Marquise|Natural|GIA

3.51ct D SI1 Marquise Natural Diamond

VG • D/SI1 • GIA 6555906629

Certificate GIA 6555906629

Diamond specifications and retailer prices

From €51,753 EUR
SGD 78,441 SGD
As of October 30, 2026
Save €31,646 EUR (38%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €83,399 EUR at Helzberg Diamonds · As of October 30, 2026
View at Helzberg Diamonds

About this 3.51ct natural marquise diamond

This 3.51ct natural marquise sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6555906629. Listed at 13 retailers as of October 30, 2026, with prices from €51,753 to €83,399, a €31,646 spread on the same certified stone. Helzberg Diamonds lists it at €83,399. 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

3.51
Carat
D
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.13°
Pavilion angle40.92°
OriginNatural
Grading LabGIA
CertificateGIA 6555906629
Dimensions14.75 × 7.85 × 5.14 mm
L/W Ratio1.88
Culet sizeNone
Top View
14.75 mm7.85 mm3.51 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555906629
Side View
Table 61.0%Crown 40.13°Girdle: THK-VTKPavilion 40.92°Culet: NDepth 65.5%

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: Oct 30
Current: €83,399 EUR|Low: €51,753 EUR|High: €88,596 EUR|Avg: €65,502 EUR|-5.9%
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
October 31, 2026
Retailer 11€51,753 EUR
Retailer 6€54,416 EUR
Retailer 10€54,859 EUR
Retailer 12€55,107 EUR
Retailer 8€57,229 EUR
Retailer 3€57,806 EUR
Retailer 13€58,361 EUR
Retailer 4€61,722 EUR
Retailer 5€64,072 EUR
Retailer 7€66,117 EUR
Retailer 9€66,238 EUR
Retailer 2€79,468 EUR
Helzberg Diamonds€83,399 EUR

31 data points across 13 retailers

13 retailers€51,753 EUR to €83,399 EUR

B+
Cheapest Retailer
-
€51,753 EUR
SGD 78,441 SGD
B+
Retailer 2
-
€54,416 EUR
£48,058 GBP
View
B+
Retailer 3
-
€54,859 EUR
$61,530 USD
View
B+
Retailer 4
-
€55,107 EUR
$61,808 USD
View
B+
Retailer 5
-
€57,229 EUR
$64,188 USD
View
B+
Retailer 6
-
€57,806 EUR
$64,836 USD
View
B+
Retailer 7
-
€58,361 EUR
SGD 88,456 SGD
View
B
Retailer 8
-
€61,722 EUR
$69,228 USD
View
B+
Retailer 9
-
€64,072 EUR
$71,864 USD
View
B
Retailer 10
-
€66,117 EUR
View
B
Retailer 11
-
€66,238 EUR
$74,292 USD
View
B
Retailer 12
-
€79,468 EUR
$89,132 USD
View
Most Expensive
B
Helzberg Diamonds
XZRMLLLPGMMIP · Oct 30
€83,399 EUR
$93,541 USD
View
12 more retailers have this diamond
Prices start from €51,753 EURSave up to €31,646 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
€51,753 EUR