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Oval|Natural|GIA

0.51ct I SI2 Oval Natural Diamond

GD • I/SI2 • GIA 6542691720

Certificate GIA 6542691720

Diamond specifications and retailer prices

From $363 AUD
₹24,287 INR
As of October 26, 2026
Save $505 AUD (58%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $868 AUD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6542691720. Listed at 7 retailers as of October 26, 2026, with prices from $363 to $868, a $505 spread on the same certified stone. 77 Diamonds lists it at $868. 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
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6542691720
Dimensions5.97 × 4.34 × 2.93 mm
L/W Ratio1.38
Top View
5.97 mm4.34 mm0.51 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6542691720
Side View
Table 57.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.5%

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 26
Current: $868 AUD|Low: $361 AUD|High: $878 AUD|Avg: $549 AUD|+0.7%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 2$363 AUD
Retailer 5$419 AUD
Retailer 3$476 AUD
Retailer 7$498 AUD
Retailer 6$524 AUD
Retailer 4$664 AUD
77 Diamonds$868 AUD

45 data points across 7 retailers

7 retailers$363 AUD to $868 AUD

A
Cheapest Retailer
-
$363 AUD
₹24,287 INR
B+
Retailer 2
-
$419 AUD
HK$2,300 HKD
View
B+
Retailer 3
-
$476 AUD
SGD 452 SGD
View
B+
Retailer 4
-
$498 AUD
$350 USD
View
B+
Retailer 5
-
$524 AUD
SGD 497 SGD
View
B+
Retailer 6
-
$664 AUD
$467 USD
View
Most Expensive
B+
77 Diamonds
OVCPYVAPBXTW · Nov 2
$868 AUD
£480 GBP
View
6 more retailers have this diamond
Prices start from $363 AUDSave up to $505 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
$363 AUD