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Oval|Natural|GIA

1.51ct D SI2 Oval Natural Diamond

ID • D/SI2 • GIA 2231615608

Certificate GIA 2231615608

Diamond specifications and retailer prices

From $10,530 NZD
$5,935 USD
As of October 31, 2026
Save $12,695 NZD (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $23,226 NZD at NZ Jewellers · As of October 27, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2231615608. Listed at 22 retailers as of October 27, 2026, with prices from $10,530 to $23,226, a $12,695 spread on the same certified stone. NZ Jewellers lists it at $23,226. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40.37°
Pavilion angle39.57°
OriginNatural
Grading LabGIA
CertificateGIA 2231615608
Dimensions8.61 × 6.24 × 4.15 mm
L/W Ratio1.38
Girdle conditionExtremely Thick
Key to symbols
Crystal, Feather, Needle
Top View
8.61 mm6.24 mm1.51 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2231615608
Side View
Table 55.0%Crown 40.37°Girdle: STK-ETKPavilion 39.57°Culet: NoneDepth 66.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $23,226 NZD|Low: $9,155 NZD|High: $23,226 NZD|Avg: $13,786 NZD
NZ Jewellers
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
October 29, 2026
Retailer 4$10,530 NZD
Retailer 10$10,986 NZD
Retailer 3$11,613 NZD
Retailer 11$11,613 NZD
Retailer 13$12,580 NZD
Retailer 6$12,730 NZD
Retailer 12$12,773 NZD
Retailer 9$13,032 NZD
Retailer 2$13,161 NZD
Retailer 5$13,998 NZD
Retailer 8$14,332 NZD
Retailer 14$14,516 NZD
Retailer 7$19,456 NZD
NZ Jewellers$23,226 NZD

35 data points across 14 retailers

22 retailers$10,530 NZD to $23,226 NZD

A
Cheapest Retailer
-
$10,530 NZD
$5,935 USD
A
Retailer 2
-
$10,756 NZD
$6,062 USD
View
A
Retailer 3
-
$10,972 NZD
$6,184 USD
View
A
Retailer 4
-
$10,986 NZD
$6,192 USD
View
A
Retailer 5
-
$11,123 NZD
$6,269 USD
View
A
Retailer 6
-
$11,613 NZD
$6,545 USD
View
Final sale: no returns
A
Retailer 7
-
$11,613 NZD
$6,545 USD
View
A
Retailer 8
-
$12,365 NZD
$6,969 USD
View
A
Retailer 9
-
$12,580 NZD
$7,090 USD
View
A
Retailer 10
-
$12,730 NZD
A$11,038 AUD
View
A
Retailer 11
-
$12,773 NZD
$7,199 USD
View
A
Retailer 12
-
$13,032 NZD
£5,784 GBP
View
B+
Retailer 13
-
$13,046 NZD
$7,353 USD
View
A
Retailer 14
-
$13,161 NZD
£5,840 GBP
View
B+
Retailer 15
-
$13,928 NZD
$7,850 USD
View
B+
Retailer 16
-
$13,928 NZD
$7,850 USD
View
B+
Retailer 17
-
$13,998 NZD
$7,889 USD
View
B+
Retailer 18
-
$14,332 NZD
€7,693 EUR
View
B+
Retailer 19
-
$14,390 NZD
$8,110 USD
View
B+
Retailer 20
-
$14,516 NZD
$8,181 USD
View
B+
Retailer 21
-
$19,456 NZD
£8,634 GBP
View
Most Expensive
B
NZ Jewellers
ff2703fb-317d-4269-8f8b-875e1eded4cb · Oct 27
$23,226 NZD
$13,090 USD
View
21 more retailers have this diamond
Prices start from $10,530 NZDSave up to $12,695 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.

A
1.51ct Oval
$10,530 NZD