Round|Natural|GIA

1.25ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6401599815

Certificate GIA 6401599815

Diamond specifications and retailer prices

From €1,773 EUR
$1,981 USD
As of October 26, 2026
Save €1,684 EUR (49%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €4,282 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 26, 2026, with a 95% 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

1.25
Carat
J
Color
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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: €2,137 EUR|Low: €1,667 EUR|High: €3,593 EUR|Avg: €2,125 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€1,773 EUR
Retailer 2€1,779 EUR
Retailer 6€1,813 EUR
Retailer 9€1,819 EUR
Retailer 12€1,879 EUR
Retailer 8€1,971 EUR
Retailer 3€2,048 EUR
Retailer 10€2,095 EUR
Retailer 1€2,137 EUR
Retailer 4€2,345 EUR
Retailer 5€2,450 EUR
Retailer 7€3,457 EUR

15 data points across 12 retailers

17 retailers€1,773 EUR to €3,457 EUR

A
Cheapest Retailer
-
€1,773 EUR
$1,981 USD
A
Retailer 2
-
€1,779 EUR
$1,988 USD
View
A
Retailer 3
-
€1,813 EUR
$2,025 USD
View
A
Retailer 4
-
€1,879 EUR
$2,099 USD
View
A
Retailer 5
-
€1,971 EUR
$2,202 USD
View
Retailer 6
-
€1,971 EUR
$2,202 USD
View
Price last confirmed 24 days ago
Retailer 7
-
€1,971 EUR
$2,202 USD
View
Price last confirmed 20 days ago
A
Retailer 8
-
€2,061 EUR
$2,303 USD
View
A
Retailer 9
-
€2,095 EUR
$2,341 USD
View
A
Retailer 10
-
€2,137 EUR
£1,880 GBP
View
Retailer 11
-
€2,274 EUR
$2,540 USD
View
Price last confirmed 28 days ago
Retailer 12
-
€2,363 EUR
$2,640 USD
View
Price last confirmed 40 days ago
B+
Retailer 13
-
€2,450 EUR
View
B
Retailer 14
-
€3,457 EUR
£3,041 GBP
View
Retailer 15
-
€4,120 EUR
$4,603 USD
View
Price last confirmed 29 days ago
Retailer 16
-
€4,120 EUR
$4,603 USD
View
Price last confirmed 21 days ago
Most Expensive
NZ Jewellers
e3228737-f0b4-43d0-9321-c885df49815f · Sep 19
€4,282 EUR
$4,784 USD
View
Price last confirmed 42 days ago
16 more retailers have this diamond
Prices start from €1,773 EURSave up to €1,684 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
€1,773 EUR