CaratHunter
Plans
Round|Lab Grown|IGI

1.00ct H SI1 Round Lab Grown Diamond

ID • H/SI1 • IGI LG831695167

Shape and cutting style on the report: Round brilliant

Certificate IGI LG831695167

Diamond specifications and retailer prices

From £150 GBP
$201 USD
As of October 27, 2026
Save £553 GBP (79%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £703 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG831695167 or 831695167. Listed at 8 retailers as of October 26, 2026, with prices from £150 to £703, a £553 spread on the same certified stone. MOH London lists it at £703. 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
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831695167
Dimensions6.44 × 6.39 × 3.94 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.44 mm6.39 mm1.00 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831695167
Side View
Table 60.0%Crown 34.6°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 61.4%

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 27
Current: £703 GBP|Low: £150 GBP|High: £703 GBP|Avg: £328 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 4£150 GBP
Retailer 7£188 GBP
Retailer 5£214 GBP
Retailer 2£236 GBP
Retailer 6£412 GBP
Retailer 3£510 GBP
MOH London£703 GBP

7 data points across 7 retailers

8 retailers£150 GBP to £703 GBP

A
Cheapest Retailer
-
£150 GBP
$201 USD
A
Retailer 2
-
£150 GBP
$201 USD
View
B+
Retailer 3
-
£188 GBP
$252 USD
View
A
Retailer 4
-
£214 GBP
$287 USD
View
A
Retailer 5
-
£236 GBP
View
A
Retailer 6
-
£412 GBP
SGD 746 SGD
View
A
Retailer 7
-
£510 GBP
$684 USD
View
Most Expensive
B+
MOH London
LG831695167 · Oct 26
£703 GBP
View
7 more retailers have this diamond
Prices start from £150 GBPSave up to £553 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
£150 GBP