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Marquise|Natural|GIA

0.51ct K SI2 Marquise Natural Diamond

GD • K/SI2 • GIA 6194969419

Certificate GIA 6194969419

Diamond specifications and retailer prices

From HK$4,467 HKD
As of November 1, 2026
Save HK$7,485 HKD (63%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$16,247 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6194969419. Listed at 12 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6194969419
Dimensions7.54 × 4.39 × 2.65 mm
L/W Ratio1.72
Top View
7.54 mm4.39 mm0.51 ctK / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6194969419
Side View
Table 55.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.4%

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$16,247 HKD|Low: HK$4,467 HKD|High: HK$16,247 HKD|Avg: HK$7,176 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5HK$4,467 HKD
Retailer 7HK$4,695 HKD
Retailer 10HK$4,883 HKD
Retailer 6HK$5,055 HKD
Retailer 9HK$5,055 HKD
Retailer 8HK$5,416 HKD
Retailer 3HK$6,325 HKD
Retailer 2HK$6,913 HKD
Retailer 4HK$11,952 HKD
NZ JewellersHK$16,247 HKD

41 data points across 10 retailers

12 retailersHK$4,467 HKD to HK$11,952 HKD

B+
Cheapest Retailer
-
HK$4,467 HKD
B+
Retailer 2
-
HK$4,695 HKD
View
B+
Retailer 3
-
HK$4,851 HKD
View
B+
Retailer 4
-
HK$4,883 HKD
View
Retailer 5
-
HK$5,055 HKD
View
Price last confirmed 9 days ago
B
Retailer 6
-
HK$5,055 HKD
View
B
Retailer 7
-
HK$5,416 HKD
View
B
Retailer 8
-
HK$5,737 HKD
View
B
Retailer 9
-
HK$6,325 HKD
View
B
Retailer 10
-
HK$6,913 HKD
View
C
Retailer 11
-
HK$11,952 HKD
View
Most Expensive
NZ Jewellers
a755aec9-ce16-4e04-8139-e7b5f382ec80 · Nov 5
HK$16,247 HKD
$2,073 USD
View
Price under review
11 more retailers have this diamond
Prices start from HK$4,467 HKDSave up to HK$7,485 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 Marquise
HK$4,467 HKD