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Marquise|Natural|IGI

0.51ct G SI2 Marquise Natural Diamond

VG • G/SI2 • IGI 823661666

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 823661666

Diamond specifications and retailer prices

From HK$5,286 HKD
£531 GBP
As of October 28, 2026
Save HK$8,515 HKD (62%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$13,801 HKD at NZ Jewellers · As of October 27, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 823661666. Listed at 8 retailers as of October 27, 2026, with prices from HK$5,286 to HK$13,801, a HK$8,515 spread on the same certified stone. NZ Jewellers lists it at HK$13,801. 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
G
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.2°
Pavilion angle39.4°
OriginNatural
Grading LabIGI
CertificateIGI 823661666
Dimensions7.88 × 4.18 × 2.58 mm
L/W Ratio1.89
Girdle conditionFaceted
Culet sizeNone
Top View
7.88 mm4.18 mm0.51 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 823661666
Side View
Table 62.0%Crown 34.2°Girdle: STK-VTKPavilion 39.4°Culet: NoneDepth 61.7%

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: Oct 28
Current: HK$13,801 HKD|Low: HK$4,402 HKD|High: HK$13,801 HKD|Avg: HK$6,896 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 28, 2026
Retailer 6HK$4,402 HKD
Retailer 5HK$4,739 HKD
Retailer 3HK$5,286 HKD
Retailer 8HK$5,367 HKD
Retailer 2HK$6,171 HKD
Retailer 7HK$6,523 HKD
Retailer 4HK$10,184 HKD
NZ JewellersHK$13,801 HKD

20 data points across 8 retailers

8 retailersHK$5,286 HKD to HK$13,801 HKD

Retailer 1
-
HK$4,402 HKD
$561 USD
Price last confirmed 7 days ago
Retailer 2
-
HK$4,739 HKD
$604 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
HK$5,286 HKD
£531 GBP
View
B+
Retailer 4
-
HK$5,367 HKD
$684 USD
View
B+
Retailer 5
-
HK$6,171 HKD
€749 EUR
View
B+
Retailer 6
-
HK$6,523 HKD
$831 USD
View
B
Retailer 7
-
HK$10,184 HKD
£1,022 GBP
View
Price last confirmed 7 days ago
Most Expensive
C
NZ Jewellers
68d5679f-f56e-440c-93f2-a3585682d507 · Oct 27
HK$13,801 HKD
$1,759 USD
View
7 more retailers have this diamond
Prices start from HK$5,286 HKDSave up to HK$8,515 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$5,286 HKD