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Heart|Natural|GIA

1.21ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 5563084982

Certificate GIA 5563084982

Diamond specifications and retailer prices

From $3,985 NZD
As of November 5, 2026
Save $3,528 NZD (47%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $9,719 NZD at NZ Jewellers · As of September 30, 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 H 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 5563084982. Listed at 10 retailers as of November 5, 2026, with a 89% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle36.88°
OriginNatural
Grading LabGIA
CertificateGIA 5563084982
Dimensions6.70 × 7.27 × 4.17 mm
L/W Ratio1.09
Key to symbols
Twinning Wisp, Crystal, Needle
Top View
6.70 mm7.27 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5563084982
Side View
Table 61.0%CrownGirdle: THK-VTKPavilion 36.88°Culet: NoneDepth 57.3%

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: $7,513 NZD|Low: $3,822 NZD|High: $8,379 NZD|Avg: $5,584 NZD|-9.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 4$3,826 NZD
Retailer 6$3,985 NZD
Retailer 3$4,411 NZD
Retailer 5$5,096 NZD
Retailer 2$5,399 NZD
Retailer 7$6,572 NZD
Retailer 1$7,513 NZD

38 data points across 7 retailers

10 retailers$3,985 NZD to $7,513 NZD

Retailer 1
-
$3,826 NZD
Price last confirmed 3 days ago
A
Retailer 2
-
$3,985 NZD
View
B+
Retailer 3
-
$4,411 NZD
View
Retailer 4
-
$4,649 NZD
View
Price last confirmed 37 days ago
Retailer 5
-
$4,863 NZD
View
Price last confirmed 37 days ago
B+
Retailer 6
-
$5,096 NZD
View
B+
Retailer 7
-
$5,399 NZD
View
B
Retailer 8
-
$6,572 NZD
View
B
Retailer 9
-
$7,513 NZD
View
Most Expensive
NZ Jewellers
7dc53ffb-fc5a-4ad7-9fa2-10cac034a736 · Sep 30
$9,719 NZD
$5,388 USD
View
Price last confirmed 37 days ago
9 more retailers have this diamond
Prices start from $3,985 NZDSave up to $3,528 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
$3,985 NZD