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Marquise|Natural|GIA

0.51ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 1563006873

Certificate GIA 1563006873

Diamond specifications and retailer prices

From HK$4,051 HKD
₹49,175 INR
As of November 2, 2026
Save HK$8,635 HKD (68%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$18,494 HKD at MOH London · As of November 2, 2026
View at MOH London

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 1563006873. Listed at 13 retailers as of November 1, 2026, with a 213% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 1563006873
Dimensions7.73 × 4.18 × 2.66 mm
L/W Ratio1.85
Culet sizeNone
Top View
7.73 mm4.18 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1563006873
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.6%

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 2
Current: HK$18,494 HKD|Low: HK$4,043 HKD|High: HK$18,494 HKD|Avg: HK$7,446 HKD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 2HK$4,051 HKD
Retailer 5HK$7,291 HKD
Retailer 13HK$8,126 HKD
Retailer 4HK$8,418 HKD
Retailer 7HK$9,007 HKD
Retailer 12HK$9,313 HKD
Retailer 9HK$10,098 HKD
Retailer 11HK$10,631 HKD
Retailer 10HK$10,985 HKD
Retailer 3HK$11,651 HKD
Retailer 6HK$12,395 HKD
Retailer 8HK$12,687 HKD
MOH LondonHK$18,494 HKD

42 data points across 13 retailers

13 retailersHK$4,051 HKD to HK$12,687 HKD

A
Cheapest Retailer
-
HK$4,051 HKD
₹49,175 INR
B+
Retailer 2
-
HK$7,291 HKD
€885 EUR
View
B
Retailer 3
-
HK$8,126 HKD
£816 GBP
View
B
Retailer 4
-
HK$8,418 HKD
ZAR 17,333 ZAR
View
B
Retailer 5
-
HK$9,007 HKD
$1,148 USD
View
B
Retailer 6
-
HK$9,313 HKD
$1,187 USD
View
Final sale: no returns
B
Retailer 7
-
HK$10,098 HKD
$1,287 USD
View
B
Retailer 8
-
HK$10,631 HKD
$1,355 USD
View
B
Retailer 9
-
HK$10,985 HKD
$1,400 USD
View
B
Retailer 10
-
HK$11,651 HKD
$1,485 USD
View
B
Retailer 11
-
HK$12,395 HKD
£1,244 GBP
View
B
Retailer 12
-
HK$12,687 HKD
$1,617 USD
View
Most Expensive
MOH London
EC3822ECD · Nov 2
HK$18,494 HKD
£1,856 GBP
View
Price under review
12 more retailers have this diamond
Prices start from HK$4,051 HKDSave up to HK$8,635 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$4,051 HKD