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Marquise|Natural|GIA

0.51ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 7561357790

Certificate GIA 7561357790

Diamond specifications and retailer prices

From $1,007 CAD
$721 USD
As of November 1, 2026
Save $841 CAD (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,160 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 H 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 7561357790. Listed at 8 retailers as of October 26, 2026, with a 84% 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
H
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7561357790
Dimensions8.40 × 3.75 × 2.37 mm
L/W Ratio2.24
Girdle conditionMedium
Key to symbols
Crystal, Feather
Top View
8.40 mm3.75 mm0.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7561357790
Side View
Table 59.0%CrownGirdlePavilionCulet: NoneDepth 63.2%

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 1
Current: $3,160 CAD|Low: $1,007 CAD|High: $3,238 CAD|Avg: $1,594 CAD|-2.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 5$1,007 CAD
Retailer 7$1,046 CAD
Retailer 6$1,211 CAD
Retailer 2$1,237 CAD
Retailer 4$1,257 CAD
Retailer 8$1,552 CAD
Retailer 3$1,849 CAD
NZ Jewellers$3,160 CAD

34 data points across 8 retailers

8 retailers$1,007 CAD to $1,849 CAD

B+
Cheapest Retailer
-
$1,007 CAD
$721 USD
B+
Retailer 2
-
$1,046 CAD
$749 USD
View
B
Retailer 3
-
$1,211 CAD
$867 USD
View
B
Retailer 4
-
$1,237 CAD
£697 GBP
View
B+
Retailer 5
-
$1,257 CAD
$900 USD
View
Retailer 6
-
$1,552 CAD
A$1,710 AUD
View
Price last confirmed 29 days ago
B
Retailer 7
-
$1,849 CAD
£1,042 GBP
View
Most Expensive
NZ Jewellers
17944225-a233-4843-b962-dbb1a71b26e5 · Oct 30
$3,160 CAD
$2,262 USD
View
Price under review
7 more retailers have this diamond
Prices start from $1,007 CADSave up to $841 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.

B+
0.51ct Marquise
$1,007 CAD