Round|Natural|GIA

1.21ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 3515861632

Certificate GIA 3515861632

Diamond specifications and retailer prices

From €3,808 EUR
As of November 5, 2026
Save €660 EUR (15%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €7,249 EUR at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3515861632. Listed at 19 retailers as of November 2, 2026, with a relatively tight 17% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 3515861632
Dimensions6.95 × 6.92 × 4.16 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
6.95 mm6.92 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3515861632
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.0%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: €4,468 EUR|Low: €3,317 EUR|High: €6,706 EUR|Avg: €4,278 EUR|-1.3%
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 2, 2026
Retailer 13€3,317 EUR
Retailer 14€3,368 EUR
Retailer 11€3,372 EUR
Retailer 8€3,583 EUR
Retailer 6€3,753 EUR
Retailer 2€3,808 EUR
Retailer 3€3,954 EUR
Retailer 9€4,026 EUR
Retailer 7€4,110 EUR
Retailer 5€4,193 EUR
Retailer 4€4,394 EUR
Retailer 1€4,468 EUR
Retailer 12€5,066 EUR
Retailer 10€6,662 EUR

36 data points across 14 retailers

19 retailers€3,808 EUR to €4,468 EUR

Retailer 1
-
€3,317 EUR
Price last confirmed 7 days ago
Retailer 2
-
€3,368 EUR
View
Price last confirmed 8 days ago
Retailer 3
-
€3,372 EUR
View
Price last confirmed 9 days ago
Retailer 4
-
€3,583 EUR
View
Price last confirmed 8 days ago
Retailer 5
-
€3,753 EUR
View
Price last confirmed 7 days ago
B+
Retailer 6
-
€3,808 EUR
View
B
Retailer 7
-
€3,954 EUR
View
Retailer 8
-
€4,026 EUR
View
Price last confirmed 8 days ago
Retailer 9
-
€4,110 EUR
View
Price last confirmed 7 days ago
Retailer 10
-
€4,160 EUR
View
Price last confirmed 19 days ago
Retailer 11
-
€4,160 EUR
View
Price last confirmed 21 days ago
Retailer 12
-
€4,160 EUR
View
Price last confirmed 22 days ago
Retailer 13
-
€4,193 EUR
View
Price last confirmed 28 days ago
B
Retailer 14
-
€4,394 EUR
View
B
Retailer 15
-
€4,468 EUR
View
Retailer 16
-
€4,801 EUR
View
Price last confirmed 19 days ago
Retailer 17
-
€5,066 EUR
View
Price last confirmed 10 days ago
Retailer 18
-
€6,662 EUR
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
cc76e0f9-6f19-4815-a1d1-7f9994dc5d3b · Oct 17
€7,249 EUR
$8,093 USD
View
Price last confirmed 20 days ago
18 more retailers have this diamond
Prices start from €3,808 EURSave up to €660 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 Round
€3,808 EUR