CaratHunter
Plans
Marquise|Natural|GIA

0.51ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 1555183694

Certificate GIA 1555183694

Diamond specifications and retailer prices

From HK$2,972 HKD
₹36,074 INR
As of November 2, 2026
Save HK$10,484 HKD (78%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$13,456 HKD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555183694. Listed at 18 retailers as of October 30, 2026, with prices from HK$2,972 to HK$13,456, a HK$10,484 spread on the same certified stone. NZ Jewellers lists it at HK$13,456. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1555183694
Dimensions9.37 × 4.07 × 2.42 mm
L/W Ratio2.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal
Top View
9.37 mm4.07 mm0.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1555183694
Side View
Table 61.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 59.5%

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$13,456 HKD|Low: HK$2,972 HKD|High: HK$13,456 HKD|Avg: HK$5,897 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 2, 2026
Retailer 2HK$2,972 HKD
Retailer 4HK$3,954 HKD
Retailer 3HK$4,292 HKD
Retailer 13HK$4,621 HKD
Retailer 14HK$4,621 HKD
Retailer 11HK$4,951 HKD
Retailer 7HK$5,268 HKD
Retailer 9HK$5,418 HKD
Retailer 5HK$5,845 HKD
Retailer 6HK$5,984 HKD
Retailer 8HK$6,385 HKD
Retailer 12HK$6,624 HKD
Retailer 10HK$9,915 HKD
NZ JewellersHK$13,456 HKD

24 data points across 14 retailers

18 retailersHK$2,972 HKD to HK$13,456 HKD

A
Cheapest Retailer
-
HK$2,972 HKD
₹36,074 INR
B+
Retailer 2
-
HK$3,954 HKD
$504 USD
View
Final sale: no returns
A
Retailer 3
-
HK$4,292 HKD
$547 USD
View
Retailer 4
-
HK$4,465 HKD
SGD 769 SGD
View
Price last confirmed 11 days ago
A
Retailer 5
-
HK$4,621 HKD
$589 USD
View
A
Retailer 6
-
HK$4,621 HKD
$589 USD
View
A
Retailer 7
-
HK$4,951 HKD
$631 USD
View
B+
Retailer 8
-
HK$4,951 HKD
$631 USD
View
B+
Retailer 9
-
HK$5,268 HKD
£529 GBP
View
B+
Retailer 10
-
HK$5,382 HKD
$686 USD
View
B+
Retailer 11
-
HK$5,418 HKD
£544 GBP
View
B+
Retailer 12
-
HK$5,845 HKD
$745 USD
View
B+
Retailer 13
-
HK$5,984 HKD
$763 USD
View
B+
Retailer 14
-
HK$6,385 HKD
€775 EUR
View
Retailer 15
-
HK$6,530 HKD
A$1,280 AUD
View
Price last confirmed 29 days ago
B+
Retailer 16
-
HK$6,624 HKD
ZAR 13,639 ZAR
View
B
Retailer 17
-
HK$9,915 HKD
£995 GBP
View
Most Expensive
B
NZ Jewellers
4eef1496-8124-46e6-a1a6-194cfc9e4067 · Oct 30
HK$13,456 HKD
$1,715 USD
View
17 more retailers have this diamond
Prices start from HK$2,972 HKDSave up to HK$10,484 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$2,972 HKD