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Asscher|Lab Grown|IGI

2.78ct D SI1 Asscher Lab Grown Diamond

ID • D/SI1 • IGI LG652428584

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG652428584

Diamond specifications and retailer prices

From £351 GBP
As of November 4, 2026
Save £1,915 GBP (85%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £2,556 GBP at Rare Carat · As of September 28, 2026
View at Rare Carat

About this 2.78ct lab-grown asscher diamond

This 2.78ct lab-grown asscher sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG652428584 or 652428584. Listed at 17 retailers as of November 4, 2026, with a 546% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.78
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG652428584
Dimensions7.66 × 7.39 × 5.13 mm
L/W Ratio1.04
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.66 mm7.39 mm2.78 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG652428584
Side View
Table 64.0%Crown 32.8°Girdle: Slightly ThickPavilion 39.8°Culet: NoneDepth 69.4%

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 4
Current: £2,556 GBP|Low: £236 GBP|High: £3,232 GBP|Avg: £978 GBP
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
Retailer 14
Retailer 15
Retailer 16
November 5, 2026
Retailer 6£351 GBP
Retailer 11£351 GBP
Retailer 16£389 GBP
Retailer 15£428 GBP
Retailer 2£473 GBP
Retailer 5£498 GBP
Retailer 14£606 GBP
Retailer 3£614 GBP
Retailer 9£635 GBP
Retailer 12£864 GBP
Retailer 7£1,235 GBP
Retailer 8£1,274 GBP
Retailer 4£1,412 GBP
Retailer 10£1,427 GBP
Retailer 13£2,266 GBP
Rare Carat£2,556 GBP

38 data points across 16 retailers

17 retailers£351 GBP to £2,266 GBP

A
Cheapest Retailer
-
£351 GBP
Final sale: no returns
A
Retailer 2
-
£351 GBP
View
Retailer 3
-
£389 GBP
View
Price last confirmed 21 days ago
A
Retailer 4
-
£428 GBP
View
A
Retailer 5
-
£473 GBP
View
A
Retailer 6
-
£498 GBP
View
Retailer 7
-
£606 GBP
View
Price last confirmed 10 days ago
B+
Retailer 8
-
£614 GBP
View
A
Retailer 9
-
£635 GBP
View
B+
Retailer 10
-
£864 GBP
View
B
Retailer 11
-
£1,035 GBP
View
B
Retailer 12
-
£1,235 GBP
View
B
Retailer 13
-
£1,274 GBP
View
B
Retailer 14
-
£1,412 GBP
View
B
Retailer 15
-
£1,427 GBP
View
B
Retailer 16
-
£2,266 GBP
View
Most Expensive
Rare Carat
665844285AS652 · Sep 28
£2,556 GBP
$3,440 USD
View
Price last confirmed 38 days ago
16 more retailers have this diamond
Prices start from £351 GBPSave up to £1,915 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 Asscher
£351 GBP