Heart|Natural|GIA

1.20ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 1242037208

Certificate GIA 1242037208

Diamond specifications and retailer prices

From $2,469 USD
A$3,798 AUD
As of November 2, 2026
7 retailers carry this diamond
Most expensive: $4,536 USD at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1242037208. Listed at 7 retailers as of November 2, 2026. 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle39.03°
OriginNatural
Grading LabGIA
CertificateGIA 1242037208
Dimensions6.24 × 7.36 × 4.40 mm
L/W Ratio1.18
Key to symbols
Crystal, Feather
Top View
6.24 mm7.36 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1242037208
Side View
Table 60.0%CrownGirdle: MED-THKPavilion 39.03°Culet: NoneDepth 59.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $1,549 USD|Low: $1,549 USD|High: $4,094 USD|Avg: $2,596 USD|-14.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 22, 2026
Retailer 1$1,549 USD
Retailer 2$2,175 USD
Retailer 4$2,469 USD
Retailer 3$3,821 USD

13 data points across 4 retailers

7 retailers

Retailer 1
-
$1,549 USD
HK$12,100 HKD
Price last confirmed 9 days ago
Retailer 2
-
$2,170 USD
View
Price last confirmed 15 days ago
Retailer 3
-
$2,175 USD
SGD 2,939 SGD
View
Price last confirmed 11 days ago
Retailer 4
-
$2,270 USD
View
Price last confirmed 16 days ago
B+
Retailer 5
-
$2,469 USD
A$3,798 AUD
View
Retailer 6
-
$3,821 USD
£3,009 GBP
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
ee7a44fc-7e9a-4ff2-970e-c7c0f2c06a05 · Oct 18
$4,536 USD
View
Price last confirmed 15 days ago
6 more retailers have this diamond
Prices start from $2,469 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.

B+
1.20ct Heart
$2,469 USD