Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2526662059

Certificate GIA 2526662059

Diamond specifications and retailer prices

From $2,150 USD
HK$16,800 HKD
As of October 30, 2026
Save $2,734 USD (56%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $6,271 USD 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 127% 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 30
Current: $6,074 USD|Low: $2,150 USD|High: $6,074 USD|Avg: $3,256 USD
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
October 31, 2026
Retailer 3$2,150 USD
Retailer 17$2,481 USD
Retailer 8$2,601 USD
Retailer 13$2,640 USD
Retailer 7$2,680 USD
Retailer 15$2,681 USD
Retailer 14$2,840 USD
Retailer 6$2,905 USD
Retailer 9$3,010 USD
Retailer 4$3,047 USD
Retailer 2$3,088 USD
Retailer 16$3,255 USD
Retailer 5$3,352 USD
Retailer 10$3,401 USD
Retailer 12$3,538 USD
Retailer 11$4,884 USD
NZ Jewellers$6,074 USD

38 data points across 17 retailers

21 retailers$2,150 USD to $4,884 USD

A
Cheapest Retailer
-
$2,150 USD
HK$16,800 HKD
Retailer 2
-
$2,481 USD
View
Price last confirmed 12 days ago
B+
Retailer 3
-
$2,601 USD
View
B+
Retailer 4
-
$2,640 USD
View
B+
Retailer 5
-
$2,680 USD
View
B+
Retailer 6
-
$2,681 USD
View
Final sale: no returns
B+
Retailer 7
-
$2,840 USD
View
Retailer 8
-
$2,905 USD
View
Price last confirmed 15 days ago
Retailer 9
-
$2,905 USD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$3,010 USD
SGD 4,068 SGD
View
Retailer 11
-
$3,017 USD
View
Price last confirmed 15 days ago
B+
Retailer 12
-
$3,047 USD
View
B+
Retailer 13
-
$3,088 USD
£2,431 GBP
View
Retailer 14
-
$3,255 USD
A$5,008 AUD
View
Price last confirmed 23 days ago
Retailer 15
-
$3,352 USD
View
Price last confirmed 10 days ago
B
Retailer 16
-
$3,401 USD
€3,239 EUR
View
Retailer 17
-
$3,461 USD
View
Price last confirmed 39 days ago
B
Retailer 18
-
$3,538 USD
ZAR 57,152 ZAR
View
B
Retailer 19
-
$4,884 USD
£3,846 GBP
View
Retailer 20
-
$6,074 USD
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
df505308-ff89-4381-967b-67b853d5eaea · Sep 19
$6,271 USD
View
Price last confirmed 41 days ago
20 more retailers have this diamond
Prices start from $2,150 USDSave up to $2,734 USD

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
$2,150 USD