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Marquise|Natural|GIA

0.51ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 2564717598

Certificate GIA 2564717598

Diamond specifications and retailer prices

From HK$5,649 HKD
SGD 973 SGD
As of October 31, 2026
Save HK$3,412 HKD (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$9,061 HKD at Frank Darling · As of November 2, 2026
View at Frank Darling

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2564717598. Listed at 9 retailers as of October 31, 2026, with prices from HK$5,649 to HK$9,061, a HK$3,412 spread on the same certified stone. Frank Darling lists it at HK$9,061. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2564717598
Dimensions7.86 × 4.16 × 2.60 mm
L/W Ratio1.89
Culet sizeNone
Top View
7.86 mm4.16 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2564717598
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.7%

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: Oct 31
Current: HK$9,061 HKD|Low: HK$5,649 HKD|High: HK$9,061 HKD|Avg: HK$7,090 HKD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 9HK$5,649 HKD
Retailer 5HK$5,783 HKD
Retailer 6HK$5,916 HKD
Retailer 7HK$6,073 HKD
Retailer 4HK$7,513 HKD
Retailer 2HK$7,785 HKD
Retailer 8HK$8,081 HKD
Retailer 3HK$8,474 HKD
Frank DarlingHK$9,061 HKD

7 data points across 9 retailers

9 retailersHK$5,649 HKD to HK$9,061 HKD

B+
Cheapest Retailer
-
HK$5,649 HKD
SGD 973 SGD
B+
Retailer 2
-
HK$5,783 HKD
SGD 996 SGD
View
B+
Retailer 3
-
HK$5,916 HKD
$754 USD
View
B+
Retailer 4
-
HK$6,073 HKD
$774 USD
View
B
Retailer 5
-
HK$7,513 HKD
$958 USD
View
B
Retailer 6
-
HK$7,785 HKD
€945 EUR
View
B
Retailer 7
-
HK$8,081 HKD
$1,030 USD
View
B
Retailer 8
-
HK$8,474 HKD
$1,080 USD
View
Most Expensive
B
Frank Darling
2709605HK · Nov 2
HK$9,061 HKD
$1,155 USD
View
8 more retailers have this diamond
Prices start from HK$5,649 HKDSave up to HK$3,412 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$5,649 HKD