Marquise|Natural|GIA

1.20ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 5241054637

Certificate GIA 5241054637

Diamond specifications and retailer prices

From €3,292 EUR
As of November 4, 2026
Save €2,606 EUR (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €5,898 EUR at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded I 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 5241054637. Listed at 14 retailers as of November 4, 2026, with prices from €3,292 to €5,898, a €2,606 spread on the same certified stone. Helzberg Diamonds lists it at €5,898. 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

1.20
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.62°
Pavilion angle40.02°
OriginNatural
Grading LabGIA
CertificateGIA 5241054637
Dimensions10.10 × 5.46 × 3.58 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.10 mm5.46 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5241054637
Side View
Table 59.0%Crown 40.62°Girdle: STK-VTKPavilion 40.02°Culet: NDepth 65.6%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: €5,898 EUR|Low: €3,292 EUR|High: €6,356 EUR|Avg: €4,250 EUR|-6.0%
Helzberg Diamonds
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 10€3,292 EUR
Retailer 12€3,343 EUR
Retailer 6€3,442 EUR
Retailer 9€3,513 EUR
Retailer 8€3,518 EUR
Retailer 4€3,594 EUR
Retailer 5€3,618 EUR
Retailer 7€3,775 EUR
Retailer 14€4,170 EUR
Retailer 3€4,201 EUR
Retailer 2€4,233 EUR
Retailer 11€5,552 EUR
Retailer 13€5,859 EUR
Helzberg Diamonds€5,898 EUR

35 data points across 14 retailers

14 retailers€3,292 EUR to €5,898 EUR

B+
Cheapest Retailer
-
€3,292 EUR
B+
Retailer 2
-
€3,343 EUR
View
B+
Retailer 3
-
€3,442 EUR
View
B+
Retailer 4
-
€3,513 EUR
View
B+
Retailer 5
-
€3,518 EUR
View
B+
Retailer 6
-
€3,594 EUR
View
B+
Retailer 7
-
€3,618 EUR
View
B
Retailer 8
-
€3,775 EUR
View
B
Retailer 9
-
€4,170 EUR
View
B
Retailer 10
-
€4,201 EUR
View
B
Retailer 11
-
€4,233 EUR
View
B
Retailer 12
-
€5,552 EUR
View
B
Retailer 13
-
€5,859 EUR
View
Most Expensive
B
Helzberg Diamonds
XZRLIKHGLKMJN · Nov 6
€5,898 EUR
$6,585 USD
View
13 more retailers have this diamond
Prices start from €3,292 EURSave up to €2,606 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+
1.20ct Marquise
€3,292 EUR