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Round|Lab Grown|IGI

1.27ct H VS1 Round Lab Grown Diamond

VG • H/VS1 • IGI LG763605026

Shape and cutting style on the report: Round brilliant

Certificate IGI LG763605026

Diamond specifications and retailer prices

From £122 GBP
As of November 1, 2026
Save £587 GBP (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £709 GBP at MOH London · As of November 2, 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG763605026 or 763605026. Listed at 14 retailers as of November 1, 2026, with prices from £122 to £709, a £587 spread on the same certified stone. MOH London lists it at £709. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.27
Carat
H
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle36.3°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG763605026
Dimensions6.87 × 6.76 × 4.33 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizeNone
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
6.87 mm6.76 mm1.27 ctH / VS1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG763605026
Side View
Table 59.0%Crown 36.3°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.4%

Caratlytics Score

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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: £709 GBP|Low: £117 GBP|High: £778 GBP|Avg: £348 GBP|-2.8%
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
November 4, 2026
Retailer 10£122 GBP
Retailer 11£137 GBP
Retailer 4£152 GBP
Retailer 6£261 GBP
Retailer 7£261 GBP
Retailer 13£273 GBP
Retailer 3£321 GBP
Retailer 12£339 GBP
Retailer 2£359 GBP
Retailer 9£391 GBP
Retailer 5£496 GBP
Retailer 8£496 GBP
MOH London£709 GBP

27 data points across 13 retailers

14 retailers£122 GBP to £709 GBP

A
Cheapest Retailer
-
£122 GBP
A
Retailer 2
-
£137 GBP
View
Final sale: no returns
Retailer 3
-
£152 GBP
View
Price last confirmed 11 days ago
Retailer 4
-
£156 GBP
View
Price last confirmed 51 days ago
A
Retailer 5
-
£261 GBP
View
A
Retailer 6
-
£261 GBP
View
B+
Retailer 7
-
£273 GBP
View
B+
Retailer 8
-
£321 GBP
View
B+
Retailer 9
-
£339 GBP
View
B+
Retailer 10
-
£359 GBP
View
B+
Retailer 11
-
£391 GBP
View
B+
Retailer 12
-
£496 GBP
View
B+
Retailer 13
-
£497 GBP
View
Most Expensive
B
MOH London
LG763605026 · Nov 2
£709 GBP
View
13 more retailers have this diamond
Prices start from £122 GBPSave up to £587 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
£122 GBP