CaratHunter
Plans
Heart|Natural|GIA

1.21ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 6157010233

Certificate GIA 6157010233

Diamond specifications and retailer prices

From $7,086 NZD
As of November 6, 2026
Save $8,713 NZD (55%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $15,799 NZD at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6157010233. Listed at 9 retailers as of November 5, 2026, with prices from $7,086 to $15,799, a $8,713 spread on the same certified stone. NZ Jewellers lists it at $15,799. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6157010233
Dimensions7.33 × 7.70 × 3.58 mm
L/W Ratio1.05
Top View
7.33 mm7.70 mm1.21 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6157010233
Side View
Table 58.0%CrownGirdle: MED-EXTPavilionCulet: NoneDepth 46.5%

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: $15,799 NZD|Low: $7,086 NZD|High: $15,799 NZD|Avg: $10,464 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5$7,086 NZD
Retailer 6$8,215 NZD
Retailer 7$8,215 NZD
Retailer 3$9,016 NZD
Retailer 8$9,479 NZD
Retailer 2$10,205 NZD
Retailer 4$14,444 NZD
NZ Jewellers$15,799 NZD

44 data points across 8 retailers

9 retailers$7,086 NZD to $15,799 NZD

B+
Cheapest Retailer
-
$7,086 NZD
B
Retailer 2
-
$8,215 NZD
View
B
Retailer 3
-
$8,215 NZD
View
B
Retailer 4
-
$9,016 NZD
View
B
Retailer 5
-
$9,479 NZD
View
B
Retailer 6
-
$10,205 NZD
View
B
Retailer 7
-
$13,255 NZD
View
B
Retailer 8
-
$14,444 NZD
View
Most Expensive
B
NZ Jewellers
4d776d7f-8c59-4e0a-82a6-bbebfabea9df · Nov 5
$15,799 NZD
$8,758 USD
View
8 more retailers have this diamond
Prices start from $7,086 NZDSave up to $8,713 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
$7,086 NZD