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Marquise|Natural|GIA

0.51ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 2564717598

Certificate GIA 2564717598

Diamond specifications and retailer prices

From $1,006 CAD
SGD 973 SGD
As of October 31, 2026
Save $607 CAD (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,613 CAD at Frank Darling · As of November 2, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2564717598. Listed at 9 retailers as of October 31, 2026, with prices from $1,006 to $1,613, a $607 spread on the same certified stone. Frank Darling lists it at $1,613. 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
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2564717598
Dimensions7.86 × 4.16 × 2.60 mm
L/W Ratio1.89
Culet sizeNone
Top View
7.86 mm4.16 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2564717598
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.7%

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: Oct 31
Current: $1,613 CAD|Low: $1,006 CAD|High: $1,613 CAD|Avg: $1,262 CAD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 9$1,006 CAD
Retailer 5$1,030 CAD
Retailer 6$1,053 CAD
Retailer 7$1,081 CAD
Retailer 4$1,338 CAD
Retailer 2$1,386 CAD
Retailer 8$1,439 CAD
Retailer 3$1,509 CAD
Frank Darling$1,613 CAD

7 data points across 9 retailers

9 retailers$1,006 CAD to $1,613 CAD

B+
Cheapest Retailer
-
$1,006 CAD
SGD 973 SGD
B+
Retailer 2
-
$1,030 CAD
SGD 996 SGD
View
B+
Retailer 3
-
$1,053 CAD
$754 USD
View
B+
Retailer 4
-
$1,081 CAD
$774 USD
View
B
Retailer 5
-
$1,338 CAD
$958 USD
View
B
Retailer 6
-
$1,386 CAD
€945 EUR
View
B
Retailer 7
-
$1,439 CAD
$1,030 USD
View
B
Retailer 8
-
$1,509 CAD
$1,080 USD
View
Most Expensive
B
Frank Darling
2709605HK · Nov 2
$1,613 CAD
$1,155 USD
View
8 more retailers have this diamond
Prices start from $1,006 CADSave up to $607 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
$1,006 CAD