CaratHunter
Plans
Heart|Natural|GIA

1.21ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 1545265538

Certificate GIA 1545265538

Diamond specifications and retailer prices

From $4,272 NZD
As of November 6, 2026
Save $5,083 NZD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $10,882 NZD at Queensmith · As of October 28, 2026
View at Queensmith

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 1545265538. Listed at 20 retailers as of November 4, 2026, with a 119% 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545265538
Dimensions7.33 × 6.74 × 4.30 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Cavity, Needle
Top View
7.33 mm6.74 mm1.21 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545265538
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.6%

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: $10,882 NZD|Low: $4,248 NZD|High: $10,916 NZD|Avg: $6,271 NZD|+2.3%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$4,272 NZD
Retailer 2$4,448 NZD
Retailer 7$5,035 NZD
Retailer 3$5,170 NZD
Retailer 11$5,177 NZD
Retailer 6$5,803 NZD
Retailer 10$5,868 NZD
Retailer 5$5,938 NZD
Retailer 4$6,532 NZD
Retailer 8$9,355 NZD
Queensmith$10,882 NZD

30 data points across 11 retailers

20 retailers$4,272 NZD to $9,355 NZD

A
Cheapest Retailer
-
$4,272 NZD
A
Retailer 2
-
$4,448 NZD
View
B+
Retailer 3
-
$5,035 NZD
View
B+
Retailer 4
-
$5,170 NZD
View
B+
Retailer 5
-
$5,177 NZD
View
Final sale: no returns
B+
Retailer 6
-
$5,300 NZD
View
Retailer 7
-
$5,641 NZD
View
Price last confirmed 19 days ago
Retailer 8
-
$5,641 NZD
View
Price last confirmed 21 days ago
Retailer 9
-
$5,671 NZD
View
Price last confirmed 45 days ago
B+
Retailer 10
-
$5,803 NZD
View
Retailer 11
-
$5,857 NZD
View
Price last confirmed 21 days ago
B+
Retailer 12
-
$5,868 NZD
View
B+
Retailer 13
-
$5,938 NZD
View
Retailer 14
-
$6,508 NZD
View
Price last confirmed 18 days ago
B+
Retailer 15
-
$6,532 NZD
View
Retailer 16
-
$6,545 NZD
View
Price last confirmed 45 days ago
B
Retailer 17
-
$9,355 NZD
View
Retailer 18
-
$9,828 NZD
View
Price last confirmed 19 days ago
Retailer 19
-
$9,882 NZD
View
Price last confirmed 47 days ago
Most Expensive
Queensmith
1545265538 · Oct 28
$10,882 NZD
£4,750 GBP
View
Price last confirmed 9 days ago
19 more retailers have this diamond
Prices start from $4,272 NZDSave up to $5,083 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
$4,272 NZD