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Oval|Lab Grown|IGI

1.00ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG797645977

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG797645977

Diamond specifications and retailer prices

From £134 GBP
$179 USD
As of October 29, 2026
Save £706 GBP (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £6,127 GBP at Yorxs · As of October 29, 2026
View at Yorxs

About this 1ct lab-grown oval diamond

This 1ct 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 LG797645977 or 797645977. Listed at 18 retailers as of October 29, 2026, with a 528% 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

1.00
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG797645977
Dimensions8.07 × 5.52 × 3.48 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizePointed
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
8.07 mm5.52 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG797645977
Side View
Table 59.0%Crown 32.9°Girdle: STK-VTKPavilion 37.6°Culet: NoneDepth 63.0%

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: £149 GBP|Low: £88 GBP|High: £10,602 GBP|Avg: £876 GBP|+68.6%
Retailer 1
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
Yorxs
October 30, 2026
Retailer 10£134 GBP
Retailer 1£149 GBP
Retailer 7£293 GBP
Retailer 9£297 GBP
Retailer 4£343 GBP
Retailer 5£360 GBP
Retailer 6£440 GBP
Retailer 11£572 GBP
Retailer 8£840 GBP
Retailer 3£3,288 GBP
Retailer 14£3,406 GBP
Retailer 13£3,638 GBP
Retailer 2£4,547 GBP
Yorxs£6,127 GBP
Retailer 12£7,574 GBP

45 data points across 15 retailers

18 retailers£134 GBP to £840 GBP

A
Cheapest Retailer
-
£134 GBP
$179 USD
Retailer 2
-
£138 GBP
$185 USD
View
Price last confirmed 14 days ago
A
Retailer 3
-
£149 GBP
$199 USD
View
Final sale: no returns
Retailer 4
-
£236 GBP
$316 USD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
£293 GBP
$393 USD
View
B+
Retailer 6
-
£297 GBP
View
B+
Retailer 7
-
£343 GBP
A$708 AUD
View
Retailer 8
-
£360 GBP
$483 USD
View
Price last confirmed 7 days ago
Retailer 9
-
£391 GBP
$524 USD
View
Price last confirmed 109 days ago
Retailer 10
-
£440 GBP
$590 USD
View
Price last confirmed 7 days ago
B
Retailer 11
-
£572 GBP
$766 USD
View
B
Retailer 12
-
£840 GBP
$1,125 USD
View
Retailer 13
-
£3,288 GBP
$4,405 USD
View
Price under review
Retailer 14
-
£3,406 GBP
$4,564 USD
View
Price under review
Retailer 15
-
£3,638 GBP
$4,875 USD
View
Price under review
Retailer 16
-
£4,547 GBP
$6,092 USD
View
Price under review
Most Expensive
Yorxs
2626DE4AD · Oct 29
£6,127 GBP
€7,818 EUR
View
Price under review
16 more retailers have this diamond
Prices start from £134 GBPSave up to £706 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 Oval
£134 GBP