Oval|Lab Grown|GCAL

4.21ct D IF Oval Lab Grown Diamond

ID • D/IF • GCAL 360846217

Shape and cutting style on the report: Oval brilliant

Certificate GCAL 360846217

Diamond specifications and retailer prices

From £5,921 GBP
$7,933 USD
As of October 31, 2026
Save £9,023 GBP (60%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £25,204 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.21ct lab-grown oval diamond

This 4.21ct lab-grown oval sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GCAL 360846217. Listed at 14 retailers as of October 30, 2026, with a 152% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.21
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle40.2°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 360846217
Dimensions13.10 × 9.16 × 5.64 mm
L/W Ratio1.43
Culet sizeNone
Top View
13.10 mm9.16 mm4.21 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL 360846217
Side View
Table 58.0%Crown 32.4°Girdle: Slightly ThickPavilion 40.2°Culet: NoneDepth 61.6%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: £9,204 GBP|Low: £5,921 GBP|High: £39,160 GBP|Avg: £12,054 GBP|+0.0%
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
Taylor and Hart
November 1, 2026
Retailer 13£5,921 GBP
Retailer 10£6,275 GBP
Retailer 9£6,526 GBP
Retailer 4£7,027 GBP
Retailer 3£7,279 GBP
Retailer 11£7,279 GBP
Retailer 12£7,992 GBP
Retailer 8£8,097 GBP
Retailer 5£9,036 GBP
Retailer 1£9,204 GBP
Retailer 7£14,419 GBP
Retailer 6£22,285 GBP
Taylor and Hart£25,204 GBP
Retailer 2£39,160 GBP

45 data points across 14 retailers

14 retailers£5,921 GBP to £14,944 GBP

B+
Cheapest Retailer
-
£5,921 GBP
$7,933 USD
B+
Retailer 2
-
£6,275 GBP
$8,408 USD
View
B+
Retailer 3
-
£6,526 GBP
$8,744 USD
View
B+
Retailer 4
-
£7,027 GBP
$9,416 USD
View
Final sale: no returns
B+
Retailer 5
-
£7,279 GBP
$9,753 USD
View
Retailer 6
-
£7,279 GBP
$9,753 USD
View
Price last confirmed 15 days ago
B+
Retailer 7
-
£8,097 GBP
$10,849 USD
View
B+
Retailer 8
-
£9,036 GBP
$12,107 USD
View
B+
Retailer 9
-
£9,204 GBP
View
B
Retailer 10
-
£14,419 GBP
View
B
Retailer 11
-
£14,944 GBP
$20,023 USD
View
Retailer 12
-
£22,285 GBP
$29,860 USD
View
Price under review
Most Expensive
Taylor and Hart
RJDOXJL · Oct 31
£25,204 GBP
$33,770 USD
View
Price under review
12 more retailers have this diamond
Prices start from £5,921 GBPSave up to £9,023 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+
4.21ct Oval
£5,921 GBP