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Round|Natural|GIA

0.51ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7546006172

Certificate GIA 7546006172

Diamond specifications and retailer prices

From $518 AUD
₹34,689 INR
As of October 23, 2026
Save $429 AUD (45%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,614 AUD at MOH London · As of October 21, 2026
View at MOH London

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7546006172. Listed at 17 retailers as of October 23, 2026, with a 83% 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7546006172
Dimensions5.10 × 5.06 × 3.20 mm
L/W Ratio1.01
Key to symbols
Crystal, Cloud
Top View
5.10 mm5.06 mm0.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7546006172
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.9%

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 23
Current: $1,614 AUD|Low: $518 AUD|High: $1,667 AUD|Avg: $862 AUD|-3.1%
MOH London
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
October 24, 2026
Retailer 14$518 AUD
Retailer 4$601 AUD
Retailer 8$628 AUD
Retailer 5$680 AUD
Retailer 11$734 AUD
Retailer 9$742 AUD
Retailer 13$803 AUD
Retailer 2$840 AUD
Retailer 6$889 AUD
Retailer 12$901 AUD
Retailer 10$947 AUD
Retailer 3$981 AUD
Retailer 15$1,061 AUD
Retailer 7$1,349 AUD
MOH London$1,614 AUD

22 data points across 15 retailers

17 retailers$518 AUD to $947 AUD

A
Cheapest Retailer
-
$518 AUD
₹34,689 INR
A
Retailer 2
-
$601 AUD
HK$3,300 HKD
View
A
Retailer 3
-
$680 AUD
$478 USD
View
A
Retailer 4
-
$734 AUD
SGD 698 SGD
View
A
Retailer 5
-
$742 AUD
$522 USD
View
A
Retailer 6
-
$803 AUD
£445 GBP
View
A
Retailer 7
-
$826 AUD
$581 USD
View
Price last confirmed 29 days ago
A
Retailer 8
-
$840 AUD
£465 GBP
View
B
Retailer 9
-
$845 AUD
SGD 803 SGD
View
A
Retailer 10
-
$889 AUD
$625 USD
View
Price last confirmed 10 days ago
A
Retailer 11
-
$901 AUD
£499 GBP
View
A
Retailer 12
-
$947 AUD
€634 EUR
View
A
Retailer 13
-
$981 AUD
$690 USD
View
Price last confirmed 6 days ago
B+
Retailer 14
-
$1,061 AUD
ZAR 12,057 ZAR
View
Price last confirmed 8 days ago
B+
Retailer 15
-
$1,130 AUD
View
Price last confirmed 27 days ago
B
Retailer 16
-
$1,349 AUD
$949 USD
View
Price last confirmed 14 days ago
Most Expensive
B
MOH London
CAD833059 · Oct 21
$1,614 AUD
£894 GBP
View
Price last confirmed 8 days ago
16 more retailers have this diamond
Prices start from $518 AUDSave up to $429 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 Round
$518 AUD