Oval|Natural|GIA

1.51ct D SI1 Oval Natural Diamond

ID • D/SI1 • GIA 7548154942

Certificate GIA 7548154942

Diamond specifications and retailer prices

From $13,567 NZD
As of November 5, 2026
Save $1,667 NZD (11%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $22,522 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 D 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 7548154942. Listed at 10 retailers as of November 5, 2026, with a relatively tight 12% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40.36°
Pavilion angle39.7°
OriginNatural
Grading LabGIA
CertificateGIA 7548154942
Dimensions8.58 × 6.28 × 4.13 mm
L/W Ratio1.37
Girdle conditionVery Thick
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
8.58 mm6.28 mm1.51 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7548154942
Side View
Table 57.0%Crown 40.36°Girdle: ThickPavilion 39.7°Culet: NoneDepth 65.8%

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 5
Current: $22,522 NZD|Low: $11,823 NZD|High: $24,120 NZD|Avg: $15,469 NZD|-6.6%
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 6, 2026
Retailer 9$11,823 NZD
Retailer 10$12,438 NZD
Retailer 5$12,636 NZD
Retailer 8$13,466 NZD
Retailer 12$13,466 NZD
Retailer 11$13,567 NZD
Retailer 6$13,674 NZD
Retailer 4$14,797 NZD
Retailer 2$15,234 NZD
Retailer 3$15,833 NZD
Retailer 7$18,867 NZD
NZ Jewellers$22,522 NZD

38 data points across 12 retailers

10 retailers$13,567 NZD to $15,234 NZD

Retailer 1
-
$11,823 NZD
Price last confirmed 7 days ago
Retailer 2
-
$12,438 NZD
View
Price last confirmed 6 days ago
Retailer 3
-
$12,636 NZD
View
Price last confirmed 7 days ago
Retailer 4
-
$13,466 NZD
View
Price last confirmed 8 days ago
Retailer 5
-
$13,466 NZD
View
Price last confirmed 15 days ago
A
Retailer 6
-
$13,567 NZD
View
Retailer 7
-
$13,674 NZD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$15,234 NZD
View
Retailer 9
-
$18,867 NZD
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
e8059cf4-d62c-4dda-8c3f-5f1beaed782e · Oct 30
$22,522 NZD
$12,485 USD
View
Price last confirmed 7 days ago
9 more retailers have this diamond
Prices start from $13,567 NZDSave up to $1,667 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
$13,567 NZD