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 $3,023 NZD
$1,704 USD
As of October 31, 2026
Save $8,665 NZD (74%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $14,324 NZD 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 31, 2026, with a 287% 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: $11,688 NZD|Low: $2,566 NZD|High: $21,984 NZD|Avg: $6,792 NZD
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
November 1, 2026
Retailer 6$3,023 NZD
Retailer 11$3,197 NZD
Retailer 7$3,394 NZD
Retailer 15$3,478 NZD
Retailer 2$3,581 NZD
Retailer 12$3,708 NZD
Retailer 10$4,010 NZD
Retailer 3$4,249 NZD
Retailer 8$5,208 NZD
Retailer 14$5,626 NZD
Retailer 13$5,814 NZD
Retailer 9$6,237 NZD
Retailer 4$7,761 NZD
Retailer 1$11,688 NZD
Taylor and Hart$14,324 NZD
Retailer 5$21,984 NZD

22 data points across 16 retailers

16 retailers$3,023 NZD to $11,688 NZD

B+
Cheapest Retailer
-
$3,023 NZD
$1,704 USD
B+
Retailer 2
-
$3,197 NZD
$1,802 USD
View
B
Retailer 3
-
$3,478 NZD
$1,960 USD
View
B
Retailer 4
-
$3,581 NZD
$2,018 USD
View
Final sale: no returns
Retailer 5
-
$3,708 NZD
$2,090 USD
View
Price last confirmed 20 days ago
B
Retailer 6
-
$3,708 NZD
$2,090 USD
View
B
Retailer 7
-
$4,010 NZD
$2,260 USD
View
B
Retailer 8
-
$4,249 NZD
$2,395 USD
View
Retailer 9
-
$5,208 NZD
$2,935 USD
View
Price last confirmed 11 days ago
B
Retailer 10
-
$5,626 NZD
$3,171 USD
View
B
Retailer 11
-
$5,814 NZD
$3,277 USD
View
B
Retailer 12
-
$6,237 NZD
$3,515 USD
View
B
Retailer 13
-
$7,761 NZD
£3,444 GBP
View
B
Retailer 14
-
$11,688 NZD
£5,187 GBP
View
Most Expensive
Taylor and Hart
3AOIBQS · Oct 31
$14,324 NZD
$8,073 USD
View
Price under review
14 more retailers have this diamond
Prices start from $3,023 NZDSave up to $8,665 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+
4.21ct Oval
$3,023 NZD