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Round|Lab Grown|IGI

1.05ct H VS1 Round Lab Grown Diamond

EX • H/VS1 • IGI LG778658590

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778658590

Diamond specifications and retailer prices

From £111 GBP
$149 USD
As of October 29, 2026
Save £538 GBP (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £649 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.05ct lab-grown round diamond

This 1.05ct lab-grown round sits in the classic one-carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG778658590 or 778658590. Listed at 18 retailers as of October 29, 2026, with prices from £111 to £649, a £538 spread on the same certified stone. MOH London lists it at £649. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778658590
Dimensions6.60 × 6.57 × 3.94 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.60 mm6.57 mm1.05 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778658590
Side View
Table 63.0%Crown 33°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 59.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £649 GBP|Low: £107 GBP|High: £664 GBP|Avg: £292 GBP|-2.3%
MOH London
Retailer 2
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Retailer 18
October 29, 2026
Retailer 7£111 GBP
Retailer 5£125 GBP
Retailer 3£129 GBP
Retailer 4£138 GBP
Retailer 16£138 GBP
Retailer 17£234 GBP
Retailer 14£237 GBP
Retailer 12£253 GBP
Retailer 2£254 GBP
Retailer 10£306 GBP
Retailer 15£337 GBP
Retailer 13£357 GBP
Retailer 11£378 GBP
Retailer 6£379 GBP
Retailer 18£444 GBP
Retailer 8£447 GBP
Retailer 9£486 GBP
MOH London£649 GBP

30 data points across 18 retailers

18 retailers£111 GBP to £649 GBP

A
Cheapest Retailer
-
£111 GBP
$149 USD
A
Retailer 2
-
£129 GBP
$173 USD
View
Retailer 3
-
£138 GBP
$185 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
£138 GBP
$185 USD
View
A
Retailer 5
-
£234 GBP
$313 USD
View
A
Retailer 6
-
£237 GBP
ZAR 5,135 ZAR
View
A
Retailer 7
-
£253 GBP
$339 USD
View
A
Retailer 8
-
£254 GBP
View
Retailer 9
-
£306 GBP
$410 USD
View
Price last confirmed 13 days ago
B+
Retailer 10
-
£337 GBP
A$694 AUD
View
B+
Retailer 11
-
£357 GBP
$478 USD
View
B+
Retailer 12
-
£378 GBP
$506 USD
View
B+
Retailer 13
-
£379 GBP
SGD 687 SGD
View
Retailer 14
-
£442 GBP
$592 USD
View
Price last confirmed 41 days ago
B+
Retailer 15
-
£444 GBP
$595 USD
View
B+
Retailer 16
-
£447 GBP
$599 USD
View
B+
Retailer 17
-
£486 GBP
$651 USD
View
Most Expensive
B
MOH London
LG778658590 · Oct 29
£649 GBP
View
17 more retailers have this diamond
Prices start from £111 GBPSave up to £538 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
1.05ct Round
£111 GBP