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Oval|Natural|GIA

1.51ct E SI1 Oval Natural Diamond

EX • E/SI1 • GIA 1553875487

Certificate GIA 1553875487

Diamond specifications and retailer prices

From $11,333 NZD
HK$49,900 HKD
As of October 30, 2026
Save $14,584 NZD (56%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $25,917 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553875487. Listed at 11 retailers as of October 30, 2026, with prices from $11,333 to $25,917, a $14,584 spread on the same certified stone. NZ Jewellers lists it at $25,917. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553875487
Dimensions8.86 × 6.19 × 4.02 mm
L/W Ratio1.43
Key to symbols
Crystal, Feather, Needle
Top View
8.86 mm6.19 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553875487
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.0%

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 30
Current: $25,917 NZD|Low: $11,333 NZD|High: $26,984 NZD|Avg: $16,105 NZD|-4.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 10$11,333 NZD
Retailer 7$12,633 NZD
Retailer 2$12,773 NZD
Retailer 3$13,400 NZD
Retailer 11$13,708 NZD
Retailer 4$14,542 NZD
Retailer 8$15,497 NZD
Retailer 9$15,734 NZD
Retailer 6$16,830 NZD
Retailer 5$21,711 NZD
NZ Jewellers$25,917 NZD

34 data points across 11 retailers

11 retailers$11,333 NZD to $25,917 NZD

A
Cheapest Retailer
-
$11,333 NZD
HK$49,900 HKD
A
Retailer 2
-
$12,633 NZD
$7,120 USD
View
A
Retailer 3
-
$12,773 NZD
€6,856 EUR
View
Retailer 4
-
$13,400 NZD
SGD 10,206 SGD
View
Price last confirmed 18 days ago
B+
Retailer 5
-
$13,708 NZD
$7,726 USD
View
B+
Retailer 6
-
$14,542 NZD
£6,454 GBP
View
B+
Retailer 7
-
$15,497 NZD
$8,734 USD
View
B+
Retailer 8
-
$15,734 NZD
$8,868 USD
View
B+
Retailer 9
-
$16,830 NZD
€9,034 EUR
View
B
Retailer 10
-
$21,711 NZD
£9,635 GBP
View
Most Expensive
B
NZ Jewellers
03eb7318-4dbf-444e-9944-c8b39e425396 · Oct 30
$25,917 NZD
$14,607 USD
View
10 more retailers have this diamond
Prices start from $11,333 NZDSave up to $14,584 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
$11,333 NZD