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Oval|Natural|GIA

1.51ct I SI2 Oval Natural Diamond

EX • I/SI2 • GIA 1555356497

Certificate GIA 1555356497

Diamond specifications and retailer prices

From $3,952 NZD
HK$17,400 HKD
As of November 1, 2026
Save $6,687 NZD (63%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $10,639 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555356497. Listed at 12 retailers as of October 30, 2026, with prices from $3,952 to $10,639, a $6,687 spread on the same certified stone. NZ Jewellers lists it at $10,639. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555356497
Dimensions9.57 × 6.34 × 3.99 mm
L/W Ratio1.51
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
9.57 mm6.34 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555356497
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.9%

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: Nov 1
Current: $10,639 NZD|Low: $3,906 NZD|High: $10,795 NZD|Avg: $5,790 NZD|-1.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 7$3,952 NZD
Retailer 2$4,039 NZD
Retailer 11$4,698 NZD
Retailer 5$4,964 NZD
Retailer 4$5,000 NZD
Retailer 10$5,089 NZD
Retailer 9$5,286 NZD
Retailer 12$5,481 NZD
Retailer 3$5,494 NZD
Retailer 8$5,871 NZD
Retailer 6$8,511 NZD
NZ Jewellers$10,639 NZD

34 data points across 12 retailers

12 retailers$3,952 NZD to $10,639 NZD

A
Cheapest Retailer
-
$3,952 NZD
HK$17,400 HKD
A
Retailer 2
-
$4,039 NZD
₹216,797 INR
View
A
Retailer 3
-
$4,698 NZD
$2,648 USD
View
Final sale: no returns
A
Retailer 4
-
$4,964 NZD
£2,203 GBP
View
A
Retailer 5
-
$5,000 NZD
$2,818 USD
View
A
Retailer 6
-
$5,089 NZD
$2,868 USD
View
A
Retailer 7
-
$5,286 NZD
$2,979 USD
View
A
Retailer 8
-
$5,481 NZD
$3,089 USD
View
A
Retailer 9
-
$5,494 NZD
SGD 4,184 SGD
View
A
Retailer 10
-
$5,871 NZD
$3,309 USD
View
A
Retailer 11
-
$8,511 NZD
£3,777 GBP
View
Most Expensive
B+
NZ Jewellers
df3f3558-a934-4f9b-8a24-f837e4552cf4 · Oct 30
$10,639 NZD
$5,996 USD
View
11 more retailers have this diamond
Prices start from $3,952 NZDSave up to $6,687 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
$3,952 NZD