CaratHunter
Plans
Oval|Natural|GIA

1.51ct D SI2 Oval Natural Diamond

ID • D/SI2 • GIA 2231615608

Certificate GIA 2231615608

Diamond specifications and retailer prices

From $8,449 AUD
$5,935 USD
As of October 30, 2026
Save $10,186 AUD (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $18,635 AUD at NZ Jewellers · As of October 27, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2231615608. Listed at 22 retailers as of October 27, 2026, with prices from $8,449 to $18,635, a $10,186 spread on the same certified stone. NZ Jewellers lists it at $18,635. 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
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40.37°
Pavilion angle39.57°
OriginNatural
Grading LabGIA
CertificateGIA 2231615608
Dimensions8.61 × 6.24 × 4.15 mm
L/W Ratio1.38
Girdle conditionExtremely Thick
Key to symbols
Crystal, Feather, Needle
Top View
8.61 mm6.24 mm1.51 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2231615608
Side View
Table 55.0%Crown 40.37°Girdle: STK-ETKPavilion 39.57°Culet: NoneDepth 66.5%

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: $18,635 AUD|Low: $7,346 AUD|High: $18,635 AUD|Avg: $11,052 AUD
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
October 29, 2026
Retailer 4$8,449 AUD
Retailer 10$8,815 AUD
Retailer 3$9,317 AUD
Retailer 11$9,317 AUD
Retailer 13$10,093 AUD
Retailer 6$10,214 AUD
Retailer 12$10,248 AUD
Retailer 9$10,457 AUD
Retailer 2$10,559 AUD
Retailer 5$11,231 AUD
Retailer 8$11,499 AUD
Retailer 14$11,646 AUD
Retailer 7$15,610 AUD
NZ Jewellers$18,635 AUD

36 data points across 14 retailers

22 retailers$8,449 AUD to $18,635 AUD

A
Cheapest Retailer
-
$8,449 AUD
$5,935 USD
A
Retailer 2
-
$8,630 AUD
$6,062 USD
View
A
Retailer 3
-
$8,804 AUD
$6,184 USD
View
A
Retailer 4
-
$8,815 AUD
$6,192 USD
View
A
Retailer 5
-
$8,925 AUD
$6,269 USD
View
A
Retailer 6
-
$9,317 AUD
$6,545 USD
View
Final sale: no returns
A
Retailer 7
-
$9,317 AUD
$6,545 USD
View
A
Retailer 8
-
$9,921 AUD
$6,969 USD
View
A
Retailer 9
-
$10,093 AUD
$7,090 USD
View
A
Retailer 10
-
$10,214 AUD
View
A
Retailer 11
-
$10,248 AUD
$7,199 USD
View
A
Retailer 12
-
$10,457 AUD
£5,784 GBP
View
B+
Retailer 13
-
$10,467 AUD
$7,353 USD
View
A
Retailer 14
-
$10,559 AUD
£5,840 GBP
View
B+
Retailer 15
-
$11,175 AUD
$7,850 USD
View
B+
Retailer 16
-
$11,175 AUD
$7,850 USD
View
B+
Retailer 17
-
$11,231 AUD
$7,889 USD
View
B+
Retailer 18
-
$11,499 AUD
€7,693 EUR
View
B+
Retailer 19
-
$11,545 AUD
$8,110 USD
View
B+
Retailer 20
-
$11,646 AUD
$8,181 USD
View
B+
Retailer 21
-
$15,610 AUD
£8,634 GBP
View
Most Expensive
B
NZ Jewellers
ff2703fb-317d-4269-8f8b-875e1eded4cb · Oct 27
$18,635 AUD
$13,090 USD
View
21 more retailers have this diamond
Prices start from $8,449 AUDSave up to $10,186 AUD

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
$8,449 AUD