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Marquise|Natural|IGI

0.51ct I SI2 Marquise Natural Diamond

GD • I/SI2 • IGI 649481398

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 649481398

Diamond specifications and retailer prices

From €361 EUR
As of November 5, 2026
Save €1,023 EUR (74%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €1,384 EUR at NZ Jewellers · As of November 5, 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 SI2 clarity (slightly-included), with a standard cut grade and certified by IGI 649481398. Listed at 13 retailers as of November 5, 2026, with prices from €361 to €1,384, a €1,023 spread on the same certified stone. NZ Jewellers lists it at €1,384. 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
I
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.2°
Pavilion angle36.7°
OriginNatural
Grading LabIGI
CertificateIGI 649481398
Dimensions9.00 × 4.02 × 2.32 mm
L/W Ratio2.24
Girdle conditionFaceted
Culet sizePointed
Top View
9.00 mm4.02 mm0.51 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 649481398
Side View
Table 64.0%Crown 38.2°Girdle: STK-VTKPavilion 36.7°Culet: NoneDepth 57.7%

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 5
Current: €1,384 EUR|Low: €361 EUR|High: €1,384 EUR|Avg: €550 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
Retailer 14
November 6, 2026
Retailer 3€361 EUR
Retailer 9€376 EUR
Retailer 4€389 EUR
Retailer 10€389 EUR
Retailer 12€394 EUR
Retailer 14€416 EUR
Retailer 2€428 EUR
Retailer 5€477 EUR
Retailer 11€501 EUR
Retailer 13€504 EUR
Retailer 6€542 EUR
Retailer 7€649 EUR
Retailer 8€832 EUR
NZ Jewellers€1,384 EUR

42 data points across 14 retailers

13 retailers€361 EUR to €1,384 EUR

Retailer 1
-
€361 EUR
Price last confirmed 53 days ago
B+
Retailer 2
-
€361 EUR
View
B+
Retailer 3
-
€376 EUR
View
Retailer 4
-
€389 EUR
View
Price last confirmed 8 days ago
B+
Retailer 5
-
€389 EUR
View
B+
Retailer 6
-
€416 EUR
View
B+
Retailer 7
-
€428 EUR
View
B+
Retailer 8
-
€477 EUR
View
B+
Retailer 9
-
€501 EUR
View
B+
Retailer 10
-
€504 EUR
View
B
Retailer 11
-
€649 EUR
View
B
Retailer 12
-
€832 EUR
View
Most Expensive
C
NZ Jewellers
dc731d7a-b765-4572-94a9-9777cff5c7f0 · Nov 5
€1,384 EUR
$1,545 USD
View
12 more retailers have this diamond
Prices start from €361 EURSave up to €1,023 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.

B+
0.51ct Marquise
€361 EUR