Oval|Natural|GIA

1.51ct D SI2 Oval Natural Diamond

VG • D/SI2 • GIA 6515380729

Certificate GIA 6515380729

Diamond specifications and retailer prices

From $11,810 NZD
$6,656 USD
As of October 30, 2026
Save $9,023 NZD (43%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $25,000 NZD at NZ Jewellers · As of October 20, 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 SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6515380729. Listed at 26 retailers as of October 30, 2026, with a 76% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle41.62°
Pavilion angle38.67°
OriginNatural
Grading LabGIA
CertificateGIA 6515380729
Dimensions8.90 × 6.29 × 3.98 mm
L/W Ratio1.41
Top View
8.90 mm6.29 mm1.51 ctD / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6515380729
Side View
Table 56.0%Crown 41.62°Girdle: MED-THKPavilion 38.67°Culet: NoneDepth 63.2%

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: $20,832 NZD|Low: $11,879 NZD|High: $21,082 NZD|Avg: $15,851 NZD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 7$11,879 NZD
Retailer 8$12,498 NZD
Retailer 6$12,500 NZD
Retailer 2$14,085 NZD
Retailer 3$14,112 NZD
Retailer 4$16,333 NZD
Retailer 5$20,641 NZD
Retailer 1$20,832 NZD

38 data points across 8 retailers

26 retailers$11,810 NZD to $20,832 NZD

A
Cheapest Retailer
-
$11,810 NZD
$6,656 USD
A
Retailer 2
-
$11,879 NZD
$6,695 USD
View
A
Retailer 3
-
$12,498 NZD
$7,044 USD
View
Final sale: no returns
A
Retailer 4
-
$12,500 NZD
$7,045 USD
View
Retailer 5
-
$12,500 NZD
$7,045 USD
View
Price last confirmed 16 days ago
A
Retailer 6
-
$12,605 NZD
$7,104 USD
View
B+
Retailer 7
-
$13,313 NZD
$7,503 USD
View
Retailer 8
-
$13,541 NZD
$7,632 USD
View
Price last confirmed 24 days ago
Retailer 9
-
$13,541 NZD
$7,632 USD
View
Price last confirmed 10 days ago
Retailer 10
-
$13,541 NZD
$7,632 USD
View
Price last confirmed 41 days ago
Retailer 11
-
$13,751 NZD
$7,750 USD
View
Price last confirmed 32 days ago
B+
Retailer 12
-
$14,085 NZD
£6,251 GBP
View
B+
Retailer 13
-
$14,112 NZD
£6,263 GBP
View
B+
Retailer 14
-
$14,372 NZD
$8,100 USD
View
B+
Retailer 15
-
$14,372 NZD
$8,100 USD
View
B+
Retailer 16
-
$14,851 NZD
$8,370 USD
View
Retailer 17
-
$15,624 NZD
$8,806 USD
View
Price last confirmed 23 days ago
Retailer 18
-
$15,624 NZD
$8,806 USD
View
Price last confirmed 41 days ago
Retailer 19
-
$15,624 NZD
$8,806 USD
View
Price last confirmed 11 days ago
B+
Retailer 20
-
$15,624 NZD
$8,806 USD
View
B+
Retailer 21
-
$16,333 NZD
€8,767 EUR
View
B
Retailer 22
-
$20,641 NZD
£9,160 GBP
View
B
Retailer 23
-
$20,832 NZD
£9,245 GBP
View
Retailer 24
-
$25,000 NZD
$14,090 USD
View
Price last confirmed 32 days ago
Retailer 25
-
$25,000 NZD
$14,090 USD
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
1433cd66-f0c9-4862-879f-4bd631812f65 · Oct 20
$25,000 NZD
$14,090 USD
View
Price last confirmed 11 days ago
25 more retailers have this diamond
Prices start from $11,810 NZDSave up to $9,023 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
$11,810 NZD