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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 $2,426 AUD
$1,704 USD
As of October 31, 2026
Save $7,003 AUD (74%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $11,493 AUD 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 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: $9,429 AUD|Low: $2,059 AUD|High: $17,638 AUD|Avg: $5,453 AUD|+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$2,426 AUD
Retailer 11$2,565 AUD
Retailer 7$2,723 AUD
Retailer 15$2,790 AUD
Retailer 2$2,873 AUD
Retailer 12$2,975 AUD
Retailer 10$3,217 AUD
Retailer 3$3,410 AUD
Retailer 8$4,178 AUD
Retailer 14$4,514 AUD
Retailer 13$4,665 AUD
Retailer 9$5,004 AUD
Retailer 4$6,227 AUD
Retailer 1$9,429 AUD
Taylor and Hart$11,493 AUD
Retailer 5$17,638 AUD

21 data points across 16 retailers

16 retailers$2,426 AUD to $9,429 AUD

B+
Cheapest Retailer
-
$2,426 AUD
$1,704 USD
B+
Retailer 2
-
$2,565 AUD
$1,802 USD
View
B
Retailer 3
-
$2,790 AUD
$1,960 USD
View
B
Retailer 4
-
$2,873 AUD
$2,018 USD
View
Final sale: no returns
Retailer 5
-
$2,975 AUD
$2,090 USD
View
Price last confirmed 19 days ago
B
Retailer 6
-
$2,975 AUD
$2,090 USD
View
B
Retailer 7
-
$3,217 AUD
$2,260 USD
View
B
Retailer 8
-
$3,410 AUD
$2,395 USD
View
Retailer 9
-
$4,178 AUD
$2,935 USD
View
Price last confirmed 11 days ago
B
Retailer 10
-
$4,514 AUD
$3,171 USD
View
B
Retailer 11
-
$4,665 AUD
$3,277 USD
View
B
Retailer 12
-
$5,004 AUD
$3,515 USD
View
B
Retailer 13
-
$6,227 AUD
£3,444 GBP
View
B
Retailer 14
-
$9,429 AUD
£5,215 GBP
View
Most Expensive
Taylor and Hart
3AOIBQS · Oct 31
$11,493 AUD
$8,073 USD
View
Price under review
14 more retailers have this diamond
Prices start from $2,426 AUDSave up to $7,003 AUD

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
$2,426 AUD