Oval|Lab Grown|GIA

4.21ct H VS1 Oval Lab Grown Diamond

GD • H/VS1 • GIA 2457057723

Certificate GIA 2457057723

Diamond specifications and retailer prices

From £1,272 GBP
$1,704 USD
As of October 31, 2026
Save £3,671 GBP (74%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £6,025 GBP at Taylor and Hart · As of October 30, 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2457057723. Listed at 16 retailers as of October 29, 2026, with a 289% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.21
Carat
H
Colour
VS1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 2457057723
Dimensions12.90 × 9.22 × 5.74 mm
L/W Ratio1.40
Top View
12.90 mm9.22 mm4.21 ctH / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2457057723
Side View
Table 62.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 62.0%

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: £4,943 GBP|Low: £1,079 GBP|High: £9,247 GBP|Avg: £2,859 GBP|+0.5%
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
Retailer 15
Taylor and Hart
October 29, 2026
Retailer 6£1,272 GBP
Retailer 11£1,345 GBP
Retailer 7£1,427 GBP
Retailer 15£1,463 GBP
Retailer 2£1,506 GBP
Retailer 12£1,560 GBP
Retailer 10£1,687 GBP
Retailer 3£1,787 GBP
Retailer 8£2,190 GBP
Retailer 14£2,367 GBP
Retailer 13£2,446 GBP
Retailer 9£2,623 GBP
Retailer 4£3,264 GBP
Retailer 1£4,943 GBP
Taylor and Hart£6,025 GBP
Retailer 5£9,247 GBP

21 data points across 16 retailers

16 retailers£1,272 GBP to £4,943 GBP

B+
Cheapest Retailer
-
£1,272 GBP
$1,704 USD
B+
Retailer 2
-
£1,345 GBP
$1,802 USD
View
B
Retailer 3
-
£1,463 GBP
$1,960 USD
View
B
Retailer 4
-
£1,506 GBP
$2,018 USD
View
Final sale: no returns
Retailer 5
-
£1,560 GBP
$2,090 USD
View
Price last confirmed 19 days ago
B
Retailer 6
-
£1,560 GBP
$2,090 USD
View
B
Retailer 7
-
£1,687 GBP
$2,260 USD
View
B
Retailer 8
-
£1,787 GBP
$2,395 USD
View
Retailer 9
-
£2,190 GBP
$2,935 USD
View
Price last confirmed 10 days ago
B
Retailer 10
-
£2,367 GBP
$3,171 USD
View
B
Retailer 11
-
£2,446 GBP
$3,277 USD
View
B
Retailer 12
-
£2,623 GBP
$3,515 USD
View
B
Retailer 13
-
£3,264 GBP
View
B
Retailer 14
-
£4,943 GBP
View
Most Expensive
Taylor and Hart
3AOIBQS · Oct 30
£6,025 GBP
$8,073 USD
View
Price under review
14 more retailers have this diamond
Prices start from £1,272 GBPSave up to £3,671 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
£1,272 GBP