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Round|Lab Grown|IGI

1.27ct F VS1 Round Lab Grown Diamond

ID • F/VS1 • IGI LG776690650

Shape and cutting style on the report: Round brilliant

Certificate IGI LG776690650

Diamond specifications and retailer prices

From £135 GBP
As of November 1, 2026
Save £510 GBP (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £768 GBP at MOH London · As of October 21, 2026
View at MOH London

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 F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG776690650 or 776690650. Listed at 12 retailers as of November 1, 2026, with a 378% 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
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776690650
Dimensions6.96 × 6.93 × 4.27 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
6.96 mm6.93 mm1.27 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776690650
Side View
Table 59.0%Crown 35.8°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
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 1
Current: £768 GBP|Low: £127 GBP|High: £772 GBP|Avg: £377 GBP|+0.5%
MOH London
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
November 4, 2026
Retailer 7£135 GBP
Retailer 4£156 GBP
Retailer 3£158 GBP
Retailer 10£162 GBP
Retailer 14£221 GBP
Retailer 2£290 GBP
Retailer 8£303 GBP
Retailer 11£358 GBP
Retailer 13£370 GBP
Retailer 5£521 GBP
Retailer 6£524 GBP
Retailer 9£615 GBP
Retailer 12£644 GBP
MOH London£768 GBP

41 data points across 14 retailers

12 retailers£135 GBP to £644 GBP

A
Cheapest Retailer
-
£135 GBP
A
Retailer 2
-
£162 GBP
View
B+
Retailer 3
-
£221 GBP
View
A
Retailer 4
-
£290 GBP
View
A
Retailer 5
-
£303 GBP
View
A
Retailer 6
-
£314 GBP
View
B+
Retailer 7
-
£358 GBP
View
B+
Retailer 8
-
£370 GBP
View
B
Retailer 9
-
£565 GBP
View
B
Retailer 10
-
£615 GBP
View
B
Retailer 11
-
£644 GBP
View
Most Expensive
MOH London
LG776690650 · Oct 21
£768 GBP
View
Price last confirmed 15 days ago
11 more retailers have this diamond
Prices start from £135 GBPSave up to £510 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
£135 GBP