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Round|Lab Grown|IGI

0.99ct D VS1 Round Lab Grown Diamond

ID • D/VS1 • IGI LG771611290

Shape and cutting style on the report: Round brilliant

Certificate IGI LG771611290

Diamond specifications and retailer prices

From £113 GBP
As of November 1, 2026
Save £540 GBP (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £653 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 0.99ct lab-grown round diamond

This 0.99ct lab-grown round sits in the just-under-one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG771611290 or 771611290. Listed at 19 retailers as of November 1, 2026, with prices from £113 to £653, a £540 spread on the same certified stone. MOH London lists it at £653. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.99
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771611290
Dimensions6.36 × 6.41 × 3.97 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.36 mm6.41 mm0.99 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771611290
Side View
Table 55.0%Crown 33.2°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £653 GBP|Low: £113 GBP|High: £667 GBP|Avg: £344 GBP|-2.0%
MOH London
Retailer 2
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Retailer 18
November 5, 2026
Retailer 14£113 GBP
Retailer 5£126 GBP
Retailer 4£131 GBP
Retailer 15£140 GBP
Retailer 11£241 GBP
Retailer 13£254 GBP
Retailer 9£257 GBP
Retailer 2£282 GBP
Retailer 12£348 GBP
Retailer 3£376 GBP
Retailer 7£385 GBP
Retailer 16£400 GBP
Retailer 10£430 GBP
Retailer 17£450 GBP
Retailer 8£455 GBP
Retailer 18£476 GBP
Retailer 6£491 GBP
MOH London£653 GBP

26 data points across 18 retailers

19 retailers£113 GBP to £653 GBP

A
Cheapest Retailer
-
£113 GBP
A
Retailer 2
-
£126 GBP
View
Final sale: no returns
A
Retailer 3
-
£131 GBP
View
A
Retailer 4
-
£140 GBP
View
A
Retailer 5
-
£226 GBP
View
A
Retailer 6
-
£241 GBP
View
A
Retailer 7
-
£254 GBP
View
A
Retailer 8
-
£257 GBP
View
A
Retailer 9
-
£282 GBP
View
B+
Retailer 10
-
£348 GBP
View
B+
Retailer 11
-
£376 GBP
View
B+
Retailer 12
-
£385 GBP
View
B+
Retailer 13
-
£400 GBP
View
Retailer 14
-
£430 GBP
View
Price last confirmed 10 days ago
B+
Retailer 15
-
£450 GBP
View
B+
Retailer 16
-
£455 GBP
View
B
Retailer 17
-
£476 GBP
View
B+
Retailer 18
-
£491 GBP
View
Most Expensive
B
MOH London
LG771611290 · Nov 4
£653 GBP
View
18 more retailers have this diamond
Prices start from £113 GBPSave up to £540 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
0.99ct Round
£113 GBP