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Heart|Natural|GIA

1.21ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 2203906541

Certificate GIA 2203906541

Diamond specifications and retailer prices

From $6,465 NZD
As of November 6, 2026
Save $6,875 NZD (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $13,340 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2203906541. Listed at 19 retailers as of November 4, 2026, with prices from $6,465 to $13,340, a $6,875 spread on the same certified stone. MOH London lists it at $13,340. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2203906541
Dimensions6.42 × 5.69 × 3.79 mm
L/W Ratio1.13
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.42 mm5.69 mm1.21 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2203906541
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.6%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $13,340 NZD|Low: $5,522 NZD|High: $13,537 NZD|Avg: $8,421 NZD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10$6,465 NZD
Retailer 6$6,626 NZD
Retailer 5$6,694 NZD
Retailer 7$7,023 NZD
Retailer 9$7,609 NZD
Retailer 3$8,219 NZD
Retailer 8$8,466 NZD
Retailer 2$8,933 NZD
Retailer 4$10,246 NZD
MOH London$13,340 NZD

46 data points across 10 retailers

19 retailers$6,465 NZD to $13,340 NZD

B+
Cheapest Retailer
-
$6,465 NZD
B+
Retailer 2
-
$6,561 NZD
View
B+
Retailer 3
-
$6,626 NZD
View
B
Retailer 4
-
$6,694 NZD
View
B
Retailer 5
-
$6,709 NZD
View
B
Retailer 6
-
$7,023 NZD
View
Final sale: no returns
B
Retailer 7
-
$7,234 NZD
View
B
Retailer 8
-
$7,575 NZD
View
Retailer 9
-
$7,609 NZD
View
Price last confirmed 8 days ago
B
Retailer 10
-
$7,732 NZD
View
Retailer 11
-
$7,766 NZD
View
Price last confirmed 14 days ago
B
Retailer 12
-
$8,080 NZD
View
B
Retailer 13
-
$8,219 NZD
View
Retailer 14
-
$8,466 NZD
View
Price last confirmed 28 days ago
B
Retailer 15
-
$8,760 NZD
View
B
Retailer 16
-
$8,933 NZD
View
B
Retailer 17
-
$10,246 NZD
View
C
Retailer 18
-
$12,147 NZD
View
Most Expensive
B
MOH London
134D3AFB4 · Nov 4
$13,340 NZD
£5,823 GBP
View
18 more retailers have this diamond
Prices start from $6,465 NZDSave up to $6,875 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+
1.21ct Heart
$6,465 NZD