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Heart|Natural|GIA

1.20ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 6535629744

Certificate GIA 6535629744

Diamond specifications and retailer prices

From $4,178 NZD
As of November 6, 2026
Save $4,903 NZD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $10,790 NZD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6535629744. Listed at 15 retailers as of November 4, 2026, with a 117% 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6535629744
Dimensions6.49 × 7.38 × 4.32 mm
L/W Ratio1.14
Top View
6.49 mm7.38 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6535629744
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.5%

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 6
Current: $10,790 NZD|Low: $4,178 NZD|High: $10,836 NZD|Avg: $6,399 NZD|+2.5%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 10$4,178 NZD
Retailer 2$4,365 NZD
Retailer 8$4,937 NZD
Retailer 12$5,026 NZD
Retailer 3$5,533 NZD
Retailer 5$5,533 NZD
Retailer 11$5,702 NZD
Retailer 7$5,765 NZD
Retailer 6$5,823 NZD
Retailer 13$6,384 NZD
Retailer 9$9,081 NZD
Retailer 4$9,640 NZD
Queensmith$10,790 NZD

33 data points across 13 retailers

15 retailers$4,178 NZD to $9,081 NZD

A
Cheapest Retailer
-
$4,178 NZD
A
Retailer 2
-
$4,365 NZD
View
B+
Retailer 3
-
$4,937 NZD
View
B+
Retailer 4
-
$5,026 NZD
View
Final sale: no returns
B+
Retailer 5
-
$5,197 NZD
View
Retailer 6
-
$5,533 NZD
View
Price last confirmed 19 days ago
Retailer 7
-
$5,533 NZD
View
Price last confirmed 21 days ago
B+
Retailer 8
-
$5,702 NZD
View
Retailer 9
-
$5,745 NZD
View
Price last confirmed 21 days ago
B+
Retailer 10
-
$5,765 NZD
View
B+
Retailer 11
-
$5,823 NZD
View
Retailer 12
-
$6,384 NZD
View
Price last confirmed 18 days ago
B
Retailer 13
-
$9,081 NZD
View
Retailer 14
-
$9,640 NZD
View
Price last confirmed 19 days ago
Most Expensive
Queensmith
6535629744 · Oct 28
$10,790 NZD
£4,710 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from $4,178 NZDSave up to $4,903 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.

A
1.20ct Heart
$4,178 NZD