Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1529068672

Certificate GIA 1529068672

Diamond specifications and retailer prices

From $1,986 USD
As of October 28, 2026
Save $2,799 USD (58%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $5,778 USD 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 28, 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
Color
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 28
Current: $2,887 USD|Low: $1,986 USD|High: $5,516 USD|Avg: $2,943 USD|-0.2%
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
October 31, 2026
Retailer 7$1,986 USD
Retailer 16$2,048 USD
Retailer 9$2,100 USD
Retailer 13$2,182 USD
Retailer 4$2,224 USD
Retailer 2$2,270 USD
Retailer 18$2,272 USD
Retailer 6$2,580 USD
Retailer 14$2,586 USD
Retailer 3$2,830 USD
Retailer 19$2,830 USD
Retailer 1$2,887 USD
Retailer 5$2,920 USD
Retailer 11$3,097 USD
Retailer 12$3,186 USD
Retailer 8$3,191 USD
Retailer 15$3,324 USD
Retailer 10$3,356 USD
Retailer 17$4,785 USD

24 data points across 19 retailers

24 retailers$1,986 USD to $4,785 USD

A
Cheapest Retailer
-
$1,986 USD
A
Retailer 2
-
$2,048 USD
HK$16,000 HKD
View
Retailer 3
-
$2,100 USD
₹200,004 INR
View
Price last confirmed 15 days ago
A
Retailer 4
-
$2,182 USD
View
B+
Retailer 5
-
$2,224 USD
View
B+
Retailer 6
-
$2,270 USD
View
B+
Retailer 7
-
$2,272 USD
View
Final sale: no returns
B+
Retailer 8
-
$2,580 USD
View
B+
Retailer 9
-
$2,586 USD
£2,036 GBP
View
Retailer 10
-
$2,764 USD
View
Price last confirmed 23 days ago
Retailer 11
-
$2,764 USD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$2,830 USD
View
B
Retailer 13
-
$2,830 USD
View
Retailer 14
-
$2,863 USD
SGD 3,869 SGD
View
Price last confirmed 16 days ago
Retailer 15
-
$2,870 USD
View
Price last confirmed 15 days ago
B+
Retailer 16
-
$2,887 USD
£2,273 GBP
View
B
Retailer 17
-
$2,920 USD
View
Retailer 18
-
$3,097 USD
A$4,764 AUD
View
Price last confirmed 23 days ago
B+
Retailer 19
-
$3,186 USD
€3,034 EUR
View
Retailer 20
-
$3,189 USD
View
Price last confirmed 21 days ago
B
Retailer 21
-
$3,324 USD
View
Retailer 22
-
$3,356 USD
ZAR 54,222 ZAR
View
Price last confirmed 19 days ago
B
Retailer 23
-
$4,785 USD
£3,768 GBP
View
Most Expensive
NZ Jewellers
bf041d67-0ec4-4b79-bf90-36d06de6a248 · Oct 3
$5,778 USD
View
Price last confirmed 27 days ago
23 more retailers have this diamond
Prices start from $1,986 USDSave up to $2,799 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
$1,986 USD