CaratHunter
Plans
Marquise|Natural|GIA

0.51ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 1553998645

Certificate GIA 1553998645

Diamond specifications and retailer prices

From $864 NZD
HK$3,800 HKD
As of November 1, 2026
Save $2,392 NZD (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,256 NZD at NZ Jewellers · As of November 3, 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553998645. Listed at 15 retailers as of November 1, 2026, with prices from $864 to $3,256, a $2,392 spread on the same certified stone. NZ Jewellers lists it at $3,256. 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
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceVery Strong
OriginNatural
Grading LabGIA
CertificateGIA 1553998645
Dimensions8.26 × 4.07 × 2.63 mm
L/W Ratio2.03
Key to symbols
Feather, Crystal
Top View
8.26 mm4.07 mm0.51 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceVery Strong
CertificateGIA 1553998645
Side View
Table 56.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.6%

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 1
Current: $3,256 NZD|Low: $841 NZD|High: $3,393 NZD|Avg: $1,436 NZD|+4.4%
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 3, 2026
Retailer 3$864 NZD
Retailer 4$958 NZD
Retailer 12$1,038 NZD
Retailer 6$1,081 NZD
Retailer 13$1,118 NZD
Retailer 14$1,118 NZD
Retailer 11$1,198 NZD
Retailer 7$1,240 NZD
Retailer 2$1,274 NZD
Retailer 5$1,274 NZD
Retailer 10$1,301 NZD
Retailer 9$1,536 NZD
Retailer 8$2,397 NZD
NZ Jewellers$3,256 NZD

28 data points across 14 retailers

15 retailers$864 NZD to $3,256 NZD

A
Cheapest Retailer
-
$864 NZD
HK$3,800 HKD
B+
Retailer 2
-
$958 NZD
$539 USD
View
Final sale: no returns
A
Retailer 3
-
$1,038 NZD
$584 USD
View
A
Retailer 4
-
$1,081 NZD
SGD 822 SGD
View
Price last confirmed 7 days ago
Retailer 5
-
$1,111 NZD
$625 USD
View
Price last confirmed 26 days ago
A
Retailer 6
-
$1,118 NZD
$629 USD
View
A
Retailer 7
-
$1,118 NZD
$629 USD
View
A
Retailer 8
-
$1,198 NZD
$674 USD
View
A
Retailer 9
-
$1,240 NZD
£549 GBP
View
B+
Retailer 10
-
$1,274 NZD
£564 GBP
View
A
Retailer 11
-
$1,274 NZD
$717 USD
View
B+
Retailer 12
-
$1,301 NZD
£576 GBP
View
B+
Retailer 13
-
$1,536 NZD
€823 EUR
View
B
Retailer 14
-
$2,397 NZD
£1,062 GBP
View
Most Expensive
B
NZ Jewellers
cd7321ad-4ad1-46ac-9f13-61380a8cffbd · Nov 3
$3,256 NZD
$1,832 USD
View
14 more retailers have this diamond
Prices start from $864 NZDSave up to $2,392 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
$864 NZD