Round|Natural|GIA

1.01ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2487928817

Certificate GIA 2487928817

Diamond specifications and retailer prices

From €1,237 EUR
HK$10,800 HKD
As of October 30, 2026
Save €1,699 EUR (58%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €4,317 EUR at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2487928817. Listed at 17 retailers as of October 30, 2026, with a 137% 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

1.01
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2487928817
Dimensions6.40 × 6.37 × 3.99 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.40 mm6.37 mm1.01 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2487928817
Side View
Table 59.0%Crown 34°Girdle: ThickPavilion 41.4°Culet: NoneDepth 62.5%

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: Oct 30
Current: €2,936 EUR|Low: €1,237 EUR|High: €3,139 EUR|Avg: €1,864 EUR|-6.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 12€1,237 EUR
Retailer 11€1,470 EUR
Retailer 9€1,527 EUR
Retailer 10€1,547 EUR
Retailer 7€1,623 EUR
Retailer 4€1,648 EUR
Retailer 2€1,729 EUR
Retailer 8€1,799 EUR
Retailer 5€1,827 EUR
Retailer 3€2,106 EUR
Retailer 6€2,289 EUR
Retailer 1€2,936 EUR

35 data points across 12 retailers

17 retailers€1,237 EUR to €2,936 EUR

A
Cheapest Retailer
-
€1,237 EUR
HK$10,800 HKD
A
Retailer 2
-
€1,470 EUR
$1,642 USD
View
B+
Retailer 3
-
€1,527 EUR
$1,706 USD
View
A
Retailer 4
-
€1,547 EUR
$1,728 USD
View
Final sale: no returns
B+
Retailer 5
-
€1,623 EUR
$1,813 USD
View
B+
Retailer 6
-
€1,729 EUR
SGD 2,610 SGD
View
Retailer 7
-
€1,770 EUR
$1,977 USD
View
Price last confirmed 24 days ago
Retailer 8
-
€1,770 EUR
$1,978 USD
View
Price last confirmed 24 days ago
B+
Retailer 9
-
€1,799 EUR
$2,010 USD
View
B+
Retailer 10
-
€1,827 EUR
£1,607 GBP
View
Retailer 11
-
€1,852 EUR
$2,069 USD
View
Price last confirmed 33 days ago
Retailer 12
-
€2,043 EUR
$2,282 USD
View
Price last confirmed 55 days ago
Retailer 13
-
€2,043 EUR
$2,282 USD
View
Price last confirmed 33 days ago
B+
Retailer 14
-
€2,289 EUR
View
B
Retailer 15
-
€2,936 EUR
£2,583 GBP
View
Retailer 16
-
€4,317 EUR
$4,823 USD
View
Price last confirmed 52 days ago
Most Expensive
NZ Jewellers
2105d1f5-fcce-43ff-8434-dd5e975e32f8 · Sep 28
€4,317 EUR
$4,823 USD
View
Price last confirmed 34 days ago
16 more retailers have this diamond
Prices start from €1,237 EURSave up to €1,699 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
1.01ct Round
€1,237 EUR