Marquise|Natural|GIA

1.20ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 6555015831

Certificate GIA 6555015831

Diamond specifications and retailer prices

From €4,498 EUR
As of November 6, 2026
Save €3,835 EUR (46%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €9,922 EUR at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555015831. Listed at 20 retailers as of November 2, 2026, with a 85% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.20
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555015831
Dimensions12.15 × 5.28 × 3.03 mm
L/W Ratio2.30
Top View
12.15 mm5.28 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555015831
Side View
Table 64.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 57.5%

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: Nov 6
Current: €5,643 EUR|Low: €4,498 EUR|High: €8,845 EUR|Avg: €6,109 EUR|-2.8%
Retailer 1
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 4€4,498 EUR
Retailer 11€4,640 EUR
Retailer 2€4,890 EUR
Retailer 8€4,966 EUR
Retailer 9€5,271 EUR
Retailer 1€5,643 EUR
Retailer 12€5,643 EUR
Retailer 5€5,649 EUR
Retailer 7€5,831 EUR
Retailer 13€6,156 EUR
Retailer 6€6,301 EUR
Retailer 10€6,770 EUR
Retailer 3€7,746 EUR
Retailer 14€8,333 EUR

38 data points across 14 retailers

20 retailers€4,498 EUR to €8,333 EUR

B+
Cheapest Retailer
-
€4,498 EUR
B+
Retailer 2
-
€4,640 EUR
View
Final sale: no returns
B+
Retailer 3
-
€4,890 EUR
View
B+
Retailer 4
-
€4,966 EUR
View
B+
Retailer 5
-
€5,271 EUR
View
Retailer 6
-
€5,374 EUR
View
Price last confirmed 36 days ago
Retailer 7
-
€5,374 EUR
View
Price last confirmed 36 days ago
B
Retailer 8
-
€5,416 EUR
View
B+
Retailer 9
-
€5,643 EUR
View
B+
Retailer 10
-
€5,643 EUR
View
Retailer 11
-
€5,649 EUR
View
Price last confirmed 27 days ago
B+
Retailer 12
-
€5,831 EUR
View
B
Retailer 13
-
€6,156 EUR
View
Retailer 14
-
€6,202 EUR
View
Price last confirmed 52 days ago
Retailer 15
-
€6,202 EUR
View
Price last confirmed 38 days ago
Retailer 16
-
€6,301 EUR
View
Price last confirmed 14 days ago
B
Retailer 17
-
€6,770 EUR
View
Retailer 18
-
€7,746 EUR
View
Price last confirmed 9 days ago
B
Retailer 19
-
€8,333 EUR
View
Most Expensive
NZ Jewellers
ded45a2b-0ace-4b94-9ef8-4363f099808d · Sep 30
€9,922 EUR
$11,078 USD
View
Price last confirmed 37 days ago
19 more retailers have this diamond
Prices start from €4,498 EURSave up to €3,835 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
€4,498 EUR