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Round|Lab Grown|IGI

1.00ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG799635529

Shape and cutting style on the report: Round brilliant

Certificate IGI LG799635529

Diamond specifications and retailer prices

From £100 GBP
$134 USD
As of October 29, 2026
Save £519 GBP (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £619 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG799635529 or 799635529. Listed at 16 retailers as of October 26, 2026, with prices from £100 to £619, a £519 spread on the same certified stone. MOH London lists it at £619. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799635529
Dimensions6.40 × 6.36 × 3.98 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.40 mm6.36 mm1.00 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799635529
Side View
Table 57.0%Crown 36°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 62.4%

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: £619 GBP|Low: £100 GBP|High: £626 GBP|Avg: £289 GBP|+0.2%
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
October 31, 2026
Retailer 9£100 GBP
Retailer 7£116 GBP
Retailer 6£124 GBP
Retailer 2£209 GBP
Retailer 13£219 GBP
Retailer 14£234 GBP
Retailer 10£252 GBP
Retailer 8£276 GBP
Retailer 4£307 GBP
Retailer 11£307 GBP
Retailer 12£336 GBP
Retailer 5£398 GBP
Retailer 3£440 GBP
MOH London£619 GBP

40 data points across 14 retailers

16 retailers£100 GBP to £619 GBP

A
Cheapest Retailer
-
£100 GBP
$134 USD
A
Retailer 2
-
£116 GBP
$155 USD
View
A
Retailer 3
-
£124 GBP
$166 USD
View
A
Retailer 4
-
£132 GBP
$177 USD
View
A
Retailer 5
-
£209 GBP
View
A
Retailer 6
-
£219 GBP
$293 USD
View
A
Retailer 7
-
£234 GBP
$313 USD
View
B+
Retailer 8
-
£252 GBP
€321 EUR
View
B+
Retailer 9
-
£276 GBP
View
B+
Retailer 10
-
£307 GBP
$411 USD
View
B+
Retailer 11
-
£307 GBP
$412 USD
View
B+
Retailer 12
-
£336 GBP
$450 USD
View
B
Retailer 13
-
£398 GBP
$533 USD
View
Retailer 14
-
£406 GBP
$544 USD
View
Price last confirmed 45 days ago
B
Retailer 15
-
£440 GBP
$589 USD
View
Most Expensive
B
MOH London
LG799635529 · Oct 26
£619 GBP
View
15 more retailers have this diamond
Prices start from £100 GBPSave up to £519 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
1.00ct Round
£100 GBP