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Oval|Natural|GIA

0.51ct H I1 Oval Natural Diamond

GD • H/I1 • GIA 6485119251

Certificate GIA 6485119251

Diamond specifications and retailer prices

From $820 AUD
HK$4,500 HKD
As of November 1, 2026
Save $419 AUD (34%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,239 AUD at Yorxs · As of October 31, 2026
View at Yorxs

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded H colour (near-colourless) and I1 clarity (included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6485119251. Listed at 7 retailers as of October 31, 2026, with prices from $820 to $1,239, a $419 spread on the same certified stone. Yorxs lists it at $1,239. 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
H
Colour
I1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6485119251
Dimensions6.43 × 4.53 × 2.83 mm
L/W Ratio1.42
Top View
6.43 mm4.53 mm0.51 ctH / I1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6485119251
Side View
Table 60.0%CrownGirdlePavilionCulet: NoneDepth 62.4%

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: $820 AUD|Low: $675 AUD|High: $1,354 AUD|Avg: $1,012 AUD|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Yorxs
October 31, 2026
Retailer 2$675 AUD
Retailer 1$820 AUD
Retailer 4$839 AUD
Retailer 6$903 AUD
Retailer 3$926 AUD
Retailer 5$967 AUD
Retailer 7$1,015 AUD
Retailer 10$1,137 AUD
Yorxs$1,239 AUD
Retailer 8$1,276 AUD
Retailer 9$1,354 AUD

14 data points across 11 retailers

7 retailers$820 AUD to $1,239 AUD

B+
Cheapest Retailer
-
$820 AUD
HK$4,500 HKD
Retailer 2
-
$839 AUD
$589 USD
View
Price last confirmed 25 days ago
Retailer 3
-
$903 AUD
$634 USD
View
Price last confirmed 25 days ago
Retailer 4
-
$903 AUD
$634 USD
View
Price last confirmed 33 days ago
Retailer 5
-
$967 AUD
$679 USD
View
Price last confirmed 33 days ago
Most Expensive
C
Yorxs
1165F670E · Oct 31
$1,239 AUD
€829 EUR
View
5 more retailers have this diamond
Prices start from $820 AUDSave up to $419 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+
0.51ct Oval
$820 AUD