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Oval|Natural|GIA

0.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 5516455267

Certificate GIA 5516455267

Diamond specifications and retailer prices

From $846 AUD
₹56,610 INR
As of October 31, 2026
Save $1,983 AUD (70%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,565 AUD at NZ Jewellers · As of October 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5516455267. Listed at 20 retailers as of October 28, 2026, with a 234% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5516455267
Dimensions6.77 × 4.41 × 2.68 mm
L/W Ratio1.54
Top View
6.77 mm4.41 mm0.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5516455267
Side View
Table 60.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 60.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $846 AUD|Low: $797 AUD|High: $2,839 AUD|Avg: $1,432 AUD|-1.3%
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
October 31, 2026
Retailer 1$846 AUD
Retailer 4$1,014 AUD
Retailer 12$1,049 AUD
Retailer 2$1,136 AUD
Retailer 5$1,153 AUD
Retailer 14$1,311 AUD
Retailer 6$1,325 AUD
Retailer 7$1,367 AUD
Retailer 3$1,374 AUD
Retailer 8$1,608 AUD
Retailer 13$1,709 AUD
Retailer 9$1,754 AUD
Retailer 11$2,085 AUD
Retailer 10$2,829 AUD

32 data points across 14 retailers

20 retailers$846 AUD to $2,829 AUD

A
Cheapest Retailer
-
$846 AUD
₹56,610 INR
A
Retailer 2
-
$1,014 AUD
$712 USD
View
B+
Retailer 3
-
$1,049 AUD
$737 USD
View
Final sale: no returns
B+
Retailer 4
-
$1,136 AUD
$798 USD
View
B+
Retailer 5
-
$1,136 AUD
$798 USD
View
B+
Retailer 6
-
$1,153 AUD
$810 USD
View
B+
Retailer 7
-
$1,180 AUD
$829 USD
View
B+
Retailer 8
-
$1,248 AUD
$877 USD
View
B+
Retailer 9
-
$1,311 AUD
$921 USD
View
B+
Retailer 10
-
$1,325 AUD
$931 USD
View
B+
Retailer 11
-
$1,367 AUD
£756 GBP
View
B+
Retailer 12
-
$1,374 AUD
$965 USD
View
Retailer 13
-
$1,412 AUD
£781 GBP
View
Price last confirmed 31 days ago
B+
Retailer 14
-
$1,532 AUD
$1,076 USD
View
B+
Retailer 15
-
$1,608 AUD
€1,076 EUR
View
Retailer 16
-
$1,709 AUD
View
Price last confirmed 28 days ago
B
Retailer 17
-
$1,754 AUD
ZAR 19,909 ZAR
View
B
Retailer 18
-
$2,085 AUD
£1,153 GBP
View
B
Retailer 19
-
$2,829 AUD
£1,565 GBP
View
Most Expensive
NZ Jewellers
806b45fa-fdfa-4fed-8ef1-fa50bf360653 · Oct 30
$3,565 AUD
$2,504 USD
View
Price under review
19 more retailers have this diamond
Prices start from $846 AUDSave up to $1,983 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
$846 AUD