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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 $526 SGD
As of November 6, 2026
Save $552 SGD (51%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,078 SGD 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 $526 to $1,078, a $552 spread on the same certified stone. Frank Darling lists it at $1,078. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,078 SGD|Low: $526 SGD|High: $1,078 SGD|Avg: $703 SGD
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$526 SGD
Retailer 10$549 SGD
Retailer 6$572 SGD
Retailer 11$595 SGD
Retailer 5$631 SGD
Retailer 3$683 SGD
Retailer 9$736 SGD
Retailer 2$771 SGD
Retailer 7$788 SGD
Retailer 4$903 SGD
Frank Darling$1,078 SGD

23 data points across 11 retailers

11 retailers$526 SGD to $1,078 SGD

A
Cheapest Retailer
-
$526 SGD
A
Retailer 2
-
$549 SGD
View
A
Retailer 3
-
$572 SGD
View
A
Retailer 4
-
$595 SGD
View
A
Retailer 5
-
$631 SGD
View
B+
Retailer 6
-
$683 SGD
View
B+
Retailer 7
-
$736 SGD
View
B+
Retailer 8
-
$771 SGD
View
B+
Retailer 9
-
$788 SGD
View
B+
Retailer 10
-
$903 SGD
View
Most Expensive
B
Frank Darling
2702647HK · Nov 6
$1,078 SGD
$844 USD
View
10 more retailers have this diamond
Prices start from $526 SGDSave up to $552 SGD

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
$526 SGD