Round|Natural|GIA

0.51ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7546006172

Certificate GIA 7546006172

Diamond specifications and retailer prices

From $364 USD
₹34,689 INR
As of October 23, 2026
Save $301 USD (45%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,135 USD 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
Color
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: $1,135 USD|Low: $364 USD|High: $1,172 USD|Avg: $606 USD|-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$364 USD
Retailer 4$422 USD
Retailer 8$442 USD
Retailer 5$478 USD
Retailer 11$517 USD
Retailer 9$522 USD
Retailer 13$565 USD
Retailer 2$591 USD
Retailer 6$625 USD
Retailer 12$633 USD
Retailer 10$666 USD
Retailer 3$690 USD
Retailer 15$746 USD
Retailer 7$949 USD
MOH London$1,135 USD

22 data points across 15 retailers

17 retailers$364 USD to $666 USD

A
Cheapest Retailer
-
$364 USD
₹34,689 INR
A
Retailer 2
-
$422 USD
HK$3,300 HKD
View
A
Retailer 3
-
$478 USD
View
A
Retailer 4
-
$517 USD
SGD 698 SGD
View
A
Retailer 5
-
$522 USD
View
A
Retailer 6
-
$565 USD
£445 GBP
View
A
Retailer 7
-
$581 USD
View
Price last confirmed 30 days ago
A
Retailer 8
-
$591 USD
£465 GBP
View
B
Retailer 9
-
$594 USD
SGD 803 SGD
View
A
Retailer 10
-
$625 USD
View
Price last confirmed 10 days ago
A
Retailer 11
-
$633 USD
£499 GBP
View
A
Retailer 12
-
$666 USD
€634 EUR
View
A
Retailer 13
-
$690 USD
View
Price last confirmed 6 days ago
B+
Retailer 14
-
$746 USD
ZAR 12,057 ZAR
View
Price last confirmed 8 days ago
B+
Retailer 15
-
$795 USD
A$1,223 AUD
View
Price last confirmed 27 days ago
B
Retailer 16
-
$949 USD
View
Price last confirmed 15 days ago
Most Expensive
B
MOH London
CAD833059 · Oct 21
$1,135 USD
£894 GBP
View
Price last confirmed 8 days ago
16 more retailers have this diamond
Prices start from $364 USDSave up to $301 USD

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
$364 USD