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Heart|Natural|GIA

1.20ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 6305303260

Certificate GIA 6305303260

Diamond specifications and retailer prices

From $4,254 NZD
As of November 4, 2026
Save $4,935 NZD (54%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $9,189 NZD at MOH London · As of November 2, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6305303260. Listed at 4 retailers as of November 2, 2026, with prices from $4,254 to $9,189, a $4,935 spread on the same certified stone. MOH London lists it at $9,189. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6305303260
Dimensions6.08 × 7.31 × 4.32 mm
L/W Ratio1.20
Top View
6.08 mm7.31 mm1.20 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6305303260
Side View
Table 61.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 59.0%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $9,189 NZD|Low: $5,441 NZD|High: $9,301 NZD|Avg: $6,714 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 3$5,441 NZD
Retailer 2$5,735 NZD
Retailer 4$6,285 NZD
MOH London$9,189 NZD

37 data points across 4 retailers

4 retailers$4,254 NZD to $9,189 NZD

B+
Cheapest Retailer
-
$4,254 NZD
B
Retailer 2
-
$5,441 NZD
View
B
Retailer 3
-
$5,735 NZD
View
Most Expensive
B
MOH London
39260F071 · Nov 2
$9,189 NZD
£4,011 GBP
View
3 more retailers have this diamond
Prices start from $4,254 NZDSave up to $4,935 NZD

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
$4,254 NZD