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Round|Lab Grown|IGI

1.27ct D VS1 Round Lab Grown Diamond

ID • D/VS1 • IGI LG811636270

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811636270

Diamond specifications and retailer prices

From £161 GBP
As of November 4, 2026
Save £713 GBP (82%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,585 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.27ct lab-grown round diamond

This 1.27ct lab-grown round 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 LG811636270 or 811636270. Listed at 22 retailers as of November 4, 2026, with a 442% 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

1.27
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811636270
Dimensions6.89 × 6.94 × 4.30 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
6.89 mm6.94 mm1.27 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811636270
Side View
Table 57.0%Crown 35°Girdle: MediumPavilion 40.7°Culet: NoneDepth 62.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £323 GBP|Low: £161 GBP|High: £849 GBP|Avg: £409 GBP|+4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 9£161 GBP
Retailer 2£241 GBP
Retailer 10£306 GBP
Retailer 8£310 GBP
Retailer 1£323 GBP
Retailer 5£331 GBP
Retailer 11£397 GBP
Retailer 7£437 GBP
Retailer 4£579 GBP
Retailer 3£654 GBP
Retailer 6£839 GBP

40 data points across 11 retailers

22 retailers£161 GBP to £874 GBP

Retailer 1
-
£139 GBP
Price last confirmed 35 days ago
A
Retailer 2
-
£161 GBP
View
Final sale: no returns
Retailer 3
-
£168 GBP
View
Price last confirmed 30 days ago
Retailer 4
-
£180 GBP
View
Price last confirmed 34 days ago
A
Retailer 5
-
£199 GBP
View
B+
Retailer 6
-
£241 GBP
View
A
Retailer 7
-
£310 GBP
View
A
Retailer 8
-
£317 GBP
View
A
Retailer 9
-
£323 GBP
View
A
Retailer 10
-
£331 GBP
View
Retailer 11
-
£397 GBP
View
Price last confirmed 17 days ago
B+
Retailer 12
-
£437 GBP
View
B+
Retailer 13
-
£467 GBP
View
Retailer 14
-
£577 GBP
View
Price last confirmed 36 days ago
B
Retailer 15
-
£579 GBP
View
B
Retailer 16
-
£583 GBP
View
B
Retailer 17
-
£606 GBP
View
B
Retailer 18
-
£617 GBP
View
B
Retailer 19
-
£654 GBP
View
B
Retailer 20
-
£839 GBP
View
B
Retailer 21
-
£874 GBP
View
Most Expensive
Queensmith
LG811636270 · Oct 27
£1,585 GBP
View
Price under review
21 more retailers have this diamond
Prices start from £161 GBPSave up to £713 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
1.27ct Round
£161 GBP