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Marquise|Natural|IGI

0.51ct G SI2 Marquise Natural Diamond

VG • G/SI2 • IGI 815681717

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 815681717

Diamond specifications and retailer prices

From €336 EUR
₹35,798 INR
As of October 27, 2026
Save €1,345 EUR (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €1,682 EUR at NZ Jewellers · As of October 27, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 815681717. Listed at 12 retailers as of October 27, 2026, with prices from €336 to €1,682, a €1,345 spread on the same certified stone. NZ Jewellers lists it at €1,682. 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
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle34.8°
OriginNatural
Grading LabIGI
CertificateIGI 815681717
Dimensions9.02 × 4.08 × 2.33 mm
L/W Ratio2.21
Girdle conditionFaceted
Top View
9.02 mm4.08 mm0.51 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 815681717
Side View
Table 59.0%Crown 39.6°Girdle: MED-THKPavilion 34.8°Culet: NoneDepth 57.1%

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: Oct 27
Current: €1,682 EUR|Low: €336 EUR|High: €1,682 EUR|Avg: €592 EUR
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
October 28, 2026
Retailer 10€336 EUR
Retailer 5€405 EUR
Retailer 13€439 EUR
Retailer 4€473 EUR
Retailer 11€507 EUR
Retailer 8€527 EUR
Retailer 7€533 EUR
Retailer 9€550 EUR
Retailer 3€556 EUR
Retailer 2€565 EUR
Retailer 6€612 EUR
Retailer 12€1,015 EUR
NZ Jewellers€1,682 EUR

5 data points across 13 retailers

12 retailers€336 EUR to €1,682 EUR

A
Cheapest Retailer
-
€336 EUR
₹35,798 INR
Retailer 2
-
€439 EUR
$490 USD
View
Price last confirmed 7 days ago
Retailer 3
-
€473 EUR
$528 USD
View
Price last confirmed 7 days ago
B+
Retailer 4
-
€507 EUR
$566 USD
View
A
Retailer 5
-
€527 EUR
£464 GBP
View
B+
Retailer 6
-
€533 EUR
$595 USD
View
A
Retailer 7
-
€550 EUR
£484 GBP
View
Retailer 8
-
€556 EUR
$622 USD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
€565 EUR
$631 USD
View
A
Retailer 10
-
€612 EUR
View
B
Retailer 11
-
€1,015 EUR
£893 GBP
View
Most Expensive
C
NZ Jewellers
5fe76a14-e0cf-40a4-8f00-2a032bf2f2f6 · Oct 27
€1,682 EUR
$1,879 USD
View
11 more retailers have this diamond
Prices start from €336 EURSave up to €1,345 EUR

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
€336 EUR