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Marquise|Natural|GIA

0.51ct G SI2 Marquise Natural Diamond

VG • G/SI2 • GIA 6552497564

Certificate GIA 6552497564

Diamond specifications and retailer prices

From $566 USD
As of November 2, 2026
Save $1,556 USD (73%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,122 USD 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6552497564. Listed at 21 retailers as of October 30, 2026, with prices from $566 to $2,122, a $1,556 spread on the same certified stone. NZ Jewellers lists it at $2,122. 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
G
Color
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.6°
Pavilion angle41.5°
OriginNatural
Grading LabGIA
CertificateGIA 6552497564
Dimensions7.97 × 4.23 × 2.69 mm
L/W Ratio1.88
Girdle conditionFaceted
Top View
7.97 mm4.23 mm0.51 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552497564
Side View
Table 61.0%Crown 36.6°Girdle: MED-THKPavilion 41.5°Culet: NDepth 63.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $2,122 USD|Low: $486 USD|High: $2,185 USD|Avg: $829 USD|-2.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 2, 2026
Retailer 10$566 USD
Retailer 15$580 USD
Retailer 7$613 USD
Retailer 11$614 USD
Retailer 9$660 USD
Retailer 12$660 USD
Retailer 14$676 USD
Retailer 17$687 USD
Retailer 6$694 USD
Retailer 4$707 USD
Retailer 8$715 USD
Retailer 5$750 USD
Retailer 19$750 USD
Retailer 20$780 USD
Retailer 2$808 USD
Retailer 13$828 USD
Retailer 3$868 USD
Retailer 18$906 USD
Retailer 16$1,562 USD
NZ Jewellers$2,122 USD

29 data points across 20 retailers

21 retailers$566 USD to $2,122 USD

A
Cheapest Retailer
-
$566 USD
Final sale: no returns
A
Retailer 2
-
$580 USD
View
A
Retailer 3
-
$613 USD
View
B+
Retailer 4
-
$614 USD
HK$4,800 HKD
View
A
Retailer 5
-
$660 USD
View
A
Retailer 6
-
$660 USD
View
A
Retailer 7
-
$676 USD
View
A
Retailer 8
-
$687 USD
View
A
Retailer 9
-
$694 USD
View
B+
Retailer 10
-
$707 USD
View
A
Retailer 11
-
$715 USD
View
B+
Retailer 12
-
$750 USD
View
B+
Retailer 13
-
$750 USD
View
B+
Retailer 14
-
$780 USD
View
B+
Retailer 15
-
$808 USD
£636 GBP
View
B+
Retailer 16
-
$828 USD
£652 GBP
View
B+
Retailer 17
-
$868 USD
View
Retailer 18
-
$903 USD
£711 GBP
View
Price last confirmed 36 days ago
B+
Retailer 19
-
$906 USD
€863 EUR
View
B
Retailer 20
-
$1,562 USD
£1,230 GBP
View
Most Expensive
B
NZ Jewellers
76c2553c-4cf3-400f-8ed5-5859e1cdf99e · Oct 30
$2,122 USD
View
20 more retailers have this diamond
Prices start from $566 USDSave up to $1,556 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.

A
0.51ct Marquise
$566 USD