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Marquise|Natural|GIA

0.51ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 7566603273

Certificate GIA 7566603273

Diamond specifications and retailer prices

From $743 NZD
As of November 6, 2026
Save $780 NZD (51%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,523 NZD at Frank Darling · As of November 6, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7566603273. Listed at 11 retailers as of November 6, 2026, with prices from $743 to $1,523, a $780 spread on the same certified stone. Frank Darling lists it at $1,523. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.24°
Pavilion angle41.54°
OriginNatural
Grading LabGIA
CertificateGIA 7566603273
Dimensions8.13 × 4.12 × 2.65 mm
L/W Ratio1.97
Culet sizeNone
Top View
8.13 mm4.12 mm0.51 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7566603273
Side View
Table 58.0%Crown 36.24°Girdle: THN-VTKPavilion 41.54°Culet: NoneDepth 64.4%

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: Nov 6
Current: $1,523 NZD|Low: $743 NZD|High: $1,523 NZD|Avg: $992 NZD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8$743 NZD
Retailer 10$776 NZD
Retailer 6$808 NZD
Retailer 11$841 NZD
Retailer 5$891 NZD
Retailer 3$965 NZD
Retailer 9$1,039 NZD
Retailer 2$1,090 NZD
Retailer 7$1,113 NZD
Retailer 4$1,275 NZD
Frank Darling$1,523 NZD

23 data points across 11 retailers

11 retailers$743 NZD to $1,523 NZD

A
Cheapest Retailer
-
$743 NZD
A
Retailer 2
-
$776 NZD
View
A
Retailer 3
-
$808 NZD
View
A
Retailer 4
-
$841 NZD
View
A
Retailer 5
-
$891 NZD
View
B+
Retailer 6
-
$965 NZD
View
B+
Retailer 7
-
$1,039 NZD
View
B+
Retailer 8
-
$1,090 NZD
View
B+
Retailer 9
-
$1,113 NZD
View
B+
Retailer 10
-
$1,275 NZD
View
Most Expensive
B
Frank Darling
2702647HK · Nov 6
$1,523 NZD
$844 USD
View
10 more retailers have this diamond
Prices start from $743 NZDSave up to $780 NZD

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
$743 NZD