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Marquise|Natural|GIA

0.51ct I SI2 Marquise Natural Diamond

VG • I/SI2 • GIA 6392602089

Certificate GIA 6392602089

Diamond specifications and retailer prices

From $1,269 SGD
As of November 5, 2026
Save $1,106 SGD (47%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $2,375 SGD at MOH London · As of November 4, 2026
View at MOH London

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded I 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 6392602089. Listed at 5 retailers as of November 4, 2026, with prices from $1,269 to $2,375, a $1,106 spread on the same certified stone. MOH London lists it at $2,375. 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
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6392602089
Dimensions8.85 × 3.99 × 2.27 mm
L/W Ratio2.22
Top View
8.85 mm3.99 mm0.51 ctI / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6392602089
Side View
Table 60.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 56.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $2,375 SGD|Low: $1,237 SGD|High: $2,407 SGD|Avg: $1,621 SGD|+2.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 4, 2026
Retailer 3$1,256 SGD
Retailer 5$1,269 SGD
Retailer 4$1,298 SGD
Retailer 6$1,385 SGD
Retailer 2$1,815 SGD
Retailer 7$1,906 SGD
MOH London$2,375 SGD

20 data points across 7 retailers

5 retailers$1,269 SGD to $2,375 SGD

Retailer 1
-
$1,256 SGD
Price last confirmed 20 days ago
B
Retailer 2
-
$1,269 SGD
View
Retailer 3
-
$1,298 SGD
View
Price last confirmed 9 days ago
B
Retailer 4
-
$1,815 SGD
View
Most Expensive
C
MOH London
66D9DBCA7 · Nov 4
$2,375 SGD
£1,459 GBP
View
4 more retailers have this diamond
Prices start from $1,269 SGDSave up to $1,106 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.

B
0.51ct Marquise
$1,269 SGD