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Marquise|Natural|GIA

0.51ct F SI2 Marquise Natural Diamond

VG • F/SI2 • GIA 6565139545

Certificate GIA 6565139545

Diamond specifications and retailer prices

From $766 SGD
As of November 6, 2026
Save $544 SGD (42%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,310 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 F colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6565139545. Listed at 8 retailers as of November 6, 2026, with prices from $766 to $1,310, a $544 spread on the same certified stone. Frank Darling lists it at $1,310. 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
F
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565139545
Dimensions7.85 × 4.13 × 2.58 mm
L/W Ratio1.90
Culet sizeNone
Top View
7.85 mm4.13 mm0.51 ctF / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565139545
Side View
Table 60.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 62.5%

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: $1,310 SGD|Low: $766 SGD|High: $1,325 SGD|Avg: $1,002 SGD|-1.1%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$766 SGD
Retailer 6$788 SGD
Retailer 9$788 SGD
Retailer 5$900 SGD
Retailer 7$996 SGD
Retailer 3$1,071 SGD
Retailer 2$1,124 SGD
Retailer 4$1,148 SGD
Frank Darling$1,310 SGD

25 data points across 9 retailers

8 retailers$766 SGD to $1,310 SGD

A
Cheapest Retailer
-
$766 SGD
Retailer 2
-
$788 SGD
View
Price last confirmed 20 days ago
A
Retailer 3
-
$900 SGD
View
B+
Retailer 4
-
$996 SGD
View
B+
Retailer 5
-
$1,071 SGD
View
B+
Retailer 6
-
$1,124 SGD
View
B+
Retailer 7
-
$1,148 SGD
View
Most Expensive
B
Frank Darling
2679411HK · Nov 6
$1,310 SGD
$1,022 USD
View
7 more retailers have this diamond
Prices start from $766 SGDSave up to $544 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
$766 SGD