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Round|Natural|GIA

1.20ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 6512270726

Certificate GIA 6512270726

Diamond specifications and retailer prices

From €1,151 EUR
As of November 6, 2026
Save €1,107 EUR (49%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €3,752 EUR at NZ Jewellers · As of October 23, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6512270726. Listed at 10 retailers as of November 6, 2026, with a 96% 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
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6512270726
Dimensions6.74 × 6.78 × 4.24 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.74 mm6.78 mm1.20 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6512270726
Side View
Table 59.0%Crown 35°Girdle: THN-STKPavilion 41.4°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: €3,752 EUR|Low: €1,151 EUR|High: €5,578 EUR|Avg: €2,238 EUR|-5.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 4€1,151 EUR
Retailer 8€1,310 EUR
Retailer 10€1,418 EUR
Retailer 9€1,492 EUR
Retailer 5€1,507 EUR
Retailer 11€1,701 EUR
Retailer 7€1,911 EUR
Retailer 6€2,046 EUR
Retailer 2€2,259 EUR
NZ Jewellers€3,752 EUR
Retailer 3€5,578 EUR

24 data points across 11 retailers

10 retailers€1,151 EUR to €2,259 EUR

A
Cheapest Retailer
-
€1,151 EUR
A
Retailer 2
-
€1,310 EUR
View
Final sale: no returns
B+
Retailer 3
-
€1,418 EUR
View
B+
Retailer 4
-
€1,492 EUR
View
B+
Retailer 5
-
€1,507 EUR
View
B+
Retailer 6
-
€1,701 EUR
View
B
Retailer 7
-
€1,911 EUR
View
B
Retailer 8
-
€2,046 EUR
View
B
Retailer 9
-
€2,259 EUR
View
Most Expensive
NZ Jewellers
bf1a6de8-6107-4d12-ae9c-81a5341c0c73 · Oct 23
€3,752 EUR
$4,211 USD
View
Price last confirmed 14 days ago
9 more retailers have this diamond
Prices start from €1,151 EURSave up to €1,107 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.

A
1.20ct Round
€1,151 EUR