Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2526662059

Certificate GIA 2526662059

Diamond specifications and retailer prices

From $2,765 SGD
HK$16,900 HKD
As of November 1, 2026
Save $3,446 SGD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $8,017 SGD 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 November 1, 2026, with a 125% 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
Colour
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: Nov 1
Current: $7,765 SGD|Low: $2,749 SGD|High: $7,765 SGD|Avg: $4,154 SGD
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 13$2,765 SGD
Retailer 3$3,172 SGD
Retailer 8$3,325 SGD
Retailer 14$3,375 SGD
Retailer 7$3,426 SGD
Retailer 16$3,427 SGD
Retailer 15$3,631 SGD
Retailer 6$3,714 SGD
Retailer 9$3,848 SGD
Retailer 4$3,896 SGD
Retailer 11$3,947 SGD
Retailer 17$4,161 SGD
Retailer 5$4,285 SGD
Retailer 2$4,329 SGD
Retailer 12$4,565 SGD
Retailer 10$6,212 SGD
NZ Jewellers$7,765 SGD

37 data points across 17 retailers

21 retailers$2,765 SGD to $6,212 SGD

A
Cheapest Retailer
-
$2,765 SGD
HK$16,900 HKD
Retailer 2
-
$3,172 SGD
$2,481 USD
View
Price last confirmed 14 days ago
B+
Retailer 3
-
$3,325 SGD
$2,601 USD
View
Retailer 4
-
$3,375 SGD
$2,640 USD
View
B+
Retailer 5
-
$3,426 SGD
$2,680 USD
View
B+
Retailer 6
-
$3,427 SGD
$2,681 USD
View
Final sale: no returns
B+
Retailer 7
-
$3,631 SGD
$2,840 USD
View
Retailer 8
-
$3,714 SGD
$2,905 USD
View
Price last confirmed 16 days ago
Retailer 9
-
$3,714 SGD
$2,905 USD
View
Price last confirmed 10 days ago
B+
Retailer 10
-
$3,848 SGD
View
Retailer 11
-
$3,857 SGD
$3,017 USD
View
Price last confirmed 17 days ago
B+
Retailer 12
-
$3,896 SGD
$3,047 USD
View
B+
Retailer 13
-
$3,947 SGD
£2,431 GBP
View
Retailer 14
-
$4,161 SGD
A$5,008 AUD
View
Price last confirmed 24 days ago
Retailer 15
-
$4,285 SGD
$3,352 USD
View
Price last confirmed 11 days ago
B+
Retailer 16
-
$4,329 SGD
€3,225 EUR
View
Retailer 17
-
$4,425 SGD
$3,461 USD
View
Price last confirmed 40 days ago
B
Retailer 18
-
$4,565 SGD
ZAR 57,691 ZAR
View
B
Retailer 19
-
$6,212 SGD
£3,826 GBP
View
Retailer 20
-
$7,765 SGD
$6,074 USD
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
df505308-ff89-4381-967b-67b853d5eaea · Sep 19
$8,017 SGD
$6,271 USD
View
Price last confirmed 43 days ago
20 more retailers have this diamond
Prices start from $2,765 SGDSave up to $3,446 SGD

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
$2,765 SGD