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Round|Natural|GIA

0.51ct K SI2 Round Natural Diamond

VG • K/SI2 • GIA 2256287166

Certificate GIA 2256287166

Diamond specifications and retailer prices

From HK$2,809 HKD
As of November 1, 2026
Save HK$4,942 HKD (64%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$12,858 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 2256287166. Listed at 14 retailers as of November 1, 2026, with a 176% 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
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2256287166
Dimensions5.04 × 5.02 × 3.19 mm
L/W Ratio1.00
Top View
5.04 mm5.02 mm0.51 ctK / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2256287166
Side View
Table 60.0%CrownGirdle: ThickPavilionCulet: NoneDepth 63.4%

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$12,858 HKD|Low: HK$2,306 HKD|High: HK$12,858 HKD|Avg: HK$4,291 HKD|+21.9%
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$2,809 HKD
Retailer 7HK$3,177 HKD
Retailer 16HK$3,358 HKD
Retailer 5HK$3,515 HKD
Retailer 2HK$3,562 HKD
Retailer 4HK$3,617 HKD
Retailer 6HK$3,617 HKD
Retailer 3HK$3,868 HKD
Retailer 12HK$3,868 HKD
Retailer 9HK$4,103 HKD
Retailer 14HK$4,378 HKD
Retailer 8HK$4,542 HKD
Retailer 13HK$4,582 HKD
Retailer 10HK$5,084 HKD
Retailer 11HK$7,751 HKD
NZ JewellersHK$12,858 HKD

27 data points across 16 retailers

14 retailersHK$2,809 HKD to HK$7,751 HKD

B+
Cheapest Retailer
-
HK$2,809 HKD
B+
Retailer 2
-
HK$3,358 HKD
View
Retailer 3
-
HK$3,515 HKD
View
Price last confirmed 10 days ago
B+
Retailer 4
-
HK$3,562 HKD
View
Retailer 5
-
HK$3,617 HKD
View
Price last confirmed 9 days ago
Retailer 6
-
HK$3,617 HKD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
HK$3,868 HKD
View
B+
Retailer 8
-
HK$3,868 HKD
View
B+
Retailer 9
-
HK$4,103 HKD
View
B+
Retailer 10
-
HK$4,378 HKD
View
B+
Retailer 11
-
HK$4,582 HKD
View
B+
Retailer 12
-
HK$5,084 HKD
View
C
Retailer 13
-
HK$7,751 HKD
View
Most Expensive
NZ Jewellers
87419fe6-6aae-416c-bd98-9d0f1c3e7582 · Oct 30
HK$12,858 HKD
$1,639 USD
View
Price last confirmed 7 days ago
13 more retailers have this diamond
Prices start from HK$2,809 HKDSave up to HK$4,942 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$2,809 HKD