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Round|Lab Grown|IGI

1.00ct D SI2 Round Lab Grown Diamond

ID • D/SI2 • IGI LG819616351

Shape and cutting style on the report: Round brilliant

Certificate IGI LG819616351

Diamond specifications and retailer prices

From £111 GBP
$148 USD
As of October 29, 2026
Save £922 GBP (89%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,033 GBP at MOH London · As of October 29, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG819616351 or 819616351. Listed at 9 retailers as of October 29, 2026, with prices from £111 to £1,033, a £922 spread on the same certified stone. MOH London lists it at £1,033. 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
D
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG819616351
Dimensions6.42 × 6.45 × 3.95 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.42 mm6.45 mm1.00 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG819616351
Side View
Table 55.0%Crown 34.8°Girdle: THN-STKPavilion 40.6°Culet: NoneDepth 61.4%

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: Oct 29
Current: £1,033 GBP|Low: £96 GBP|High: £1,033 GBP|Avg: £287 GBP|+66.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 5£111 GBP
Retailer 2£207 GBP
Retailer 3£218 GBP
Retailer 6£234 GBP
Retailer 4£247 GBP
Retailer 9£315 GBP
Retailer 7£317 GBP
Retailer 8£360 GBP
MOH London£1,033 GBP

32 data points across 9 retailers

9 retailers£111 GBP to £1,033 GBP

A
Cheapest Retailer
-
£111 GBP
$148 USD
Final sale: no returns
A
Retailer 2
-
£207 GBP
View
A
Retailer 3
-
£218 GBP
€277 EUR
View
A
Retailer 4
-
£234 GBP
$311 USD
View
A
Retailer 5
-
£247 GBP
$329 USD
View
B+
Retailer 6
-
£315 GBP
$420 USD
View
Price last confirmed 31 days ago
B+
Retailer 7
-
£317 GBP
$422 USD
View
B+
Retailer 8
-
£360 GBP
$480 USD
View
Most Expensive
C
MOH London
LG819616351 · Oct 29
£1,033 GBP
View
8 more retailers have this diamond
Prices start from £111 GBPSave up to £922 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
£111 GBP