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Round|Natural|GIA

0.51ct K SI2 Round Natural Diamond

VG • K/SI2 • GIA 6291362550

Certificate GIA 6291362550

Diamond specifications and retailer prices

From HK$2,911 HKD
As of November 1, 2026
Save HK$4,903 HKD (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$12,976 HKD at NZ Jewellers · As of October 30, 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 very-good cut grade and certified by GIA 6291362550. Listed at 14 retailers as of November 1, 2026, with a 168% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
K
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6291362550
Dimensions5.01 × 4.98 × 3.21 mm
L/W Ratio1.01
Top View
5.01 mm4.98 mm0.51 ctK / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6291362550
Side View
Table 57.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 64.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: HK$12,976 HKD|Low: HK$2,408 HKD|High: HK$12,976 HKD|Avg: HK$4,358 HKD|+21.7%
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
Retailer 16
November 2, 2026
Retailer 15HK$2,911 HKD
Retailer 7HK$3,209 HKD
Retailer 16HK$3,389 HKD
Retailer 5HK$3,538 HKD
Retailer 2HK$3,593 HKD
Retailer 4HK$3,648 HKD
Retailer 6HK$3,648 HKD
Retailer 3HK$3,907 HKD
Retailer 12HK$3,907 HKD
Retailer 9HK$4,174 HKD
Retailer 14HK$4,409 HKD
Retailer 8HK$4,589 HKD
Retailer 13HK$4,613 HKD
Retailer 10HK$5,123 HKD
Retailer 11HK$7,814 HKD
NZ JewellersHK$12,976 HKD

26 data points across 16 retailers

14 retailersHK$2,911 HKD to HK$7,814 HKD

B+
Cheapest Retailer
-
HK$2,911 HKD
B+
Retailer 2
-
HK$3,389 HKD
View
Retailer 3
-
HK$3,538 HKD
View
Price last confirmed 10 days ago
B+
Retailer 4
-
HK$3,593 HKD
View
Retailer 5
-
HK$3,648 HKD
View
Price last confirmed 9 days ago
Retailer 6
-
HK$3,648 HKD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
HK$3,907 HKD
View
B+
Retailer 8
-
HK$3,907 HKD
View
B+
Retailer 9
-
HK$4,174 HKD
View
B+
Retailer 10
-
HK$4,409 HKD
View
B
Retailer 11
-
HK$4,613 HKD
View
B
Retailer 12
-
HK$5,123 HKD
View
C
Retailer 13
-
HK$7,814 HKD
View
Most Expensive
NZ Jewellers
dd197ee9-5caf-4acd-8558-c99939f4f2f5 · Oct 30
HK$12,976 HKD
$1,654 USD
View
Price last confirmed 7 days ago
13 more retailers have this diamond
Prices start from HK$2,911 HKDSave up to HK$4,903 HKD

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.

B+
0.51ct Round
HK$2,911 HKD