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Marquise|Natural|GIA

0.51ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 7553135928

Certificate GIA 7553135928

Diamond specifications and retailer prices

From HK$7,666 HKD
$977 USD
As of November 1, 2026
Save HK$5,682 HKD (43%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$15,834 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 7553135928. Listed at 13 retailers as of October 31, 2026, with a 74% 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.78°
Pavilion angle42.14°
OriginNatural
Grading LabGIA
CertificateGIA 7553135928
Dimensions8.31 × 4.00 × 2.66 mm
L/W Ratio2.08
Girdle conditionVery Thick
Key to symbols
Feather
Top View
8.31 mm4.00 mm0.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7553135928
Side View
Table 60.0%Crown 38.78°GirdlePavilion 42.14°Culet: NoneDepth 66.4%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
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$15,834 HKD|Low: HK$7,830 HKD|High: HK$21,090 HKD|Avg: HK$11,649 HKD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 8HK$7,830 HKD
Retailer 10HK$7,830 HKD
Retailer 6HK$8,136 HKD
Retailer 9HK$9,039 HKD
Retailer 2HK$9,772 HKD
Retailer 5HK$11,306 HKD
Retailer 3HK$12,119 HKD
Retailer 4HK$13,347 HKD
MOH LondonHK$15,834 HKD
Retailer 7HK$21,090 HKD

43 data points across 10 retailers

13 retailersHK$7,666 HKD to HK$13,347 HKD

B
Cheapest Retailer
-
HK$7,666 HKD
$977 USD
B
Retailer 2
-
HK$7,752 HKD
$988 USD
View
B
Retailer 3
-
HK$7,830 HKD
$998 USD
View
B
Retailer 4
-
HK$7,830 HKD
$998 USD
View
B
Retailer 5
-
HK$8,136 HKD
$1,037 USD
View
B
Retailer 6
-
HK$8,595 HKD
$1,095 USD
View
B
Retailer 7
-
HK$9,039 HKD
$1,152 USD
View
B
Retailer 8
-
HK$9,772 HKD
£981 GBP
View
Retailer 9
-
HK$11,306 HKD
A$2,217 AUD
View
Price last confirmed 28 days ago
B
Retailer 10
-
HK$12,119 HKD
€1,471 EUR
View
B
Retailer 11
-
HK$13,347 HKD
ZAR 27,482 ZAR
View
Most Expensive
MOH London
CF7004367 · Nov 2
HK$15,834 HKD
£1,589 GBP
View
Price under review
11 more retailers have this diamond
Prices start from HK$7,666 HKDSave up to HK$5,682 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$7,666 HKD