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Oval|Natural|GIA

0.51ct D SI1 Oval Natural Diamond

GD • D/SI1 • GIA 2528947522

Certificate GIA 2528947522

Diamond specifications and retailer prices

From $856 AUD
HK$4,700 HKD
As of October 30, 2026
Save $1,225 AUD (59%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,227 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2528947522. Listed at 20 retailers as of October 30, 2026, with a 143% 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

0.51
Carat
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2528947522
Dimensions6.65 × 4.45 × 2.70 mm
L/W Ratio1.49
Top View
6.65 mm4.45 mm0.51 ctD / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2528947522
Side View
Table 57.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 60.8%

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: Oct 30
Current: $2,081 AUD|Low: $856 AUD|High: $2,094 AUD|Avg: $1,336 AUD|+9.2%
Retailer 1
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
November 1, 2026
Retailer 5$856 AUD
Retailer 10$863 AUD
Retailer 8$1,039 AUD
Retailer 16$1,049 AUD
Retailer 3$1,153 AUD
Retailer 6$1,201 AUD
Retailer 4$1,311 AUD
Retailer 14$1,325 AUD
Retailer 9$1,367 AUD
Retailer 15$1,374 AUD
Retailer 13$1,399 AUD
Retailer 2$1,532 AUD
Retailer 7$1,549 AUD
Retailer 11$1,608 AUD
Retailer 12$1,754 AUD
Retailer 1$2,081 AUD

33 data points across 16 retailers

20 retailers$856 AUD to $2,081 AUD

A
Cheapest Retailer
-
$856 AUD
HK$4,700 HKD
A
Retailer 2
-
$863 AUD
₹57,749 INR
View
Retailer 3
-
$1,029 AUD
$723 USD
View
Price last confirmed 30 days ago
Retailer 4
-
$1,039 AUD
$730 USD
View
Price last confirmed 33 days ago
B+
Retailer 5
-
$1,049 AUD
$737 USD
View
Final sale: no returns
Retailer 6
-
$1,069 AUD
$751 USD
View
Price last confirmed 32 days ago
B+
Retailer 7
-
$1,153 AUD
$810 USD
View
Retailer 8
-
$1,187 AUD
$834 USD
View
Price last confirmed 32 days ago
B+
Retailer 9
-
$1,201 AUD
SGD 1,140 SGD
View
B
Retailer 10
-
$1,311 AUD
$921 USD
View
B
Retailer 11
-
$1,325 AUD
$931 USD
View
B
Retailer 12
-
$1,367 AUD
£756 GBP
View
B
Retailer 13
-
$1,374 AUD
$965 USD
View
B
Retailer 14
-
$1,399 AUD
£774 GBP
View
B
Retailer 15
-
$1,532 AUD
$1,076 USD
View
Retailer 16
-
$1,549 AUD
View
Price last confirmed 29 days ago
B
Retailer 17
-
$1,608 AUD
€1,076 EUR
View
B
Retailer 18
-
$1,754 AUD
ZAR 19,909 ZAR
View
B
Retailer 19
-
$2,081 AUD
£1,151 GBP
View
Most Expensive
NZ Jewellers
832d887b-63a4-4071-9fb7-a2c8f5ad3a4b · Sep 30
$3,227 AUD
$2,267 USD
View
Price last confirmed 31 days ago
19 more retailers have this diamond
Prices start from $856 AUDSave up to $1,225 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
0.51ct Oval
$856 AUD