Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2526662059

Certificate GIA 2526662059

Diamond specifications and retailer prices

From €1,936 EUR
HK$16,900 HKD
As of October 31, 2026
Save €2,436 EUR (56%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €5,613 EUR at NZ Jewellers · As of September 19, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2526662059. Listed at 21 retailers as of October 29, 2026, with a 126% 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
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2526662059
Dimensions6.78 × 6.74 × 4.24 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.78 mm6.74 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2526662059
Side View
Table 58.0%Crown 35°Girdle: STK-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: Oct 31
Current: €5,437 EUR|Low: €1,925 EUR|High: €5,437 EUR|Avg: €2,914 EUR
NZ Jewellers
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
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 11€1,936 EUR
Retailer 3€2,221 EUR
Retailer 8€2,328 EUR
Retailer 14€2,363 EUR
Retailer 7€2,399 EUR
Retailer 16€2,400 EUR
Retailer 15€2,542 EUR
Retailer 6€2,600 EUR
Retailer 9€2,695 EUR
Retailer 4€2,728 EUR
Retailer 2€2,764 EUR
Retailer 17€2,914 EUR
Retailer 5€3,000 EUR
Retailer 12€3,044 EUR
Retailer 10€3,196 EUR
Retailer 13€4,372 EUR
NZ Jewellers€5,437 EUR

38 data points across 17 retailers

21 retailers€1,936 EUR to €4,372 EUR

A
Cheapest Retailer
-
€1,936 EUR
HK$16,900 HKD
Retailer 2
-
€2,221 EUR
$2,481 USD
View
Price last confirmed 13 days ago
B+
Retailer 3
-
€2,328 EUR
$2,601 USD
View
B+
Retailer 4
-
€2,363 EUR
$2,640 USD
View
B+
Retailer 5
-
€2,399 EUR
$2,680 USD
View
B+
Retailer 6
-
€2,400 EUR
$2,681 USD
View
Final sale: no returns
B+
Retailer 7
-
€2,542 EUR
$2,840 USD
View
Retailer 8
-
€2,600 EUR
$2,905 USD
View
Price last confirmed 16 days ago
Retailer 9
-
€2,600 EUR
$2,905 USD
View
Price last confirmed 10 days ago
B+
Retailer 10
-
€2,695 EUR
SGD 4,068 SGD
View
Retailer 11
-
€2,700 EUR
$3,017 USD
View
Price last confirmed 16 days ago
B+
Retailer 12
-
€2,728 EUR
$3,047 USD
View
B+
Retailer 13
-
€2,764 EUR
£2,431 GBP
View
Retailer 14
-
€2,914 EUR
A$5,008 AUD
View
Price last confirmed 24 days ago
Retailer 15
-
€3,000 EUR
$3,352 USD
View
Price last confirmed 11 days ago
B
Retailer 16
-
€3,044 EUR
View
Retailer 17
-
€3,098 EUR
$3,461 USD
View
Price last confirmed 40 days ago
B
Retailer 18
-
€3,196 EUR
ZAR 57,691 ZAR
View
B
Retailer 19
-
€4,372 EUR
£3,846 GBP
View
Retailer 20
-
€5,437 EUR
$6,074 USD
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
df505308-ff89-4381-967b-67b853d5eaea · Sep 19
€5,613 EUR
$6,271 USD
View
Price last confirmed 42 days ago
20 more retailers have this diamond
Prices start from €1,936 EURSave up to €2,436 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
€1,936 EUR