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Heart|Natural|GIA

1.21ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 5513714880

Certificate GIA 5513714880

Diamond specifications and retailer prices

From $3,830 NZD
As of November 6, 2026
Save $4,726 NZD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $10,142 NZD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 1.21ct natural heart diamond

This 1.21ct 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 5513714880. Listed at 15 retailers as of November 4, 2026, with a 123% 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

1.21
Carat
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5513714880
Dimensions7.41 × 6.28 × 4.48 mm
L/W Ratio1.18
Top View
7.41 mm6.28 mm1.21 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5513714880
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $10,142 NZD|Low: $3,381 NZD|High: $10,142 NZD|Avg: $5,630 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10$3,830 NZD
Retailer 9$4,057 NZD
Retailer 2$4,319 NZD
Retailer 6$4,394 NZD
Retailer 8$4,596 NZD
Retailer 3$4,815 NZD
Retailer 7$5,071 NZD
Retailer 4$6,081 NZD
Retailer 5$8,556 NZD
NZ Jewellers$10,142 NZD

39 data points across 10 retailers

15 retailers$3,830 NZD to $8,556 NZD

A
Cheapest Retailer
-
$3,830 NZD
A
Retailer 2
-
$3,988 NZD
View
A
Retailer 3
-
$4,057 NZD
View
Final sale: no returns
B+
Retailer 4
-
$4,319 NZD
View
Retailer 5
-
$4,394 NZD
View
Price last confirmed 16 days ago
Retailer 6
-
$4,596 NZD
View
Price last confirmed 16 days ago
B+
Retailer 7
-
$4,654 NZD
View
B+
Retailer 8
-
$4,815 NZD
View
Retailer 9
-
$5,071 NZD
View
Price last confirmed 15 days ago
B+
Retailer 10
-
$5,087 NZD
View
B+
Retailer 11
-
$5,087 NZD
View
B+
Retailer 12
-
$5,267 NZD
View
B+
Retailer 13
-
$6,081 NZD
View
B
Retailer 14
-
$8,556 NZD
View
Most Expensive
NZ Jewellers
ff0732ba-771a-4a5c-ba29-80f813082d9a · Oct 21
$10,142 NZD
$5,622 USD
View
Price last confirmed 17 days ago
14 more retailers have this diamond
Prices start from $3,830 NZDSave up to $4,726 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
1.21ct Heart
$3,830 NZD