Heart|Natural|GIA

1.20ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 3415985694

Certificate GIA 3415985694

Diamond specifications and retailer prices

From $4,420 USD
As of November 4, 2026
Save $2,404 USD (35%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,884 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded G 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 3415985694. Listed at 19 retailers as of November 4, 2026, with a 54% 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
G
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3415985694
Dimensions5.88 × 5.67 × 4.12 mm
L/W Ratio1.04
Top View
5.88 mm5.67 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3415985694
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 72.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 4
Current: $8,884 USD|Low: $4,455 USD|High: $9,016 USD|Avg: $6,008 USD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8$4,455 USD
Retailer 11$4,556 USD
Retailer 12$4,676 USD
Retailer 4$4,759 USD
Retailer 10$5,067 USD
Retailer 6$5,371 USD
Retailer 2$5,426 USD
Retailer 3$5,601 USD
Retailer 5$6,294 USD
Retailer 7$6,824 USD
Retailer 9$8,058 USD
MOH London$8,884 USD

35 data points across 12 retailers

19 retailers$4,420 USD to $6,824 USD

B
Cheapest Retailer
-
$4,420 USD
B
Retailer 2
-
$4,455 USD
View
B
Retailer 3
-
$4,556 USD
View
B
Retailer 4
-
$4,676 USD
View
Final sale: no returns
B
Retailer 5
-
$4,759 USD
View
B
Retailer 6
-
$4,765 USD
View
B
Retailer 7
-
$5,018 USD
View
Retailer 8
-
$5,067 USD
View
Price last confirmed 8 days ago
B
Retailer 9
-
$5,371 USD
View
B
Retailer 10
-
$5,426 USD
View
B
Retailer 11
-
$5,460 USD
View
B
Retailer 12
-
$5,460 USD
View
Retailer 13
-
$5,601 USD
View
Price last confirmed 28 days ago
B
Retailer 14
-
$5,640 USD
View
Retailer 15
-
$6,171 USD
View
Price last confirmed 22 days ago
B
Retailer 16
-
$6,294 USD
View
B
Retailer 17
-
$6,824 USD
View
Retailer 18
-
$8,058 USD
View
Price last confirmed 9 days ago
Most Expensive
MOH London
8BE0C30AB · Nov 4
$8,884 USD
£6,995 GBP
View
Price under review
18 more retailers have this diamond
Prices start from $4,420 USDSave up to $2,404 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
$4,420 USD