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Marquise|Natural|GIA

0.51ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 3495552793

Certificate GIA 3495552793

Diamond specifications and retailer prices

From $871 NZD
$490 USD
As of November 1, 2026
Save $1,140 NZD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,338 NZD 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 3495552793. Listed at 15 retailers as of November 1, 2026, with a 131% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3495552793
Dimensions7.98 × 4.35 × 2.57 mm
L/W Ratio1.83
Top View
7.98 mm4.35 mm0.51 ctJ / SI1
OriginNatural
CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 3495552793
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 59.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $3,338 NZD|Low: $871 NZD|High: $3,338 NZD|Avg: $1,288 NZD
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 5$871 NZD
Retailer 9$898 NZD
Retailer 4$938 NZD
Retailer 14$938 NZD
Retailer 12$995 NZD
Retailer 3$1,004 NZD
Retailer 7$1,069 NZD
Retailer 8$1,088 NZD
Retailer 13$1,104 NZD
Retailer 10$1,310 NZD
Retailer 6$1,337 NZD
Retailer 11$1,344 NZD
Retailer 2$2,011 NZD
NZ Jewellers$3,338 NZD

33 data points across 14 retailers

15 retailers$871 NZD to $2,011 NZD

B+
Cheapest Retailer
-
$871 NZD
$490 USD
B+
Retailer 2
-
$898 NZD
$505 USD
View
B+
Retailer 3
-
$938 NZD
$528 USD
View
B+
Retailer 4
-
$938 NZD
$528 USD
View
B+
Retailer 5
-
$995 NZD
$560 USD
View
B+
Retailer 6
-
$1,004 NZD
$565 USD
View
B+
Retailer 7
-
$1,069 NZD
£474 GBP
View
B+
Retailer 8
-
$1,088 NZD
£482 GBP
View
B+
Retailer 9
-
$1,104 NZD
$621 USD
View
B
Retailer 10
-
$1,280 NZD
$720 USD
View
B
Retailer 11
-
$1,310 NZD
€702 EUR
View
Retailer 12
-
$1,337 NZD
A$1,157 AUD
View
Price last confirmed 30 days ago
B
Retailer 13
-
$1,344 NZD
ZAR 12,220 ZAR
View
B
Retailer 14
-
$2,011 NZD
£891 GBP
View
Most Expensive
NZ Jewellers
7528be13-a305-4cd0-8e37-6ab161afcc42 · Oct 30
$3,338 NZD
$1,878 USD
View
Price under review
14 more retailers have this diamond
Prices start from $871 NZDSave up to $1,140 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.

B+
0.51ct Marquise
$871 NZD