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Oval|Lab Grown|IGI

1.17ct H VS1 Oval Lab Grown Diamond

ID • H/VS1 • IGI LG818686587

Shape and cutting style on the report: Oval polygon step cut

Certificate IGI LG818686587

Diamond specifications and retailer prices

From £338 GBP
€432 EUR
As of October 31, 2026
Save £429 GBP (56%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £767 GBP at With Clarity · As of November 1, 2026
View at With Clarity

About this 1.17ct lab-grown oval diamond

This 1.17ct lab-grown oval sits in the classic one-carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818686587 or 818686587. Listed at 4 retailers as of October 31, 2026, with prices from £338 to £767, a £429 spread on the same certified stone. With Clarity lists it at £767. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.17
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.4°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818686587
Dimensions8.13 × 5.38 × 3.23 mm
L/W Ratio1.51
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.13 mm5.38 mm1.17 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818686587
Side View
Table 60.0%Crown 31.4°Girdle: Very ThickPavilion 38.6°CuletDepth 60.0%

Caratlytics Score

How it works →
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 31
Current: £542 GBP|Low: £330 GBP|High: £751 GBP|Avg: £527 GBP|+12.5%
Retailer 1
Retailer 2
Retailer 3
With Clarity
November 2, 2026
Retailer 2£338 GBP
Retailer 3£484 GBP
Retailer 1£542 GBP
With Clarity£751 GBP

13 data points across 4 retailers

4 retailers£338 GBP to £767 GBP

A
Cheapest Retailer
-
£338 GBP
€432 EUR
B
Retailer 2
-
£484 GBP
$650 USD
View
B
Retailer 3
-
£542 GBP
$727 USD
View
Most Expensive
B
With Clarity
818686587 · Nov 1
£767 GBP
$1,029 USD
View
3 more retailers have this diamond
Prices start from £338 GBPSave up to £429 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
1.17ct Oval
£338 GBP