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Oval|Natural|GIA

1.51ct H SI1 Oval Natural Diamond

GD • H/SI1 • GIA 2566587252

Certificate GIA 2566587252

Diamond specifications and retailer prices

From $7,890 AUD
HK$43,300 HKD
As of November 1, 2026
Save $10,054 AUD (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $17,944 AUD 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2566587252. Listed at 20 retailers as of October 30, 2026, with prices from $7,890 to $17,944, a $10,054 spread on the same certified stone. NZ Jewellers lists it at $17,944. 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
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.21°
Pavilion angle35.59°
OriginNatural
Grading LabGIA
CertificateGIA 2566587252
Dimensions8.83 × 6.26 × 3.98 mm
L/W Ratio1.41
Girdle conditionFaceted
Key to symbols
Cloud, Crystal, Needle
Top View
8.83 mm6.26 mm1.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566587252
Side View
Table 62.0%Crown 43.21°Girdle: STK-VTKPavilion 35.59°Culet: NoneDepth 63.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $17,944 AUD|Low: $7,817 AUD|High: $17,944 AUD|Avg: $11,084 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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 31, 2026
Retailer 2$7,890 AUD
Retailer 4$8,819 AUD
Retailer 11$8,993 AUD
Retailer 5$9,011 AUD
Retailer 8$9,357 AUD
Retailer 7$9,416 AUD
Retailer 12$9,717 AUD
Retailer 10$9,903 AUD
Retailer 16$9,904 AUD
Retailer 15$10,140 AUD
Retailer 3$10,344 AUD
Retailer 17$10,893 AUD
Retailer 9$10,942 AUD
Retailer 13$11,724 AUD
Retailer 14$12,380 AUD
Retailer 18$13,065 AUD
Retailer 19$14,972 AUD
Retailer 6$15,319 AUD
NZ Jewellers$17,944 AUD

18 data points across 19 retailers

20 retailers$7,890 AUD to $17,944 AUD

B+
Cheapest Retailer
-
$7,890 AUD
HK$43,300 HKD
B+
Retailer 2
-
$8,819 AUD
$6,195 USD
View
Retailer 3
-
$8,993 AUD
SGD 8,537 SGD
View
Price last confirmed 18 days ago
Retailer 4
-
$9,011 AUD
$6,330 USD
View
Price last confirmed 14 days ago
B
Retailer 5
-
$9,253 AUD
SGD 8,783 SGD
View
B
Retailer 6
-
$9,357 AUD
$6,573 USD
View
B
Retailer 7
-
$9,416 AUD
$6,614 USD
View
B
Retailer 8
-
$9,717 AUD
£5,375 GBP
View
B
Retailer 9
-
$9,903 AUD
$6,956 USD
View
Final sale: no returns
B
Retailer 10
-
$9,904 AUD
$6,957 USD
View
B
Retailer 11
-
$10,140 AUD
£5,609 GBP
View
Retailer 12
-
$10,344 AUD
View
Price last confirmed 11 days ago
B
Retailer 13
-
$10,893 AUD
$7,652 USD
View
B
Retailer 14
-
$10,942 AUD
$7,686 USD
View
B
Retailer 15
-
$11,724 AUD
€7,843 EUR
View
B
Retailer 16
-
$12,380 AUD
$8,696 USD
View
B
Retailer 17
-
$13,065 AUD
ZAR 148,263 ZAR
View
B
Retailer 18
-
$14,972 AUD
£8,281 GBP
View
C
Retailer 19
-
$15,319 AUD
$10,761 USD
View
Most Expensive
C
NZ Jewellers
d5bcc41e-c031-44c4-9f9f-ee524f4ff7bc · Oct 30
$17,944 AUD
$12,605 USD
View
19 more retailers have this diamond
Prices start from $7,890 AUDSave up to $10,054 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.

B+
1.51ct Oval
$7,890 AUD