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Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1529068672

Certificate GIA 1529068672

Diamond specifications and retailer prices

From $2,539 SGD
$1,986 USD
As of October 31, 2026
Save $3,579 SGD (58%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $7,387 SGD at NZ Jewellers · As of October 3, 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 1529068672. Listed at 24 retailers as of October 29, 2026, with a 141% 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 1529068672
Dimensions6.78 × 6.73 × 4.24 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Needle, Indented Natural, Natural
Top View
6.78 mm6.73 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1529068672
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.8%

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: $3,296 SGD|Low: $2,539 SGD|High: $7,052 SGD|Avg: $3,754 SGD|-1.5%
Retailer 1
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
Retailer 18
Retailer 19
November 1, 2026
Retailer 8$2,539 SGD
Retailer 15$2,635 SGD
Retailer 10$2,685 SGD
Retailer 13$2,841 SGD
Retailer 6$2,843 SGD
Retailer 4$2,902 SGD
Retailer 2$2,905 SGD
Retailer 16$3,126 SGD
Retailer 1$3,296 SGD
Retailer 3$3,618 SGD
Retailer 5$3,618 SGD
Retailer 12$3,690 SGD
Retailer 7$3,733 SGD
Retailer 11$3,959 SGD
Retailer 17$4,073 SGD
Retailer 9$4,080 SGD
Retailer 18$4,249 SGD
Retailer 14$4,269 SGD
Retailer 19$6,118 SGD

24 data points across 19 retailers

24 retailers$2,539 SGD to $6,118 SGD

A
Cheapest Retailer
-
$2,539 SGD
$1,986 USD
A
Retailer 2
-
$2,635 SGD
HK$16,100 HKD
View
Retailer 3
-
$2,685 SGD
₹200,004 INR
View
Price last confirmed 17 days ago
A
Retailer 4
-
$2,841 SGD
$2,222 USD
View
B+
Retailer 5
-
$2,843 SGD
$2,224 USD
View
B+
Retailer 6
-
$2,902 SGD
$2,270 USD
View
B+
Retailer 7
-
$2,905 SGD
$2,272 USD
View
Final sale: no returns
B+
Retailer 8
-
$3,126 SGD
$2,445 USD
View
B+
Retailer 9
-
$3,296 SGD
£2,030 GBP
View
Retailer 10
-
$3,533 SGD
$2,764 USD
View
Price last confirmed 24 days ago
Retailer 11
-
$3,533 SGD
$2,764 USD
View
Price last confirmed 16 days ago
B
Retailer 12
-
$3,618 SGD
$2,830 USD
View
B
Retailer 13
-
$3,618 SGD
$2,830 USD
View
Retailer 14
-
$3,660 SGD
View
Price last confirmed 17 days ago
Retailer 15
-
$3,669 SGD
$2,870 USD
View
Price last confirmed 17 days ago
B+
Retailer 16
-
$3,690 SGD
£2,273 GBP
View
B
Retailer 17
-
$3,733 SGD
$2,920 USD
View
Retailer 18
-
$3,959 SGD
A$4,764 AUD
View
Price last confirmed 24 days ago
B+
Retailer 19
-
$4,073 SGD
€3,034 EUR
View
Retailer 20
-
$4,077 SGD
$3,189 USD
View
Price last confirmed 23 days ago
B
Retailer 21
-
$4,249 SGD
$3,324 USD
View
B
Retailer 22
-
$4,269 SGD
ZAR 53,946 ZAR
View
B
Retailer 23
-
$6,118 SGD
£3,768 GBP
View
Most Expensive
NZ Jewellers
bf041d67-0ec4-4b79-bf90-36d06de6a248 · Oct 3
$7,387 SGD
$5,778 USD
View
Price last confirmed 29 days ago
23 more retailers have this diamond
Prices start from $2,539 SGDSave up to $3,579 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
$2,539 SGD