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Marquise|Natural|GIA

0.51ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 2547681359

Certificate GIA 2547681359

Diamond specifications and retailer prices

From $769 CAD
HK$4,300 HKD
As of November 1, 2026
Save $1,337 CAD (63%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,860 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 2547681359. Listed at 19 retailers as of November 1, 2026, with a 174% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2547681359
Dimensions8.18 × 4.16 × 2.67 mm
L/W Ratio1.97
Top View
8.18 mm4.16 mm0.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2547681359
Side View
Table 59.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 64.3%

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: $2,107 CAD|Low: $841 CAD|High: $2,131 CAD|Avg: $1,309 CAD|-0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6$841 CAD
Retailer 8$1,082 CAD
Retailer 3$1,115 CAD
Retailer 5$1,174 CAD
Retailer 2$1,222 CAD
Retailer 9$1,315 CAD
Retailer 7$1,372 CAD
Retailer 4$1,408 CAD
Retailer 1$2,107 CAD

43 data points across 9 retailers

19 retailers$769 CAD to $2,107 CAD

A
Cheapest Retailer
-
$769 CAD
HK$4,300 HKD
A
Retailer 2
-
$841 CAD
$602 USD
View
Final sale: no returns
B+
Retailer 3
-
$913 CAD
$653 USD
View
B+
Retailer 4
-
$913 CAD
$653 USD
View
B+
Retailer 5
-
$947 CAD
$678 USD
View
B+
Retailer 6
-
$955 CAD
SGD 924 SGD
View
B+
Retailer 7
-
$1,052 CAD
$753 USD
View
B+
Retailer 8
-
$1,082 CAD
$774 USD
View
B+
Retailer 9
-
$1,097 CAD
$785 USD
View
B+
Retailer 10
-
$1,115 CAD
£628 GBP
View
B
Retailer 11
-
$1,174 CAD
$840 USD
View
B
Retailer 12
-
$1,222 CAD
€833 EUR
View
B+
Retailer 13
-
$1,255 CAD
$898 USD
View
B
Retailer 14
-
$1,278 CAD
$915 USD
View
Price last confirmed 7 days ago
B
Retailer 15
-
$1,315 CAD
$941 USD
View
Retailer 16
-
$1,372 CAD
A$1,510 AUD
View
Price last confirmed 29 days ago
B
Retailer 17
-
$1,408 CAD
ZAR 16,278 ZAR
View
B
Retailer 18
-
$2,107 CAD
£1,187 GBP
View
Most Expensive
NZ Jewellers
8fc8395c-49aa-4154-9434-046bd2f4a0ba · Oct 30
$2,860 CAD
$2,047 USD
View
Price under review
18 more retailers have this diamond
Prices start from $769 CADSave up to $1,337 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
$769 CAD