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Oval|Natural|GIA

1.51ct H SI1 Oval Natural Diamond

GD • H/SI1 • GIA 5436230726

Certificate GIA 5436230726

Diamond specifications and retailer prices

From $10,175 NZD
HK$44,800 HKD
As of November 1, 2026
Save $12,982 NZD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $23,156 NZD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5436230726. Listed at 19 retailers as of October 30, 2026, with prices from $10,175 to $23,156, a $12,982 spread on the same certified stone. NZ Jewellers lists it at $23,156. 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

1.51
Carat
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5436230726
Dimensions8.65 × 6.39 × 3.97 mm
L/W Ratio1.35
Top View
8.65 mm6.39 mm1.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5436230726
Side View
Table 58.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 62.1%

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: Nov 1
Current: $15,124 NZD|Low: $9,677 NZD|High: $19,528 NZD|Avg: $13,912 NZD|+2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 7$10,175 NZD
Retailer 11$10,814 NZD
Retailer 2$11,579 NZD
Retailer 9$11,586 NZD
Retailer 3$12,736 NZD
Retailer 4$13,053 NZD
Retailer 10$13,349 NZD
Retailer 1$15,124 NZD
Retailer 8$15,255 NZD
Retailer 6$17,011 NZD
Retailer 5$19,296 NZD

42 data points across 11 retailers

19 retailers$10,175 NZD to $23,156 NZD

B+
Cheapest Retailer
-
$10,175 NZD
HK$44,800 HKD
B+
Retailer 2
-
$10,814 NZD
$6,095 USD
View
B
Retailer 3
-
$11,579 NZD
$6,526 USD
View
B
Retailer 4
-
$11,579 NZD
$6,526 USD
View
Final sale: no returns
B+
Retailer 5
-
$11,586 NZD
$6,530 USD
View
B
Retailer 6
-
$11,675 NZD
$6,580 USD
View
B
Retailer 7
-
$12,543 NZD
$7,069 USD
View
B
Retailer 8
-
$12,736 NZD
$7,178 USD
View
B
Retailer 9
-
$13,053 NZD
£5,793 GBP
View
Retailer 10
-
$13,349 NZD
A$11,574 AUD
View
Price last confirmed 11 days ago
B
Retailer 11
-
$13,730 NZD
$7,738 USD
View
B
Retailer 12
-
$13,893 NZD
$7,830 USD
View
B
Retailer 13
-
$13,893 NZD
$7,830 USD
View
B
Retailer 14
-
$14,354 NZD
$8,090 USD
View
B
Retailer 15
-
$14,473 NZD
$8,157 USD
View
B
Retailer 16
-
$15,124 NZD
€8,118 EUR
View
B
Retailer 17
-
$17,011 NZD
ZAR 154,887 ZAR
View
B
Retailer 18
-
$19,296 NZD
£8,563 GBP
View
Most Expensive
C
NZ Jewellers
085bec04-f988-43f7-91dc-f6504d0faaee · Oct 30
$23,156 NZD
$13,051 USD
View
18 more retailers have this diamond
Prices start from $10,175 NZDSave up to $12,982 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+
1.51ct Oval
$10,175 NZD