CaratHunter
Plans
Marquise|Natural|GIA

0.51ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 1443043252

Certificate GIA 1443043252

Diamond specifications and retailer prices

From HK$2,171 HKD
As of November 6, 2026
Save HK$3,055 HKD (58%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: HK$5,226 HKD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1443043252. Listed at 3 retailers as of November 6, 2026, with prices from HK$2,171 to HK$5,226, a HK$3,055 spread on the same certified stone. 77 Diamonds lists it at HK$5,226. 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
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1443043252
Dimensions7.56 × 4.23 × 2.75 mm
L/W Ratio1.79
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
7.56 mm4.23 mm0.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1443043252
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.0%

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: HK$5,226 HKD|Low: HK$2,171 HKD|High: HK$5,293 HKD|Avg: HK$3,905 HKD|+1.2%
77 Diamonds
Retailer 2
Retailer 3
November 6, 2026
Retailer 2HK$2,171 HKD
Retailer 3HK$4,248 HKD
77 DiamondsHK$5,226 HKD

42 data points across 3 retailers

3 retailersHK$2,171 HKD to HK$5,226 HKD

A
Cheapest Retailer
-
HK$2,171 HKD
B+
Retailer 2
-
HK$4,248 HKD
View
Most Expensive
B+
77 Diamonds
MQCPJYQSWAYU · Nov 6
HK$5,226 HKD
£525 GBP
View
2 more retailers have this diamond
Prices start from HK$2,171 HKDSave up to HK$3,055 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.

A
0.51ct Marquise
HK$2,171 HKD