Round|Lab Grown|IGI

1.27ct G VVS1 Round Lab Grown Diamond

ID • G/VVS1 • IGI LG840650590

Shape and cutting style on the report: Round brilliant

Certificate IGI LG840650590

Diamond specifications and retailer prices

From £134 GBP
$180 USD
As of October 29, 2026
Save £448 GBP (77%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £781 GBP at MOH London · As of October 19, 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 G colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG840650590 or 840650590. Listed at 21 retailers as of October 29, 2026, with a 333% 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
G
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840650590
Dimensions6.98 × 7.01 × 4.27 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.98 mm7.01 mm1.27 ctG / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840650590
Side View
Table 56.0%Crown 34.8°Girdle: MediumPavilion 40.4°Culet: NoneDepth 61.1%

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: Oct 29
Current: £781 GBP|Low: £128 GBP|High: £786 GBP|Avg: £361 GBP|-0.6%
MOH London
Retailer 2
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Retailer 4
Retailer 5
Retailer 6
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Retailer 11
Retailer 12
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Retailer 20
October 31, 2026
Retailer 19£134 GBP
Retailer 5£155 GBP
Retailer 4£166 GBP
Retailer 6£166 GBP
Retailer 3£191 GBP
Retailer 9£224 GBP
Retailer 14£278 GBP
Retailer 2£280 GBP
Retailer 16£285 GBP
Retailer 15£298 GBP
Retailer 10£353 GBP
Retailer 7£357 GBP
Retailer 13£394 GBP
Retailer 17£405 GBP
Retailer 18£463 GBP
Retailer 20£534 GBP
Retailer 12£551 GBP
Retailer 11£563 GBP
Retailer 8£575 GBP
MOH London£781 GBP

31 data points across 20 retailers

21 retailers£134 GBP to £582 GBP

A
Cheapest Retailer
-
£134 GBP
$180 USD
A
Retailer 2
-
£155 GBP
$208 USD
View
A
Retailer 3
-
£166 GBP
$223 USD
View
A
Retailer 4
-
£166 GBP
$223 USD
View
A
Retailer 5
-
£191 GBP
HK$2,000 HKD
View
B+
Retailer 6
-
£224 GBP
$300 USD
View
A
Retailer 7
-
£278 GBP
View
A
Retailer 8
-
£280 GBP
€357 EUR
View
A
Retailer 9
-
£285 GBP
ZAR 6,175 ZAR
View
A
Retailer 10
-
£298 GBP
View
B+
Retailer 11
-
£353 GBP
$473 USD
View
B+
Retailer 12
-
£357 GBP
$478 USD
View
B+
Retailer 13
-
£394 GBP
$528 USD
View
B+
Retailer 14
-
£405 GBP
A$835 AUD
View
Retailer 15
-
£463 GBP
$620 USD
View
Price last confirmed 10 days ago
B
Retailer 16
-
£534 GBP
$715 USD
View
B
Retailer 17
-
£551 GBP
SGD 998 SGD
View
B
Retailer 18
-
£563 GBP
$755 USD
View
B
Retailer 19
-
£575 GBP
$770 USD
View
B
Retailer 20
-
£582 GBP
$780 USD
View
Most Expensive
MOH London
LG840650590 · Oct 19
£781 GBP
View
Price last confirmed 13 days ago
20 more retailers have this diamond
Prices start from £134 GBPSave up to £448 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
£134 GBP