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Oval|Lab Grown|IGI

0.91ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG650403959

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG650403959

Diamond specifications and retailer prices

From £104 GBP
$140 USD
As of October 27, 2026
Save £125 GBP (54%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £230 GBP at Diamond Heaven · As of October 28, 2026
View at Diamond Heaven

About this 0.91ct lab-grown oval diamond

This 0.91ct lab-grown oval sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG650403959 or 650403959. Listed at 3 retailers as of October 27, 2026, with prices from £104 to £230, a £125 spread on the same certified stone. Diamond Heaven lists it at £230. 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

0.91
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG650403959
Dimensions7.75 × 5.47 × 3.41 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.75 mm5.47 mm0.91 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG650403959
Side View
Table 60.0%Crown 34.8°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: £230 GBP|Low: £104 GBP|High: £478 GBP|Avg: £300 GBP
Diamond Heaven
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 28, 2026
Retailer 3£104 GBP
Retailer 2£134 GBP
Diamond Heaven£230 GBP
Retailer 4£246 GBP
Retailer 8£275 GBP
Retailer 7£355 GBP
Retailer 9£376 GBP
Retailer 6£456 GBP
Retailer 5£478 GBP

2 data points across 9 retailers

3 retailers£104 GBP to £230 GBP

A
Cheapest Retailer
-
£104 GBP
$140 USD
A
Retailer 2
-
£134 GBP
HK$1,400 HKD
View
Most Expensive
B+
Diamond Heaven
0.91SI1DLG59C1A2N · Oct 28
£230 GBP
View
2 more retailers have this diamond
Prices start from £104 GBPSave up to £125 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
0.91ct Oval
£104 GBP