Round|Natural|GIA

0.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 3335726797

Certificate GIA 3335726797

Diamond specifications and retailer prices

From $419 USD
As of November 6, 2026
Save $348 USD (45%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,794 USD at NZ Jewellers · As of October 20, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3335726797. Listed at 15 retailers as of November 2, 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
K
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3335726797
Dimensions5.12 × 5.11 × 3.18 mm
L/W Ratio1.00
Top View
5.12 mm5.11 mm0.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3335726797
Side View
Table 55.0%CrownGirdle: ThickPavilionCulet: NoneDepth 62.2%

Caratlytics Score

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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: Nov 6
Current: $1,794 USD|Low: $419 USD|High: $1,794 USD|Avg: $760 USD
NZ Jewellers
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
November 6, 2026
Retailer 2$419 USD
Retailer 14$572 USD
Retailer 5$590 USD
Retailer 9$607 USD
Retailer 7$616 USD
Retailer 13$616 USD
Retailer 15$616 USD
Retailer 4$660 USD
Retailer 10$666 USD
Retailer 12$692 USD
Retailer 3$703 USD
Retailer 6$707 USD
Retailer 8$767 USD
Retailer 11$1,328 USD
NZ Jewellers$1,794 USD

39 data points across 15 retailers

15 retailers$419 USD to $767 USD

A
Cheapest Retailer
-
$419 USD
Retailer 2
-
$572 USD
View
Price last confirmed 15 days ago
Retailer 3
-
$590 USD
View
Price last confirmed 30 days ago
Retailer 4
-
$616 USD
View
Price last confirmed 17 days ago
Retailer 5
-
$616 USD
View
Price last confirmed 22 days ago
Retailer 6
-
$616 USD
View
Price last confirmed 21 days ago
Retailer 7
-
$660 USD
View
Price last confirmed 68 days ago
Retailer 8
-
$660 USD
View
Price last confirmed 17 days ago
Retailer 9
-
$666 USD
View
Price last confirmed 15 days ago
Retailer 10
-
$692 USD
View
Price last confirmed 15 days ago
Retailer 11
-
$703 USD
View
Price last confirmed 19 days ago
B+
Retailer 12
-
$767 USD
View
Retailer 13
-
$1,328 USD
View
Price last confirmed 16 days ago
Retailer 14
-
$1,794 USD
View
Price last confirmed 69 days ago
Most Expensive
NZ Jewellers
8f74cdf0-1390-4605-a88a-9cf302843254 · Oct 20
$1,794 USD
View
Price last confirmed 17 days ago
14 more retailers have this diamond
Prices start from $419 USDSave up to $348 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
$419 USD