Oval|Lab Grown|IGI

20.51ct F VS2 Oval Lab Grown Diamond

ID • F/VS2 • IGI LG799680853

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG799680853

Diamond specifications and retailer prices

From $63,041 NZD
$35,470 USD
As of November 2, 2026
4 retailers carry this diamond
Most expensive: $63,388 NZD at Taylor and Hart · As of October 8, 2026
View at Taylor and Hart

About this 20.51ct lab-grown oval diamond

This 20.51ct 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 LG799680853 or 799680853. Listed at 4 retailers as of November 2, 2026. 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

20.51
Carat
F
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799680853
Dimensions21.89 × 15.28 × 9.58 mm
L/W Ratio1.43
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
21.89 mm15.28 mm20.51 ctF / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799680853
Side View
Table 59.0%Crown 36.2°Girdle: MED-THKPavilion 40.2°Culet: NoneDepth 62.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: $20,163 NZD|Low: $16,593 NZD|High: $90,120 NZD|Avg: $37,380 NZD|-4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Taylor and Hart
October 10, 2026
Retailer 5$16,593 NZD
Retailer 1$20,163 NZD
Retailer 4$21,775 NZD
Retailer 2$22,303 NZD
Retailer 8$22,547 NZD
Retailer 6$25,112 NZD
Retailer 9$32,979 NZD
Retailer 3$48,250 NZD
Retailer 7$63,041 NZD
Taylor and Hart$63,388 NZD

4 data points across 10 retailers

4 retailers

Retailer 1
-
$16,593 NZD
£7,351 GBP
Price last confirmed 24 days ago
Retailer 2
-
$22,303 NZD
$12,549 USD
View
Price last confirmed 23 days ago
B
Retailer 3
-
$63,041 NZD
$35,470 USD
View
Most Expensive
Taylor and Hart
LZ0A3FL · Oct 8
$63,388 NZD
$35,666 USD
View
Price last confirmed 24 days ago
3 more retailers have this diamond
Prices start from $63,041 NZD

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
20.51ct Oval
$63,041 NZD