Round|Natural|GIA

0.51ct K IF Round Natural Diamond

EX • K/IF • GIA 6555679412

Certificate GIA 6555679412

Diamond specifications and retailer prices

From $448 USD
As of November 6, 2026
Save $771 USD (63%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,840 USD at NZ Jewellers · As of September 28, 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 K colour (faint-tinted) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 6555679412. Listed at 13 retailers as of November 4, 2026, with a 172% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
K
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6555679412
Dimensions5.11 × 5.08 × 3.16 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
5.11 mm5.08 mm0.51 ctK / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555679412
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.1%

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: Nov 6
Current: $557 USD|Low: $448 USD|High: $1,371 USD|Avg: $728 USD|-6.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 2$448 USD
Retailer 11$488 USD
Retailer 12$500 USD
Retailer 1$557 USD
Retailer 5$653 USD
Retailer 6$660 USD
Retailer 9$705 USD
Retailer 3$769 USD
Retailer 10$786 USD
Retailer 4$790 USD
Retailer 7$819 USD
Retailer 8$1,219 USD

38 data points across 12 retailers

13 retailers$448 USD to $1,219 USD

A
Cheapest Retailer
-
$448 USD
A
Retailer 2
-
$488 USD
View
Final sale: no returns
A
Retailer 3
-
$500 USD
View
A
Retailer 4
-
$557 USD
View
B+
Retailer 5
-
$653 USD
View
A
Retailer 6
-
$660 USD
View
B+
Retailer 7
-
$705 USD
View
B+
Retailer 8
-
$769 USD
View
B+
Retailer 9
-
$786 USD
View
B+
Retailer 10
-
$819 USD
View
B
Retailer 11
-
$1,219 USD
View
Retailer 12
-
$1,822 USD
View
Price last confirmed 31 days ago
Most Expensive
NZ Jewellers
03587995-2e7b-44ba-a300-74f9a7f87434 · Sep 28
$1,840 USD
View
Price last confirmed 39 days ago
12 more retailers have this diamond
Prices start from $448 USDSave up to $771 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
$448 USD