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Marquise|Natural|GIA

1.21ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 6555815638

Certificate GIA 6555815638

Diamond specifications and retailer prices

From €4,915 EUR
$5,513 USD
As of November 1, 2026
Save €4,250 EUR (46%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €10,405 EUR at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded F 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 6555815638. Listed at 15 retailers as of November 1, 2026, with a 86% 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

1.21
Carat
F
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555815638
Dimensions10.54 × 5.44 × 3.46 mm
L/W Ratio1.94
Girdle conditionFaceted
Culet sizeNone
Top View
10.54 mm5.44 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555815638
Side View
Table 54.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 63.5%

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 1
Current: €5,966 EUR|Low: €4,915 EUR|High: €9,276 EUR|Avg: €6,286 EUR|-0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 9€4,915 EUR
Retailer 10€5,242 EUR
Retailer 11€5,246 EUR
Retailer 2€5,636 EUR
Retailer 3€5,636 EUR
Retailer 1€5,966 EUR
Retailer 8€6,038 EUR
Retailer 4€6,068 EUR
Retailer 5€6,797 EUR
Retailer 7€7,643 EUR
Retailer 6€9,165 EUR

38 data points across 11 retailers

15 retailers€4,915 EUR to €9,165 EUR

B+
Cheapest Retailer
-
€4,915 EUR
$5,513 USD
B
Retailer 2
-
€5,242 EUR
$5,880 USD
View
B
Retailer 3
-
€5,246 EUR
$5,884 USD
View
B
Retailer 4
-
€5,636 EUR
$6,321 USD
View
B
Retailer 5
-
€5,636 EUR
$6,321 USD
View
B
Retailer 6
-
€5,636 EUR
$6,321 USD
View
B
Retailer 7
-
€5,966 EUR
£5,269 GBP
View
Retailer 8
-
€6,038 EUR
A$10,419 AUD
View
Price last confirmed 12 days ago
B
Retailer 9
-
€6,068 EUR
£5,359 GBP
View
B
Retailer 10
-
€6,503 EUR
$7,294 USD
View
B
Retailer 11
-
€6,797 EUR
View
Retailer 12
-
€6,857 EUR
$7,691 USD
View
Price last confirmed 11 days ago
B
Retailer 13
-
€7,643 EUR
ZAR 138,497 ZAR
View
B
Retailer 14
-
€9,165 EUR
£8,094 GBP
View
Most Expensive
NZ Jewellers
f1aca82f-d0db-43c3-a5f3-41e16ae1135e · Nov 3
€10,405 EUR
$11,670 USD
View
Price under review
14 more retailers have this diamond
Prices start from €4,915 EURSave up to €4,250 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+
1.21ct Marquise
€4,915 EUR