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Marquise|Natural|GIA

3.51ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 6545092490

Certificate GIA 6545092490

Diamond specifications and retailer prices

From €35,574 EUR
$39,743 USD
As of November 2, 2026
Save €7,805 EUR (18%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €43,378 EUR at GemTrove · As of November 2, 2026
View at GemTrove

About this 3.51ct natural marquise diamond

This 3.51ct natural marquise sits in the three to five carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545092490. Listed at 9 retailers as of November 2, 2026, with prices from €35,574 to €43,378, a €7,805 spread on the same certified stone. GemTrove lists it at €43,378. 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

3.51
Carat
I
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle37.46°
Pavilion angle40.51°
OriginNatural
Grading LabGIA
CertificateGIA 6545092490
Dimensions15.34 × 7.68 × 5.05 mm
L/W Ratio2.00
Top View
15.34 mm7.68 mm3.51 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545092490
Side View
Table 57.0%Crown 37.46°Girdle: MED-VTKPavilion 40.51°Culet: NoneDepth 65.7%

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 2
Current: €43,378 EUR|Low: €35,574 EUR|High: €46,303 EUR|Avg: €40,726 EUR
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
September 26, 2026
Retailer 4€35,574 EUR
Retailer 6€35,985 EUR
Retailer 5€37,854 EUR
Retailer 2€40,113 EUR
Retailer 11€40,530 EUR
Retailer 3€41,464 EUR
Retailer 8€41,693 EUR
Retailer 9€41,693 EUR
Retailer 10€43,090 EUR
GemTrove€43,378 EUR
Retailer 7€46,303 EUR

2 data points across 11 retailers

9 retailers€35,574 EUR to €43,378 EUR

B+
Cheapest Retailer
-
€35,574 EUR
$39,743 USD
B+
Retailer 2
-
€35,985 EUR
$40,203 USD
View
B+
Retailer 3
-
€37,854 EUR
$42,291 USD
View
B+
Retailer 4
-
€39,337 EUR
A$67,612 AUD
View
B
Retailer 5
-
€40,113 EUR
$44,815 USD
View
B
Retailer 6
-
€41,693 EUR
$46,580 USD
View
B
Retailer 7
-
€41,693 EUR
$46,580 USD
View
B
Retailer 8
-
€43,090 EUR
$48,140 USD
View
Most Expensive
B
GemTrove
GT-N-00924979-98 · Nov 2
€43,378 EUR
A$74,558 AUD
View
8 more retailers have this diamond
Prices start from €35,574 EURSave up to €7,805 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+
3.51ct Marquise
€35,574 EUR