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Round|Lab Grown|IGI

1.27ct D VS1 Round Lab Grown Diamond

ID • D/VS1 • IGI LG771621438

Shape and cutting style on the report: Round brilliant

Certificate IGI LG771621438

Diamond specifications and retailer prices

From £139 GBP
As of November 5, 2026
Save £716 GBP (84%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £855 GBP at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

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 LG771621438 or 771621438. Listed at 22 retailers as of November 4, 2026, with prices from £139 to £855, a £716 spread on the same certified stone. Reve Diamonds lists it at £855. 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 angle33.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771621438
Dimensions6.97 × 6.99 × 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
6.97 mm6.99 mm1.27 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771621438
Side View
Table 57.0%Crown 33.1°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.2%

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 5
Current: £307 GBP|Low: £133 GBP|High: £855 GBP|Avg: £390 GBP|+8.7%
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Reve Diamonds
November 5, 2026
Retailer 5£139 GBP
Retailer 6£155 GBP
Retailer 15£160 GBP
Retailer 7£172 GBP
Retailer 14£172 GBP
Retailer 4£232 GBP
Retailer 16£289 GBP
Retailer 3£293 GBP
Retailer 18£296 GBP
Retailer 1£307 GBP
Retailer 10£315 GBP
Retailer 22£371 GBP
Retailer 2£394 GBP
Retailer 19£410 GBP
Retailer 9£412 GBP
Retailer 17£419 GBP
Retailer 21£513 GBP
Retailer 8£552 GBP
Retailer 20£557 GBP
Retailer 13£561 GBP
Retailer 11£592 GBP
Retailer 12£801 GBP
Reve Diamonds£855 GBP

34 data points across 23 retailers

22 retailers£139 GBP to £855 GBP

A
Cheapest Retailer
-
£139 GBP
A
Retailer 2
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£155 GBP
View
Final sale: no returns
A
Retailer 3
-
£160 GBP
View
Retailer 4
-
£172 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
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£172 GBP
View
B+
Retailer 6
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£232 GBP
View
A
Retailer 7
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£289 GBP
View
A
Retailer 8
-
£296 GBP
View
A
Retailer 9
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£307 GBP
View
A
Retailer 10
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£315 GBP
View
B+
Retailer 11
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£371 GBP
View
B+
Retailer 12
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£394 GBP
View
B+
Retailer 13
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£410 GBP
View
B+
Retailer 14
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£412 GBP
View
B+
Retailer 15
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£419 GBP
View
Retailer 16
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£513 GBP
View
Price last confirmed 7 days ago
B
Retailer 17
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£552 GBP
View
Retailer 18
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£557 GBP
View
Price last confirmed 8 days ago
B
Retailer 19
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£561 GBP
View
B
Retailer 20
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£592 GBP
View
B
Retailer 21
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£801 GBP
View
Most Expensive
B
Reve Diamonds
8C0664F4E · Nov 4
£855 GBP
$1,151 USD
View
21 more retailers have this diamond
Prices start from £139 GBPSave up to £716 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
£139 GBP