Round|Natural|GIA

1.20ct H SI1 Round Natural Diamond

VG • H/SI1 • GIA 6432543536

Certificate GIA 6432543536

Diamond specifications and retailer prices

From $2,615 USD
As of October 31, 2026
Save $3,974 USD (60%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $6,589 USD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

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 SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 6432543536. Listed at 21 retailers as of October 31, 2026, with prices from $2,615 to $6,589, a $3,974 spread on the same certified stone. Diamond Quarter lists it at $6,589. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
H
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6432543536
Dimensions6.72 × 6.64 × 4.27 mm
L/W Ratio1.01
Top View
6.72 mm6.64 mm1.20 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6432543536
Side View
Table 55.0%Crown 36.5°Girdle: THN-THKPavilion 40.6°Culet: NoneDepth 64.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $3,675 USD|Low: $2,609 USD|High: $6,096 USD|Avg: $3,756 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8$2,615 USD
Retailer 9$2,649 USD
Retailer 11$3,198 USD
Retailer 10$3,324 USD
Retailer 1$3,675 USD
Retailer 4$3,704 USD
Retailer 3$3,740 USD
Retailer 7$3,818 USD
Retailer 2$3,857 USD
Retailer 5$4,396 USD
Retailer 6$6,007 USD

42 data points across 11 retailers

21 retailers$2,615 USD to $6,589 USD

A
Cheapest Retailer
-
$2,615 USD
A
Retailer 2
-
$2,649 USD
View
B+
Retailer 3
-
$3,128 USD
View
B+
Retailer 4
-
$3,198 USD
View
B+
Retailer 5
-
$3,324 USD
View
Final sale: no returns
Retailer 6
-
$3,403 USD
View
Price last confirmed 102 days ago
B
Retailer 7
-
$3,460 USD
View
B
Retailer 8
-
$3,602 USD
View
Retailer 9
-
$3,602 USD
View
Price last confirmed 8 days ago
B
Retailer 10
-
$3,675 USD
View
B
Retailer 11
-
$3,704 USD
View
B
Retailer 12
-
$3,740 USD
View
B
Retailer 13
-
$3,746 USD
View
B
Retailer 14
-
$3,812 USD
View
B
Retailer 15
-
$3,818 USD
View
Retailer 16
-
$3,857 USD
View
Price last confirmed 29 days ago
B
Retailer 17
-
$4,156 USD
View
B
Retailer 18
-
$4,396 USD
View
B
Retailer 19
-
$6,007 USD
View
C
Retailer 20
-
$6,275 USD
View
Most Expensive
C
Diamond Quarter
1.2SI1H64364817N · Nov 5
$6,589 USD
£5,188 GBP
View
20 more retailers have this diamond
Prices start from $2,615 USDSave up to $3,974 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
$2,615 USD