Asscher|Lab Grown|IGI

1.28ct D VVS1 Asscher Lab Grown Diamond

ID • D/VVS1 • IGI LG840634542

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG840634542

Diamond specifications and retailer prices

From £312 GBP
€399 EUR
As of October 27, 2026
Save £51 GBP (14%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,036 GBP at Brilliant Earth · As of October 24, 2026
View at Brilliant Earth

About this 1.28ct lab-grown asscher diamond

This 1.28ct lab-grown asscher sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG840634542 or 840634542. Listed at 21 retailers as of October 26, 2026, with a relatively tight 16% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle28.7°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840634542
Dimensions6.12 × 6.09 × 3.79 mm
L/W Ratio1.00
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
6.12 mm6.09 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840634542
Side View
Table 60.0%Crown 28.7°Girdle: MED-STKPavilion 38.4°Culet: NoneDepth 62.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: £1,036 GBP|Low: £152 GBP|High: £1,036 GBP|Avg: £451 GBP
Brilliant Earth
Retailer 2
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October 27, 2026
Retailer 14£152 GBP
Retailer 17£161 GBP
Retailer 11£177 GBP
Retailer 3£178 GBP
Retailer 6£178 GBP
Retailer 19£204 GBP
Retailer 4£311 GBP
Retailer 2£312 GBP
Retailer 18£314 GBP
Retailer 10£319 GBP
Retailer 13£364 GBP
Retailer 20£393 GBP
Retailer 9£461 GBP
Retailer 21£473 GBP
Retailer 5£573 GBP
Retailer 16£575 GBP
Retailer 8£607 GBP
Retailer 22£613 GBP
Retailer 15£641 GBP
Retailer 12£801 GBP
Retailer 7£834 GBP
Brilliant Earth£1,036 GBP

12 data points across 22 retailers

21 retailers£312 GBP to £364 GBP

Retailer 1
-
£152 GBP
$204 USD
Price last confirmed 9 days ago
Retailer 2
-
£177 GBP
$237 USD
View
Price last confirmed 9 days ago
Retailer 3
-
£178 GBP
$239 USD
View
Price last confirmed 8 days ago
Retailer 4
-
£178 GBP
$239 USD
View
Price last confirmed 7 days ago
Retailer 5
-
£204 GBP
View
Price last confirmed 7 days ago
Retailer 6
-
£311 GBP
$417 USD
View
Price last confirmed 7 days ago
A
Retailer 7
-
£312 GBP
€399 EUR
View
Retailer 8
-
£314 GBP
View
Price last confirmed 7 days ago
Retailer 9
-
£319 GBP
ZAR 6,907 ZAR
View
Price last confirmed 10 days ago
A
Retailer 10
-
£364 GBP
$488 USD
View
Retailer 11
-
£393 GBP
View
Price last confirmed 7 days ago
Retailer 12
-
£461 GBP
A$951 AUD
View
Price last confirmed 9 days ago
Retailer 13
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£473 GBP
$635 USD
View
Price last confirmed 7 days ago
Retailer 14
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£573 GBP
$769 USD
View
Price last confirmed 7 days ago
Retailer 15
-
£575 GBP
$771 USD
View
Price last confirmed 7 days ago
Retailer 16
-
£607 GBP
SGD 1,100 SGD
View
Price last confirmed 8 days ago
Retailer 17
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£613 GBP
$822 USD
View
Price last confirmed 7 days ago
Retailer 18
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£641 GBP
$860 USD
View
Price last confirmed 8 days ago
Retailer 19
-
£801 GBP
$1,075 USD
View
Price last confirmed 14 days ago
Retailer 20
-
£834 GBP
View
Price last confirmed 8 days ago
Most Expensive
Brilliant Earth
22142922A · Oct 24
£1,036 GBP
$1,390 USD
View
Price last confirmed 8 days ago
20 more retailers have this diamond
Prices start from £312 GBPSave up to £51 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
1.28ct Asscher
£312 GBP