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Oval|Lab Grown|IGI

1.16ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG825633470

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG825633470

Diamond specifications and retailer prices

From £188 GBP
As of November 4, 2026
Save £194 GBP (51%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £654 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.16ct lab-grown oval diamond

This 1.16ct lab-grown oval sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG825633470 or 825633470. Listed at 6 retailers as of November 4, 2026, with a 103% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.16
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825633470
Dimensions8.31 × 6.14 × 3.71 mm
L/W Ratio1.35
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
8.31 mm6.14 mm1.16 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825633470
Side View
Table 61.0%Crown 32.4°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £654 GBP|Low: £188 GBP|High: £660 GBP|Avg: £366 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 4, 2026
Retailer 6£188 GBP
Retailer 2£240 GBP
Retailer 5£300 GBP
Retailer 4£382 GBP
Retailer 3£437 GBP
MOH London£654 GBP

40 data points across 6 retailers

6 retailers£188 GBP to £382 GBP

B+
Cheapest Retailer
-
£188 GBP
A
Retailer 2
-
£240 GBP
View
A
Retailer 3
-
£300 GBP
View
B+
Retailer 4
-
£382 GBP
View
Retailer 5
-
£437 GBP
View
Price last confirmed 16 days ago
Most Expensive
MOH London
LG825633470 · Oct 26
£654 GBP
View
Price last confirmed 11 days ago
5 more retailers have this diamond
Prices start from £188 GBPSave up to £194 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
1.16ct Oval
£188 GBP