Marquise|Natural|GIA

0.51ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 6542475233

Certificate GIA 6542475233

Diamond specifications and retailer prices

From $910 USD
As of November 5, 2026
Save $510 USD (36%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,420 USD at Diamond Exchange Canada · As of November 5, 2026
View at Diamond Exchange Canada

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542475233. Listed at 9 retailers as of November 5, 2026, with prices from $910 to $1,420, a $510 spread on the same certified stone. Diamond Exchange Canada lists it at $1,420. 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
E
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.36°
OriginNatural
Grading LabGIA
CertificateGIA 6542475233
Dimensions8.28 × 4.34 × 2.52 mm
L/W Ratio1.91
Top View
8.28 mm4.34 mm0.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542475233
Side View
Table 63.0%Crown 33.36°Girdle: Sli. ThickPavilionCulet: NoneDepth 58.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,420 USD|Low: $805 USD|High: $1,420 USD|Avg: $1,011 USD
Diamond Exchange Canada
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 4$805 USD
Retailer 13$820 USD
Retailer 3$824 USD
Retailer 5$884 USD
Retailer 7$910 USD
Retailer 9$980 USD
Retailer 10$980 USD
Retailer 12$986 USD
Retailer 8$1,010 USD
Retailer 2$1,137 USD
Retailer 6$1,157 USD
Retailer 11$1,239 USD
Diamond Exchange Canada$1,420 USD

43 data points across 13 retailers

9 retailers$910 USD to $1,420 USD

B+
Cheapest Retailer
-
$910 USD
B+
Retailer 2
-
$980 USD
View
B+
Retailer 3
-
$980 USD
View
B+
Retailer 4
-
$986 USD
View
B+
Retailer 5
-
$1,010 USD
View
B+
Retailer 6
-
$1,137 USD
View
B+
Retailer 7
-
$1,157 USD
View
B
Retailer 8
-
$1,239 USD
View
Most Expensive
B
Diamond Exchange Canada
1984739230 · Nov 5
$1,420 USD
CA$1,973 CAD
View
8 more retailers have this diamond
Prices start from $910 USDSave up to $510 USD

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
$910 USD