Marquise|Natural|GIA

1.20ct G SI1 Marquise Natural Diamond

ID • G/SI1 • GIA 6545625677

Certificate GIA 6545625677

Diamond specifications and retailer prices

From €5,850 EUR
As of November 6, 2026
Save €3,541 EUR (38%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €11,641 EUR at NZ Jewellers · As of November 5, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545625677. Listed at 12 retailers as of November 4, 2026, with a 61% 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
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6545625677
Dimensions11.89 × 5.23 × 3.31 mm
L/W Ratio2.27
Top View
11.89 mm5.23 mm1.20 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6545625677
Side View
Table 59.0%CrownGirdle: ThickPavilionCulet: NoneDepth 63.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: €11,641 EUR|Low: €5,776 EUR|High: €11,641 EUR|Avg: €7,259 EUR|+1.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 7, 2026
Retailer 9€5,850 EUR
Retailer 5€5,981 EUR
Retailer 8€6,016 EUR
Retailer 7€6,422 EUR
Retailer 6€6,497 EUR
Retailer 10€6,589 EUR
Retailer 4€6,650 EUR
Retailer 11€6,920 EUR
Retailer 2€7,020 EUR
Retailer 3€7,546 EUR
Retailer 12€8,492 EUR
Retailer 13€9,391 EUR
NZ Jewellers€11,641 EUR

16 data points across 13 retailers

12 retailers€5,850 EUR to €9,391 EUR

B
Cheapest Retailer
-
€5,850 EUR
B
Retailer 2
-
€6,016 EUR
View
B
Retailer 3
-
€6,422 EUR
View
B
Retailer 4
-
€6,497 EUR
View
B
Retailer 5
-
€6,589 EUR
View
Retailer 6
-
€6,650 EUR
View
Price last confirmed 35 days ago
B
Retailer 7
-
€6,920 EUR
View
B
Retailer 8
-
€7,020 EUR
View
B
Retailer 9
-
€7,546 EUR
View
B
Retailer 10
-
€8,492 EUR
View
B
Retailer 11
-
€9,391 EUR
View
Most Expensive
NZ Jewellers
7c049642-ce40-4b7b-9fc2-ef4b83bc0466 · Nov 5
€11,641 EUR
$12,997 USD
View
Price under review
11 more retailers have this diamond
Prices start from €5,850 EURSave up to €3,541 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
€5,850 EUR