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Oval|Natural|GIA

1.51ct E SI1 Oval Natural Diamond

EX • E/SI1 • GIA 2516454924

Certificate GIA 2516454924

Diamond specifications and retailer prices

From $12,940 NZD
$7,293 USD
As of October 30, 2026
Save $14,604 NZD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $27,544 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 2516454924. Listed at 16 retailers as of October 30, 2026, with prices from $12,940 to $27,544, a $14,604 spread on the same certified stone. NZ Jewellers lists it at $27,544. 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
Crown angle36.98°
Pavilion angle39.08°
OriginNatural
Grading LabGIA
CertificateGIA 2516454924
Dimensions8.72 × 6.35 × 4.16 mm
L/W Ratio1.37
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
8.72 mm6.35 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2516454924
Side View
Table 63.0%Crown 36.98°Girdle: THK-VTKPavilion 39.08°Culet: NDepth 65.5%

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 30
Current: $15,319 NZD|Low: $12,667 NZD|High: $23,228 NZD|Avg: $15,795 NZD|+0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 10$12,940 NZD
Retailer 11$13,769 NZD
Retailer 9$13,818 NZD
Retailer 2$14,061 NZD
Retailer 4$14,675 NZD
Retailer 12$14,920 NZD
Retailer 1$15,319 NZD
Retailer 7$15,522 NZD
Retailer 3$15,846 NZD
Retailer 6$17,969 NZD
Retailer 8$19,875 NZD
Retailer 5$23,074 NZD

42 data points across 12 retailers

16 retailers$12,940 NZD to $27,544 NZD

A
Cheapest Retailer
-
$12,940 NZD
$7,293 USD
B+
Retailer 2
-
$13,769 NZD
$7,760 USD
View
B+
Retailer 3
-
$13,818 NZD
$7,788 USD
View
Final sale: no returns
B+
Retailer 4
-
$13,820 NZD
$7,789 USD
View
B+
Retailer 5
-
$14,061 NZD
$7,925 USD
View
B+
Retailer 6
-
$14,675 NZD
$8,271 USD
View
B+
Retailer 7
-
$14,920 NZD
$8,409 USD
View
B+
Retailer 8
-
$15,149 NZD
$8,538 USD
View
B+
Retailer 9
-
$15,319 NZD
£6,798 GBP
View
B+
Retailer 10
-
$15,522 NZD
A$13,459 AUD
View
B+
Retailer 11
-
$15,846 NZD
$8,931 USD
View
B
Retailer 12
-
$17,216 NZD
$9,703 USD
View
B
Retailer 13
-
$17,969 NZD
€9,645 EUR
View
Retailer 14
-
$19,875 NZD
ZAR 180,960 ZAR
View
Price last confirmed 8 days ago
B
Retailer 15
-
$23,074 NZD
£10,240 GBP
View
Most Expensive
B
NZ Jewellers
bc228933-8170-4d5c-84b9-6692ffa876f1 · Oct 30
$27,544 NZD
$15,524 USD
View
15 more retailers have this diamond
Prices start from $12,940 NZDSave up to $14,604 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
$12,940 NZD