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Marquise|Natural|GIA

0.51ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 1443043252

Certificate GIA 1443043252

Diamond specifications and retailer prices

From $500 NZD
As of November 6, 2026
Save $703 NZD (58%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,203 NZD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1443043252. Listed at 3 retailers as of November 6, 2026, with prices from $500 to $1,203, a $703 spread on the same certified stone. 77 Diamonds lists it at $1,203. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1443043252
Dimensions7.56 × 4.23 × 2.75 mm
L/W Ratio1.79
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
7.56 mm4.23 mm0.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1443043252
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $1,203 NZD|Low: $500 NZD|High: $1,218 NZD|Avg: $899 NZD|+1.2%
77 Diamonds
Retailer 2
Retailer 3
November 6, 2026
Retailer 2$500 NZD
Retailer 3$978 NZD
77 Diamonds$1,203 NZD

42 data points across 3 retailers

3 retailers$500 NZD to $1,203 NZD

A
Cheapest Retailer
-
$500 NZD
B+
Retailer 2
-
$978 NZD
View
Most Expensive
B+
77 Diamonds
MQCPJYQSWAYU · Nov 6
$1,203 NZD
£525 GBP
View
2 more retailers have this diamond
Prices start from $500 NZDSave up to $703 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
$500 NZD