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Round|Natural|GIA

0.51ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7553393622

Certificate GIA 7553393622

Diamond specifications and retailer prices

From $635 USD
As of October 27, 2026
Save $1,499 USD (70%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $2,134 USD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

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 7553393622. Listed at 24 retailers as of October 27, 2026, with prices from $635 to $2,134, a $1,499 spread on the same certified stone. NZ Jewellers lists it at $2,134. 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
FluorescenceFaint
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7553393622
Dimensions5.08 × 5.10 × 3.21 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Cloud
Top View
5.08 mm5.10 mm0.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7553393622
Side View
Table 55.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.1%

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 27
Current: $909 USD|Low: $474 USD|High: $1,590 USD|Avg: $892 USD|+1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 28, 2026
Retailer 8$474 USD
Retailer 10$664 USD
Retailer 2$722 USD
Retailer 4$805 USD
Retailer 5$830 USD
Retailer 3$885 USD
Retailer 1$909 USD
Retailer 9$1,023 USD
Retailer 6$1,048 USD
Retailer 7$1,580 USD

35 data points across 10 retailers

24 retailers$635 USD to $2,134 USD

A
Cheapest Retailer
-
$635 USD
A
Retailer 2
-
$642 USD
View
Retailer 3
-
$664 USD
View
Price last confirmed 7 days ago
Retailer 4
-
$664 USD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$677 USD
View
B+
Retailer 6
-
$711 USD
View
B+
Retailer 7
-
$722 USD
View
Retailer 8
-
$727 USD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
$754 USD
View
B+
Retailer 10
-
$780 USD
View
B+
Retailer 11
-
$780 USD
View
B+
Retailer 12
-
$805 USD
View
B+
Retailer 13
-
$810 USD
View
B+
Retailer 14
-
$815 USD
View
B+
Retailer 15
-
$830 USD
£654 GBP
View
B+
Retailer 16
-
$862 USD
View
B+
Retailer 17
-
$885 USD
£697 GBP
View
B+
Retailer 18
-
$909 USD
€866 EUR
View
B+
Retailer 19
-
$948 USD
View
Retailer 20
-
$1,023 USD
A$1,574 AUD
View
Price last confirmed 28 days ago
B+
Retailer 21
-
$1,048 USD
ZAR 16,926 ZAR
View
B
Retailer 22
-
$1,580 USD
£1,244 GBP
View
B
Retailer 23
-
$1,955 USD
CA$2,715 CAD
View
Most Expensive
B
NZ Jewellers
345bfcde-ed97-42b4-ac88-7a1a1bb92407 · Oct 27
$2,134 USD
View
23 more retailers have this diamond
Prices start from $635 USDSave up to $1,499 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
$635 USD