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Oval|Lab Grown|IGI

21.37ct F VS2 Oval Lab Grown Diamond

ID • F/VS2 • IGI LG818613599

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG818613599

Diamond specifications and retailer prices

From £10,544 GBP
As of November 1, 2026
Save £18,078 GBP (63%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £28,622 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 21.37ct lab-grown oval diamond

This 21.37ct lab-grown oval sits in the over five carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818613599 or 818613599. Listed at 8 retailers as of October 31, 2026, with prices from £10,544 to £28,622, a £18,078 spread on the same certified stone. Brilliant Earth lists it at £28,622. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

21.37
Carat
F
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818613599
Dimensions22.83 × 15.84 × 9.68 mm
L/W Ratio1.44
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
22.83 mm15.84 mm21.37 ctF / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818613599
Side View
Table 56.0%Crown 34.3°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £28,622 GBP|Low: £10,540 GBP|High: £28,726 GBP|Avg: £16,082 GBP|-0.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 2£10,544 GBP
Retailer 7£11,285 GBP
Retailer 4£12,569 GBP
Retailer 6£13,337 GBP
Retailer 8£13,721 GBP
Retailer 5£16,404 GBP
Retailer 3£24,618 GBP
Brilliant Earth£28,622 GBP

41 data points across 8 retailers

8 retailers£10,544 GBP to £28,622 GBP

B+
Cheapest Retailer
-
£10,544 GBP
B
Retailer 2
-
£11,285 GBP
$15,120 USD
View
B
Retailer 3
-
£12,569 GBP
$16,841 USD
View
B
Retailer 4
-
£13,337 GBP
$17,870 USD
View
B
Retailer 5
-
£13,721 GBP
$18,384 USD
View
B
Retailer 6
-
£16,404 GBP
$21,979 USD
View
Final sale: no returns
B
Retailer 7
-
£24,618 GBP
€31,415 EUR
View
Most Expensive
B
Brilliant Earth
22146874A · Oct 31
£28,622 GBP
$38,350 USD
View
7 more retailers have this diamond
Prices start from £10,544 GBPSave up to £18,078 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.

B+
21.37ct Oval
£10,544 GBP