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Marquise|Natural|GIA

0.51ct H SI1 Marquise Natural Diamond

GD • H/SI1 • GIA 1565217557

Certificate GIA 1565217557

Diamond specifications and retailer prices

From $805 CAD
HK$4,500 HKD
As of October 31, 2026
Save $660 CAD (45%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,464 CAD at With Clarity · As of October 30, 2026
View at With Clarity

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 standard cut grade stated by the retailer rather than the lab and certified by GIA 1565217557. Listed at 8 retailers as of October 30, 2026, with prices from $805 to $1,464, a $660 spread on the same certified stone. With Clarity lists it at $1,464. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1565217557
Dimensions7.94 × 4.09 × 2.63 mm
L/W Ratio1.94
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
7.94 mm4.09 mm0.51 ctH / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1565217557
Side View
Table 58.0%CrownGirdle: ThickPavilionCulet: NoneDepth 64.2%

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: Oct 31
Current: $805 CAD|Low: $787 CAD|High: $1,513 CAD|Avg: $1,144 CAD|-4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
With Clarity
October 31, 2026
Retailer 1$805 CAD
Retailer 2$938 CAD
Retailer 4$1,001 CAD
Retailer 5$1,051 CAD
Retailer 7$1,072 CAD
Retailer 6$1,116 CAD
Retailer 3$1,436 CAD
With Clarity$1,464 CAD

25 data points across 8 retailers

8 retailers$805 CAD to $1,464 CAD

A
Cheapest Retailer
-
$805 CAD
HK$4,500 HKD
B+
Retailer 2
-
$938 CAD
$671 USD
View
B+
Retailer 3
-
$1,001 CAD
$716 USD
View
Final sale: no returns
B+
Retailer 4
-
$1,051 CAD
SGD 1,016 SGD
View
B
Retailer 5
-
$1,072 CAD
$767 USD
View
B
Retailer 6
-
$1,116 CAD
SGD 1,079 SGD
View
B
Retailer 7
-
$1,436 CAD
€979 EUR
View
Most Expensive
B
With Clarity
1565217557 · Oct 30
$1,464 CAD
$1,048 USD
View
7 more retailers have this diamond
Prices start from $805 CADSave up to $660 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
$805 CAD