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Oval|Natural|GIA

1.51ct I SI2 Oval Natural Diamond

ID • I/SI2 • GIA 1555553685

Certificate GIA 1555553685

Diamond specifications and retailer prices

From $7,724 NZD
$4,353 USD
As of October 31, 2026
Save $8,941 NZD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $16,664 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 1555553685. Listed at 19 retailers as of October 30, 2026, with prices from $7,724 to $16,664, a $8,941 spread on the same certified stone. NZ Jewellers lists it at $16,664. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle37.83°
OriginNatural
Grading LabGIA
CertificateGIA 1555553685
Dimensions9.39 × 6.15 × 3.91 mm
L/W Ratio1.53
Girdle conditionVery Thick
Key to symbols
Twinning Wisp, Crystal, Feather, Indented Natural, Needle, Natural
Top View
9.39 mm6.15 mm1.51 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1555553685
Side View
Table 63.0%Crown 37.83°Girdle: MED-VTKPavilionCulet: NoneDepth 63.6%

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: $16,664 NZD|Low: $7,637 NZD|High: $16,664 NZD|Avg: $10,094 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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 17$7,700 NZD
Retailer 15$7,724 NZD
Retailer 5$7,871 NZD
Retailer 4$8,332 NZD
Retailer 6$8,401 NZD
Retailer 10$8,938 NZD
Retailer 16$9,026 NZD
Retailer 18$9,026 NZD
Retailer 19$9,026 NZD
Retailer 11$9,487 NZD
Retailer 2$9,718 NZD
Retailer 13$9,720 NZD
Retailer 8$10,114 NZD
Retailer 9$10,114 NZD
Retailer 3$10,415 NZD
Retailer 7$10,451 NZD
Retailer 12$11,271 NZD
Retailer 14$15,954 NZD
NZ Jewellers$16,664 NZD

36 data points across 19 retailers

19 retailers$7,724 NZD to $16,664 NZD

Retailer 1
-
$7,700 NZD
$4,340 USD
Price last confirmed 14 days ago
A
Retailer 2
-
$7,724 NZD
$4,353 USD
View
A
Retailer 3
-
$7,871 NZD
$4,436 USD
View
A
Retailer 4
-
$8,332 NZD
$4,696 USD
View
Final sale: no returns
A
Retailer 5
-
$8,401 NZD
$4,735 USD
View
A
Retailer 6
-
$8,938 NZD
$5,038 USD
View
A
Retailer 7
-
$9,026 NZD
$5,087 USD
View
A
Retailer 8
-
$9,026 NZD
$5,087 USD
View
A
Retailer 9
-
$9,026 NZD
$5,087 USD
View
B+
Retailer 10
-
$9,487 NZD
$5,347 USD
View
B+
Retailer 11
-
$9,718 NZD
£4,313 GBP
View
B+
Retailer 12
-
$9,720 NZD
£4,314 GBP
View
B+
Retailer 13
-
$10,114 NZD
$5,700 USD
View
B+
Retailer 14
-
$10,114 NZD
$5,700 USD
View
B+
Retailer 15
-
$10,415 NZD
$5,870 USD
View
B+
Retailer 16
-
$10,451 NZD
$5,890 USD
View
B+
Retailer 17
-
$11,271 NZD
€6,050 EUR
View
B
Retailer 18
-
$15,954 NZD
£7,080 GBP
View
Most Expensive
B
NZ Jewellers
5043f498-1c39-423c-940e-e73d23376a8c · Oct 30
$16,664 NZD
$9,392 USD
View
18 more retailers have this diamond
Prices start from $7,724 NZDSave up to $8,941 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
$7,724 NZD