CaratHunter
Plans
Heart|Natural|GIA

1.20ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 3535557448

Certificate GIA 3535557448

Diamond specifications and retailer prices

From $2,492 AUD
As of November 5, 2026
Save $495 AUD (17%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,986 AUD at Blue Nile · As of November 5, 2026
View at Blue Nile

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 3535557448. Listed at 4 retailers as of November 5, 2026, with prices from $2,492 to $2,986, a $495 spread on the same certified stone. Blue Nile lists it at $2,986. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3535557448
Dimensions6.57 × 7.35 × 4.33 mm
L/W Ratio1.12
Top View
6.57 mm7.35 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3535557448
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.8%

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: Nov 5
Current: $2,986 AUD|Low: $2,492 AUD|High: $3,716 AUD|Avg: $3,075 AUD|-19.6%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 7, 2026
Retailer 3$2,492 AUD
Retailer 2$2,685 AUD
Retailer 4$2,839 AUD
Blue Nile$2,986 AUD
Retailer 5$3,492 AUD

40 data points across 5 retailers

4 retailers$2,492 AUD to $2,986 AUD

A
Cheapest Retailer
-
$2,492 AUD
A
Retailer 2
-
$2,685 AUD
View
A
Retailer 3
-
$2,839 AUD
View
Most Expensive
B+
Blue Nile
26742561 · Nov 5
$2,986 AUD
$2,052 USD
View
3 more retailers have this diamond
Prices start from $2,492 AUDSave up to $495 AUD

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 Heart
$2,492 AUD