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Marquise|Natural|IGI

0.51ct I SI2 Marquise Natural Diamond

GD • I/SI2 • IGI 649481398

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 649481398

Diamond specifications and retailer prices

From HK$3,158 HKD
As of November 5, 2026
Save HK$8,950 HKD (74%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$12,109 HKD at NZ Jewellers · As of November 5, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by IGI 649481398. Listed at 13 retailers as of November 5, 2026, with prices from HK$3,158 to HK$12,109, a HK$8,950 spread on the same certified stone. NZ Jewellers lists it at HK$12,109. 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
I
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.2°
Pavilion angle36.7°
OriginNatural
Grading LabIGI
CertificateIGI 649481398
Dimensions9.00 × 4.02 × 2.32 mm
L/W Ratio2.24
Girdle conditionFaceted
Culet sizePointed
Top View
9.00 mm4.02 mm0.51 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 649481398
Side View
Table 64.0%Crown 38.2°Girdle: STK-VTKPavilion 36.7°Culet: NoneDepth 57.7%

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: Nov 5
Current: HK$12,109 HKD|Low: HK$3,158 HKD|High: HK$12,109 HKD|Avg: HK$4,817 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 3HK$3,158 HKD
Retailer 9HK$3,292 HKD
Retailer 4HK$3,401 HKD
Retailer 10HK$3,401 HKD
Retailer 12HK$3,448 HKD
Retailer 14HK$3,644 HKD
Retailer 2HK$3,746 HKD
Retailer 5HK$4,177 HKD
Retailer 11HK$4,381 HKD
Retailer 13HK$4,412 HKD
Retailer 6HK$4,742 HKD
Retailer 7HK$5,682 HKD
Retailer 8HK$7,281 HKD
NZ JewellersHK$12,109 HKD

42 data points across 14 retailers

13 retailersHK$3,158 HKD to HK$12,109 HKD

Retailer 1
-
HK$3,158 HKD
Price last confirmed 53 days ago
B+
Retailer 2
-
HK$3,158 HKD
View
B+
Retailer 3
-
HK$3,292 HKD
View
Retailer 4
-
HK$3,401 HKD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
HK$3,401 HKD
View
B+
Retailer 6
-
HK$3,644 HKD
View
B+
Retailer 7
-
HK$3,746 HKD
View
B+
Retailer 8
-
HK$4,177 HKD
View
B+
Retailer 9
-
HK$4,381 HKD
View
B+
Retailer 10
-
HK$4,412 HKD
View
B
Retailer 11
-
HK$5,682 HKD
View
B
Retailer 12
-
HK$7,281 HKD
View
Most Expensive
C
NZ Jewellers
dc731d7a-b765-4572-94a9-9777cff5c7f0 · Nov 5
HK$12,109 HKD
$1,545 USD
View
12 more retailers have this diamond
Prices start from HK$3,158 HKDSave up to HK$8,950 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$3,158 HKD