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Marquise|Natural|GIA

0.51ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 2243023239

Certificate GIA 2243023239

Diamond specifications and retailer prices

From HK$4,009 HKD
$511 USD
As of November 2, 2026
Save HK$6,543 HKD (62%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$17,975 HKD at NZ Jewellers · As of November 3, 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 J 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 2243023239. Listed at 15 retailers as of October 29, 2026, with a 163% 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
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.36°
Pavilion angle37.42°
OriginNatural
Grading LabGIA
CertificateGIA 2243023239
Dimensions7.70 × 4.16 × 2.54 mm
L/W Ratio1.85
Culet sizeNone
Top View
7.70 mm4.16 mm0.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2243023239
Side View
Table 56.0%Crown 38.36°Girdle: STK-VTKPavilion 37.42°Culet: NoneDepth 61.1%

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$17,975 HKD|Low: HK$3,397 HKD|High: HK$17,975 HKD|Avg: HK$7,232 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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 3, 2026
Retailer 9HK$3,397 HKD
Retailer 8HK$4,661 HKD
Retailer 7HK$4,990 HKD
Retailer 4HK$5,100 HKD
Retailer 10HK$5,116 HKD
Retailer 15HK$5,194 HKD
Retailer 18HK$5,194 HKD
Retailer 5HK$5,320 HKD
Retailer 16HK$5,602 HKD
Retailer 6HK$5,994 HKD
Retailer 3HK$6,630 HKD
Retailer 2HK$6,877 HKD
Retailer 17HK$6,882 HKD
Retailer 11HK$8,140 HKD
Retailer 12HK$8,847 HKD
Retailer 13HK$10,552 HKD
Retailer 14HK$16,514 HKD
NZ JewellersHK$17,975 HKD

27 data points across 18 retailers

15 retailersHK$4,009 HKD to HK$10,552 HKD

A
Cheapest Retailer
-
HK$4,009 HKD
$511 USD
B+
Retailer 2
-
HK$5,100 HKD
$650 USD
View
B+
Retailer 3
-
HK$5,194 HKD
$662 USD
View
B+
Retailer 4
-
HK$5,194 HKD
$662 USD
View
B+
Retailer 5
-
HK$5,320 HKD
$678 USD
View
B
Retailer 6
-
HK$5,602 HKD
$714 USD
View
B
Retailer 7
-
HK$5,994 HKD
$764 USD
View
B
Retailer 8
-
HK$6,630 HKD
$845 USD
View
B
Retailer 9
-
HK$6,877 HKD
£690 GBP
View
B
Retailer 10
-
HK$6,882 HKD
$877 USD
View
B
Retailer 11
-
HK$8,140 HKD
€988 EUR
View
B
Retailer 12
-
HK$8,847 HKD
ZAR 18,217 ZAR
View
B
Retailer 13
-
HK$10,552 HKD
£1,059 GBP
View
Retailer 14
-
HK$16,514 HKD
CA$2,923 CAD
View
Price under review
Most Expensive
NZ Jewellers
6e80d1d9-bed5-4791-9044-15335624a7c3 · Nov 3
HK$17,975 HKD
$2,291 USD
View
Price under review
14 more retailers have this diamond
Prices start from HK$4,009 HKDSave up to HK$6,543 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$4,009 HKD