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Marquise|Natural|GIA

0.51ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 1563140120

Certificate GIA 1563140120

Diamond specifications and retailer prices

From $637 CAD
SGD 616 SGD
As of October 31, 2026
Save $648 CAD (50%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,284 CAD at Frank Darling · As of October 30, 2026
View at Frank Darling

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 1563140120. Listed at 10 retailers as of October 30, 2026, with prices from $637 to $1,284, a $648 spread on the same certified stone. Frank Darling lists it at $1,284. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1563140120
Dimensions8.32 × 4.12 × 2.41 mm
L/W Ratio2.02
Culet sizeNone
Top View
8.32 mm4.12 mm0.51 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1563140120
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.4%

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: $1,284 CAD|Low: $637 CAD|High: $1,318 CAD|Avg: $938 CAD|-2.6%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 7$637 CAD
Retailer 8$684 CAD
Retailer 10$719 CAD
Retailer 6$805 CAD
Retailer 5$891 CAD
Retailer 4$958 CAD
Retailer 3$977 CAD
Retailer 2$1,004 CAD
Retailer 9$1,036 CAD
Frank Darling$1,284 CAD

36 data points across 10 retailers

10 retailers$637 CAD to $1,284 CAD

A
Cheapest Retailer
-
$637 CAD
SGD 616 SGD
A
Retailer 2
-
$684 CAD
SGD 662 SGD
View
Retailer 3
-
$719 CAD
$515 USD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$805 CAD
£454 GBP
View
B+
Retailer 5
-
$891 CAD
$638 USD
View
B+
Retailer 6
-
$958 CAD
$686 USD
View
B+
Retailer 7
-
$977 CAD
€666 EUR
View
B+
Retailer 8
-
$1,004 CAD
$719 USD
View
B+
Retailer 9
-
$1,036 CAD
$742 USD
View
Most Expensive
B
Frank Darling
2679945HK · Oct 30
$1,284 CAD
$919 USD
View
9 more retailers have this diamond
Prices start from $637 CADSave up to $648 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
$637 CAD