapest Retailer
-
£746 GBP
A
Retailer 2
-
£764 GBP
HK$8,000 HKD
View
A
Retailer 3
-
£875 GBP
$1,172 USD
View
A
Retailer 4
-
£999 GBP
View
A
Retailer 5
-
£1,031 GBP
€1,316 EUR
View
A
Retailer 6
-
£1,068 GBP
$1,431 USD
View
A
Retailer 7
-
£1,703 GBP
ZAR 36,854 ZAR
View
A
Retailer 8
-
£1,735 GBP
$2,325 USD
View
B+
Retailer 9
-
£2,222 GBP
SGD 4,024 SGD
View
B+
Retailer 10
-
£2,230 GBP
$2,988 USD
View
B+
Retailer 11
-
£2,231 GBP
$2,989 USD
View
B+
Retailer 12
-
£2,278 GBP
$3,053 USD
View
B+
Retailer 13
-
£2,474 GBP
View
Most Expensive
B
Brilliant Earth
22283664A · Oct 29
£9,859 GBP
$13,210 USD
View
13 more retailers have this diamond
Prices start from £746 GBPSave up to £9,113 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
£746 GBP