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 $529 CAD
₹36,086 INR
As of November 1, 2026
Save $1,866 CAD (78%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,396 CAD 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 $529 to $2,396, a $1,866 spread on the same certified stone. NZ Jewellers lists it at $2,396. 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
Color
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 1
Current: $2,396 CAD|Low: $529 CAD|High: $2,396 CAD|Avg: $1,061 CAD
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
November 2, 2026
Retailer 9$529 CAD
Retailer 4$704 CAD
Retailer 3$764 CAD
Retailer 15$823 CAD
Retailer 16$823 CAD
Retailer 7$881 CAD
Retailer 12$881 CAD
Retailer 10$938 CAD
Retailer 8$958 CAD
Retailer 2$965 CAD
Retailer 5$1,041 CAD
Retailer 6$1,065 CAD
Retailer 13$1,138 CAD
Retailer 14$1,179 CAD
Retailer 11$1,765 CAD
NZ Jewellers$2,396 CAD

25 data points across 16 retailers

18 retailers$529 CAD to $2,396 CAD

A
Cheapest Retailer
-
$529 CAD
₹36,086 INR
B+
Retailer 2
-
$704 CAD
$504 USD
View
Final sale: no returns
A
Retailer 3
-
$764 CAD
$547 USD
View
Retailer 4
-
$795 CAD
SGD 769 SGD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$823 CAD
$589 USD
View
A
Retailer 6
-
$823 CAD
$589 USD
View
A
Retailer 7
-
$881 CAD
$631 USD
View
B+
Retailer 8
-
$881 CAD
$631 USD
View
B+
Retailer 9
-
$938 CAD
£529 GBP
View
B+
Retailer 10
-
$958 CAD
$686 USD
View
B+
Retailer 11
-
$965 CAD
£544 GBP
View
B+
Retailer 12
-
$1,041 CAD
$745 USD
View
B+
Retailer 13
-
$1,065 CAD
$763 USD
View
B+
Retailer 14
-
$1,138 CAD
€776 EUR
View
Retailer 15
-
$1,163 CAD
A$1,280 AUD
View
Price last confirmed 29 days ago
B+
Retailer 16
-
$1,179 CAD
ZAR 13,639 ZAR
View
B
Retailer 17
-
$1,765 CAD
£995 GBP
View
Most Expensive
B
NZ Jewellers
4eef1496-8124-46e6-a1a6-194cfc9e4067 · Oct 30
$2,396 CAD
$1,715 USD
View
17 more retailers have this diamond
Prices start from $529 CADSave up to $1,866 CAD

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
$529 CAD