Round|Natural|GIA

1.20ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1557783394

Certificate GIA 1557783394

Diamond specifications and retailer prices

From $2,252 USD
As of November 6, 2026
Save $2,725 USD (55%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,239 USD at NZ Jewellers · As of October 17, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1557783394. Listed at 20 retailers as of November 4, 2026, with a 121% 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
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1557783394
Dimensions6.81 × 6.88 × 4.12 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Knot, Feather, Crystal, Needle, Indented Natural
Top View
6.81 mm6.88 mm1.20 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1557783394
Side View
Table 61.0%Crown 33.5°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 60.1%

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 6
Current: $2,329 USD|Low: $2,252 USD|High: $5,937 USD|Avg: $3,444 USD|-3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9$2,252 USD
Retailer 1$2,329 USD
Retailer 2$2,754 USD
Retailer 3$2,777 USD
Retailer 7$2,817 USD
Retailer 4$3,125 USD
Retailer 5$3,140 USD
Retailer 6$3,467 USD
Retailer 8$4,977 USD
Retailer 10$5,918 USD

28 data points across 10 retailers

20 retailers$2,252 USD to $4,977 USD

A
Cheapest Retailer
-
$2,252 USD
A
Retailer 2
-
$2,329 USD
View
A
Retailer 3
-
$2,754 USD
View
Final sale: no returns
A
Retailer 4
-
$2,777 USD
View
B+
Retailer 5
-
$2,782 USD
View
A
Retailer 6
-
$2,817 USD
View
Retailer 7
-
$2,984 USD
View
Price last confirmed 39 days ago
Retailer 8
-
$2,984 USD
View
Price last confirmed 17 days ago
Retailer 9
-
$2,984 USD
View
Price last confirmed 21 days ago
B+
Retailer 10
-
$3,030 USD
View
Retailer 11
-
$3,099 USD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$3,125 USD
View
B+
Retailer 13
-
$3,126 USD
View
B+
Retailer 14
-
$3,140 USD
View
Retailer 15
-
$3,443 USD
View
Price last confirmed 38 days ago
B+
Retailer 16
-
$3,467 USD
View
B
Retailer 17
-
$4,977 USD
View
Retailer 18
-
$5,918 USD
View
Price last confirmed 9 days ago
Retailer 19
-
$6,239 USD
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
83cf3036-ce24-4aa2-af83-8270fb94ccc4 · Oct 17
$6,239 USD
View
Price last confirmed 20 days ago
19 more retailers have this diamond
Prices start from $2,252 USDSave up to $2,725 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
$2,252 USD