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Marquise|Natural|GIA

0.51ct G SI2 Marquise Natural Diamond

VG • G/SI2 • GIA 2564139739

Certificate GIA 2564139739

Diamond specifications and retailer prices

From $989 NZD
SGD 752 SGD
As of November 3, 2026
Save $759 NZD (43%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,748 NZD at Frank Darling · As of November 2, 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 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 2564139739. Listed at 5 retailers as of November 2, 2026, with prices from $989 to $1,748, a $759 spread on the same certified stone. Frank Darling lists it at $1,748. 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
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2564139739
Dimensions7.89 × 4.14 × 2.61 mm
L/W Ratio1.91
Culet sizeNone
Top View
7.89 mm4.14 mm0.51 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2564139739
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.0%

Caratlytics Score

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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 3
Current: $1,748 NZD|Low: $989 NZD|High: $1,767 NZD|Avg: $1,315 NZD|-1.1%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6$989 NZD
Retailer 3$1,013 NZD
Retailer 8$1,032 NZD
Retailer 2$1,164 NZD
Retailer 4$1,288 NZD
Retailer 9$1,422 NZD
Retailer 7$1,468 NZD
Retailer 5$1,486 NZD
Frank Darling$1,748 NZD

19 data points across 9 retailers

5 retailers$989 NZD to $1,748 NZD

A
Cheapest Retailer
-
$989 NZD
SGD 752 SGD
Retailer 2
-
$1,013 NZD
$570 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
$1,164 NZD
£516 GBP
View
Retailer 4
-
$1,486 NZD
$836 USD
View
Price last confirmed 17 days ago
Most Expensive
B
Frank Darling
2679425HK · Nov 2
$1,748 NZD
$984 USD
View
4 more retailers have this diamond
Prices start from $989 NZDSave up to $759 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
$989 NZD