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Marquise|Natural|GIA

0.51ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6562612974

Certificate GIA 6562612974

Diamond specifications and retailer prices

From $582 SGD
$455 USD
As of November 2, 2026
Save $1,889 SGD (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,471 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6562612974. Listed at 14 retailers as of October 30, 2026, with prices from $582 to $2,471, a $1,889 spread on the same certified stone. NZ Jewellers lists it at $2,471. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6562612974
Dimensions8.00 × 4.23 × 2.67 mm
L/W Ratio1.89
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal
Top View
8.00 mm4.23 mm0.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6562612974
Side View
Table 57.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.0%

Caratlytics Score

How it works →
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 2
Current: $2,471 SGD|Low: $582 SGD|High: $2,471 SGD|Avg: $919 SGD|+19.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 2, 2026
Retailer 11$582 SGD
Retailer 13$630 SGD
Retailer 12$652 SGD
Retailer 2$679 SGD
Retailer 6$694 SGD
Retailer 5$700 SGD
Retailer 8$728 SGD
Retailer 14$728 SGD
Retailer 3$735 SGD
Retailer 9$774 SGD
Retailer 10$788 SGD
Retailer 4$870 SGD
Retailer 7$1,457 SGD
NZ Jewellers$2,471 SGD

13 data points across 14 retailers

14 retailers$582 SGD to $2,471 SGD

A
Cheapest Retailer
-
$582 SGD
$455 USD
Final sale: no returns
A
Retailer 2
-
$630 SGD
$493 USD
View
A
Retailer 3
-
$652 SGD
$510 USD
View
A
Retailer 4
-
$679 SGD
$531 USD
View
A
Retailer 5
-
$694 SGD
$543 USD
View
A
Retailer 6
-
$700 SGD
View
A
Retailer 7
-
$728 SGD
$569 USD
View
A
Retailer 8
-
$728 SGD
$569 USD
View
A
Retailer 9
-
$735 SGD
$575 USD
View
A
Retailer 10
-
$774 SGD
£477 GBP
View
A
Retailer 11
-
$788 SGD
£485 GBP
View
B+
Retailer 12
-
$870 SGD
$680 USD
View
B
Retailer 13
-
$1,457 SGD
£897 GBP
View
Most Expensive
C
NZ Jewellers
0b52d66a-7e99-4f9c-a014-51de6eea188d · Oct 30
$2,471 SGD
$1,932 USD
View
13 more retailers have this diamond
Prices start from $582 SGDSave up to $1,889 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
$582 SGD