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Round|Natural|GIA

1.25ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6401599815

Certificate GIA 6401599815

Diamond specifications and retailer prices

From €2,128 EUR
£1,880 GBP
As of October 27, 2026
17 retailers carry this diamond
Most expensive: €4,265 EUR at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.25ct natural round diamond

This 1.25ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6401599815. Listed at 17 retailers as of October 27, 2026. 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

1.25
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6401599815
Dimensions6.86 × 6.83 × 4.32 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.86 mm6.83 mm1.25 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6401599815
Side View
Table 57.0%Crown 35°Girdle: ThickPavilion 41.4°Culet: NoneDepth 63.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: €2,128 EUR|Low: €1,660 EUR|High: €3,579 EUR|Avg: €2,124 EUR|-0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 27, 2026
Retailer 11€1,766 EUR
Retailer 2€1,772 EUR
Retailer 6€1,805 EUR
Retailer 9€1,812 EUR
Retailer 12€1,871 EUR
Retailer 8€1,963 EUR
Retailer 3€2,040 EUR
Retailer 10€2,087 EUR
Retailer 1€2,128 EUR
Retailer 4€2,336 EUR
Retailer 5€2,441 EUR
Retailer 7€3,443 EUR

14 data points across 12 retailers

17 retailers

Retailer 1
-
€1,766 EUR
$1,981 USD
Price last confirmed 7 days ago
Retailer 2
-
€1,772 EUR
$1,988 USD
View
Price last confirmed 7 days ago
Retailer 3
-
€1,805 EUR
$2,025 USD
View
Price last confirmed 8 days ago
Retailer 4
-
€1,871 EUR
$2,099 USD
View
Price last confirmed 7 days ago
Retailer 5
-
€1,963 EUR
$2,202 USD
View
Price last confirmed 8 days ago
Retailer 6
-
€1,963 EUR
$2,202 USD
View
Price last confirmed 25 days ago
Retailer 7
-
€1,963 EUR
$2,202 USD
View
Price last confirmed 21 days ago
Retailer 8
-
€2,053 EUR
$2,303 USD
View
Price last confirmed 8 days ago
Retailer 9
-
€2,087 EUR
$2,341 USD
View
Price last confirmed 8 days ago
A
Retailer 10
-
€2,128 EUR
£1,880 GBP
View
Retailer 11
-
€2,265 EUR
$2,540 USD
View
Price last confirmed 29 days ago
Retailer 12
-
€2,354 EUR
$2,640 USD
View
Price last confirmed 41 days ago
Retailer 13
-
€2,441 EUR
View
Price last confirmed 7 days ago
Retailer 14
-
€3,443 EUR
£3,041 GBP
View
Price last confirmed 7 days ago
Retailer 15
-
€4,104 EUR
$4,603 USD
View
Price last confirmed 30 days ago
Retailer 16
-
€4,104 EUR
$4,603 USD
View
Price last confirmed 22 days ago
Most Expensive
NZ Jewellers
e3228737-f0b4-43d0-9321-c885df49815f · Sep 19
€4,265 EUR
$4,784 USD
View
Price last confirmed 43 days ago
16 more retailers have this diamond
Prices start from €2,128 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
1.25ct Round
€2,128 EUR