Marquise|Lab Grown|IGI

1.28ct D VS1 Marquise Lab Grown Diamond

ID • D/VS1 • IGI LG836611815

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG836611815

Diamond specifications and retailer prices

From £392 GBP
As of November 1, 2026
Save £227 GBP (37%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £921 GBP at Reve Diamonds · As of October 25, 2026
View at Reve Diamonds

About this 1.28ct lab-grown marquise diamond

This 1.28ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG836611815 or 836611815. Listed at 20 retailers as of October 29, 2026, with a 58% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836611815
Dimensions11.16 × 5.71 × 3.48 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.16 mm5.71 mm1.28 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836611815
Side View
Table 63.0%Crown 34.4°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £619 GBP|Low: £153 GBP|High: £921 GBP|Avg: £461 GBP
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
Retailer 14
Retailer 15
Retailer 16
Reve Diamonds
October 29, 2026
Retailer 3£160 GBP
Retailer 8£179 GBP
Retailer 5£199 GBP
Retailer 11£264 GBP
Retailer 6£267 GBP
Retailer 15£335 GBP
Retailer 12£346 GBP
Retailer 10£355 GBP
Retailer 9£392 GBP
Retailer 14£482 GBP
Retailer 16£514 GBP
Retailer 2£556 GBP
Retailer 1£619 GBP
Retailer 7£641 GBP
Retailer 4£793 GBP
Retailer 13£795 GBP
Reve Diamonds£921 GBP

36 data points across 17 retailers

20 retailers£392 GBP to £619 GBP

Retailer 1
-
£160 GBP
Price last confirmed 12 days ago
Retailer 2
-
£185 GBP
View
Price last confirmed 11 days ago
Retailer 3
-
£199 GBP
View
Price last confirmed 10 days ago
Retailer 4
-
£199 GBP
View
Price last confirmed 10 days ago
Retailer 5
-
£264 GBP
View
Price last confirmed 9 days ago
Retailer 6
-
£267 GBP
View
Price last confirmed 10 days ago
Retailer 7
-
£335 GBP
View
Price last confirmed 12 days ago
Retailer 8
-
£346 GBP
View
Price last confirmed 8 days ago
Retailer 9
-
£355 GBP
View
Price last confirmed 9 days ago
B+
Retailer 10
-
£392 GBP
View
Retailer 11
-
£482 GBP
View
Price last confirmed 11 days ago
Retailer 12
-
£514 GBP
View
Price last confirmed 9 days ago
Retailer 13
-
£556 GBP
View
Price last confirmed 14 days ago
B+
Retailer 14
-
£619 GBP
View
Retailer 15
-
£637 GBP
View
Price last confirmed 10 days ago
Retailer 16
-
£641 GBP
View
Price last confirmed 8 days ago
Retailer 17
-
£676 GBP
View
Price last confirmed 9 days ago
Retailer 18
-
£793 GBP
View
Price last confirmed 9 days ago
Retailer 19
-
£795 GBP
View
Price last confirmed 9 days ago
Most Expensive
Reve Diamonds
8A500A192 · Oct 25
£921 GBP
$1,244 USD
View
Price last confirmed 10 days ago
19 more retailers have this diamond
Prices start from £392 GBPSave up to £227 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.

B+
1.28ct Marquise
£392 GBP